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A new species of Palaemonella, P. rubrolineata sp. nov., is described on the basis of material collected from pocilloporid corals in Indonesia and Vanuatu. The new species is most closely related to P. orientalis, another tropical Indo-West Pacific species usually found in association with pocilloporid and acroporid corals. The new species can be distinguished from P. orientalis based on the presence of a hepatic spine, the more slender rostrum, body and longer appendages, the pleura of the fifth abdominal segment having a posteroventral tooth, the absence of distal rows of long serrate setae on the fingers of the first pereiopods, and in having the cutting edges of the second chela as well as the joints of the pereiopods dark red colored.

A new species of the freshwater shrimp of the genus Macrobrachium irwini sp. nov., is described from the Nandhini River near Kateel, Karnataka region of Western Ghats, India. 11 specimens of Macrobrachium irwini sp. nov. were collected from Nandhini river running through a secondary forest with heavily vegetated banks. The morphological analyses revealed that the new species can be clearly distinguished from the closely related species, M. snpurii and M. scabriculum based on the shape and dentition on rostrum, antennular peduncle, segmental ratios of first pereiopod, tubercles along the cutting edges of immovable and movable fingers of second major pereiopod and telson. Additionally, we provided the striking colour patterns on the new species which could be distinguish this species from congeneric species.

Bahiacaris n. gen. http://zoobank.org/ urn:lsid:zoobank.org:act: 0B9F091B-F98E-49A7-B794-E250DB722900 Bahiacaris Schweitzer, Santana, Pinheiro & Feldmann, 2019: 72 [unavailable]. Diagnosis. Carapace high and short; rostrum about 30% total length of carapace, minutely serrate on upper margin. Scaphocerite not extending beyond rostrum. Pleonal somite 2 overlapping somites 1 and 3, variable in size. Telson sharp in lateral view, with apparent square tip in dorsal view; tip with setae; with 2 pairs of movable spines dorsally. Uropodal endopod and exopod narrow, much longer than wide; exopod inner margin weakly serrate, outer margin with setal pits. Third maxillipeds shorter than pereiopods 3–5. Pereiopods 1 and 2 shorter and with more bulbous articles than pereiopods 3–4. Type species. Atyoida roxoi Beurlen, 1950, by present designation. Type age. Lower Cretaceous (Aptian). Etymology. The genus name is derived from the state of Bahia in Brazil, where the specimen was collected, and ‘caris’, from the Greek for crab, a common stem in the group. Gender: feminine. Remarks. A full description and stratigraphic account of Bahiacaris n. gen. is given by Schweitzer et al. (2019).

Schweitzer, Carrie E., Santana, William, Pinheiro, Allysson, Feldmann, Rodney M. (2023): Validation of Bahiacaris Schweitzer, Santana, Pinheiro & Feldmann (Crustacea, Decapoda, Caridea) from the Cretaceous (Aptian) of Brazil. Zootaxa 5318 (2): 299-300, DOI: 10.11646/zootaxa.5318.2.13, URL: http://dx.doi.org/10.11646/zootaxa.5318.2.13

The ‘cleaning rock pool’ shrimp commonly inhabit the shallow waters of reef and crevices regions at 0.5-3.0 m depth. Recent exploration conducted off the Gulf of Mannar and Agatti Island yielded the species, Urocaridella antonbruunii (Bruce, 1967) from the bottom curve of the coral boulder at a depth of 0.5-1.0 m. This is the new record for the Gulf of Mannar and Lakshadweep waters. Major distinguishing morphological characters of the congener's were described and illustrated. The molecular analysis confirmed the species occurrence in Indian waters followed the intraspecific and interspecific genetic divergences (16S gene) were estimated between 0.3-2.1% for within species and 6.4-11.2% for between species respectively. Additionally, we updated and provided the illustrative key characters for all members of the genus Urocaridella.

Palaemonella jamila sp. nov. (Figs. 1–4) Type material. Holotype: male, pocl 4.2 mm, cl 7.4 mm, FLMNH UF 71319, Saudi Arabia, Makkah Province, Thuwal, King Abdullah University of Science and Technology (KAUST), near King Abdullah Monument, 22°20’26.2”N 39°05’15.1”E, shallow sand-rubble flat between small mangrove and deeper channel, in burrow of Alpheus sp., suction (yabby) pump, depth: 1 m, leg. A. Anker, A. Assayie & V. Peinemann, 10.01.2023 [fcn AA-22- 457]. Paratype (not deposited, specimen lost, see text): ovigerous female, pocl 4.4 mm, cl 7.8 mm, Saudi Arabia, Makkah Province, Thuwal, King Abdullah University of Science and Technology (KAUST), near King Abdullah Monument, 22°20’26.2”N 39°05’15.1”E, shallow sand-rubble flat between small mangrove and deeper channel, in burrow of Alpheus sp., suction (yabby) pump, depth: 0.5 m, leg. A. Anker, 24.09.2022 [fcn AA-22-177]. Description. Small-sized palaemonid shrimp. Body moderately slender, subcylindrical, not particularly compressed laterally, not flattened dorsoventrally.Carapace (Fig. 1A–C) smooth, slightly raised near middle of dorsal surface; orbit shallow; inferior orbital angle slightly produced anteriorly; postorbital area with distinct semicircular ridge; antennal tooth long, slender, sharp, submarginal, not reaching distal margin of antennal basicerite; hepatic tooth well developed, as long as antennal tooth, located slightly below it; anterolateral angle rounded, not produced. Rostrum (Fig. 1A–D) well developed, straight, almost horizontal, about 0.7 of remaining carapace length, with somewhat truncate tip, latter not reaching distal margin of antennal scaphocerite; dorsal margin of rostrum and postrostral carina with eight or nine large, anteriorly directed, acute teeth, four or five of them anterior to posterior orbital margin, one above posterior orbital margin and three posterior to posterior orbital margin, posterior-most tooth with small notch and somewhat separated from remaining teeth, anterior-most tooth smaller than remaining teeth (very small in holotype, located near rostral tip, more widely separated from following tooth); ventral margin of rostrum with single tooth at about 0.6 of rostral length and row of setae on proximal margin half. Pleon (Figs. 1E, 3B, 4B) typical for genus; third pleonite not humped or posteriorly produced; pleura of first to fourth pleonites rounded; fifth pleonite acutely produced posteroventrally; sixth pleonite almost twice as long as fifth pleonite (along mid-dorsal line), with sharply produced posterolateral angle and blunter posteroventral angle. Telson (Fig. 1F) 1.2 times as long as sixth pleonite, 2.3 times as long as anterior margin width, smoothly tapering posteriorly; dorsal surface with two pairs of long, stout, submarginal spiniform setae situated at about 0.4 and 0.7 of telson length, respectively; posterior margin 0.3 of anterior margin width, rounded, with three pairs of spiniform setae, lateral spiniform setae noticeably smaller than dorsal spiniform setae, intermediate spiniform setae robust, four times or so as long as lateral ones, submedian spiniform setae slenderest, about 0.6 length of intermediate ones, setulose. Eyestalks (Fig. 1A, B) with anteromesial margin convex, about as long as wide (exclusive of cornea); cornea noticeably reduced, narrower than eyestalk, hemispherical, with distinct accessory pigment spot dorsally; feebly pigmented. Antennule (Fig. 1A, B) robust; first article of antennular peduncle by far longest and widest, 1.7 times as long as wide, with stout, acute distolateral tooth; statocyst visible, rounded; stylocerite slender, with acute tip overreaching mid-length of first article; ventromesial tooth small, acute; second and third articles subequal in length, together about 0.6 length of dorsally visible portion of first article; flagella long, slender; dorsal (= lateral) flagellum biramous, proximal fused portion with seven or so subdivisions, shorter free ramus slender, with at least three almost indistinct subdivisions and several groups of aesthetascs. Antenna (Fig. 1A, B, G) typical for genus; basicerite moderately stout, with acute distolateral tooth; carpocerite subcylindrical, reaching to about 0.3 of scaphocerite length; flagellum moderately slender; scaphocerite extending well beyond antennular peduncle, 3.7 times as long as maximal width; blade relatively narrow, its distal margin rather short, broadly rounded; lateral margin almost straight, distolateral tooth significantly exceeding distal margin of blade. Epistome and labrum without specific features. Fourth thoracic sternite typical for genus, with strong, subacute, median process. Fifth thoracic sternite with two lateral lobes adjacent to second pereiopods, each lobe with acute triangular submedian process. Sixth to eight thoracic sternites unarmed. Mouthparts typical for genus, as illustrated (Fig. 1H–O). Mandible (Fig. 1H, I) with small, biarticulated palp; molar process stout, with several large angular teeth and small fields of minute setae; incisor process stout, with three large acute distal teeth. Maxillule (Fig. 1J) with coxal endite (proximal lacina) densely setose distally, some setae thicker, spiniform; basal endite (distal lacinia) slender, curved, furnished with row of simple and serrulate spiniform setae distally; endopod (palp) bilobed, ventral lobe descending, somewhat hook-shaped, both lobes apparently without setae (or setae broken). Maxilla (Fig. 1K) with coxal endite reduced, its distal margin straight, without setae; basal endite well developed, bilobed, both lobes distally fringed with long setae; endopod (palp) well developed, curved, tapering distally, entire; scaphognathite broadly rounded on both anterior and posterior margins. First maxilliped (Fig. 1L) with coxal endite broad, notched, moderately setose; basal endite broad, distally with rows of slender simple and serrulate setae; endopod (palp) simple, subdistally with one moderately long, plumose seta; exopod with long flagellum and well-developed, broad caridean lobe; epipod large, subtly bilobed, with truncate posterior margin. Second maxilliped (Fig. 1M, N) with endopod typical for genus; dactylus narrow, transversely widening; exopodal flagellum long; epipod with small podobranch consisting of two elongate lamellae. Third maxilliped (Fig. 1O) slender, pediform; coxa with large rounded epipod laterally; basis distinctly separated from endopod; antepenultimate article about five times as long as maximal width, somewhat twisted and flattened laterally, with setose ventral margin; penultimate article elongate, about 0.8 length of antepenultimate article, about six times as long as wide, setose ventrally; ultimate article 0.6 times as long as penultimate article, smoothly tapering distally, densely setose ventrally and less so dorsally; arthrobranch moderately developed, multilamellate. First pereiopods (Fig. 2A–C) slender, equal in size and similar in shape between left and right; ischium with deep constriction proximally, about four times as long as wide, with some long setae on ventral margin; merus about 1.5 times as long as ischium, slightly more than six times as long as wide; carpus 1.2 times as long as merus, widening distally; carpo-propodal grooming apparatus well developed; chela slender, somewhat more than half-length of carpus, with fingers subequal in length, 1.2 times as long as palm, with spaced tufts of short setae; fingertips curved, crossing; finger cutting edges straight, unarmed. Second pereiopods (Figs. 2D–G, 3, 4, following description based mainly on paratype) equal in size and similar in shape between left and right, slender, elongate; ischium slightly convex distodorsally, shallowly concave proximodorsally, about 4.5 times as long as wide; merus about 1.6 times as long as ischium, 6.5 times as long as wide, distomesial margin unarmed; carpus 1.5 times (paratype) to 1.2 times (holotype) as long as merus, distally widening, except for shallow subdistal constriction, distal margin with two bluntly rounded or angular lobes; chela 0.8 times as long as carpus (paratype) to subequal to carpus (holotype), palm feebly swollen, smooth; fingers subequal in length, 0.8 length of palm, smooth; fingertips curved and crossing distally; cutting margins of pollex and dactylus each with two low, subtriangular teeth proximally, each tooth fitting into space between teeth on opposed margin. Third pereiopod (Fig. 2H–J) slender, elongate; ischium slightly curved dorsally, about five times as long as wide; merus about 1.8 times as long as ischium, nine times as long as wide, unarmed; carpus 0.7 length of merus, unarmed; propodus 1.4 times as long as carpus, subequal to merus in length, ventral margin with four widely spaced, short, appressed, spiniform setae, in addition to distal pair of longer spiniform setae adjacent to dactylar base, mesial ones reaching 0.3 length of dactylus; dactylus about 0.3 length of propodus, gently curved, simple, smoothly concave ventrally. Fourth pereiopod (Fig. 2K) generally similar to third pereiopod, with somewhat longer propodus, latter armed with three spiniform setae on ventral margin and distal pair of spiniform setae adjacent to dactylar base; dactylus about 0.2 length of propodus, similar to that of third pereiopod. Fifth pereiopod (Fig. 2L–N) longer than third and fourth pereiopods, particularly in relative lengths of ischium and propodus; propodus without spiniform setae along ventral margin, however, with distal pair of spiniform setae adjacent to dactylar base, grooming brush composed of two rows of serrulate setae on ventrolateral-distal surface; dactylus about 0.2 length of propodus. Pleopods without specific features; male second pleopod with well-developed, slender appendix masculina bearing dense cluster of slender spiniform setae on apex and row of spiniform setae along lateral margin; appendix interna of about same size as appendix masculina, neither of them reaching distal margin of endopod. Uropod (Fig. 1P) extending well beyond telson; protopod robust, with its lateral lobe ending in subacute process; exopod with lateral margin straight, terminating in subacute distolateral tooth; adjacent distolateral spiniform seta well developed, reaching far beyond distolateral tooth, but not reaching distal margin of exopod; endopod slightly shorter than exopod, ovate. Ovigerous female (paratype) with about 30 eggs (with developing embryos), latter about same size as cornea, diameter about 0.45–0.50 mm. Colour pattern. Body largely translucent with pale yellow tinge; carapace and pleon with scattered, small, dull reddish spots; eyestalks with pale reddish spots and reddish longitudinal line dorsally, cornea pale goldengreen; antennules with some pale red-orange spots; first pereiopods with merus tinged with red distally and with small white distal spot; carpus mostly reddish, distally with broad, transverse, white band; chela with red tinge; red and white pattern of second pereiopods generally similar to that of first pereiopods, but with colours brighter and red- and white-coloured areas larger and more conspicuous; chela reddish with whitish patch proximally, connecting with white distal band on carpus; remaining appendages, i.e., antennae, third maxilliped, third to fifth pereiopods, pleopods and uropods, as well as telson, largely translucent with occasional reddish spots; ovigerous female (paratype) with pale greenish eggs (Figs. 3, 4). Etymology. The name of the new species is the Arabic word jamila meaning beautiful, pretty, elegant (also used as a female given name, Jamila), and alluding to the shrimp’s beauty and elegant appearance (Figs. 3, 4); used as a noun in apposition. Distribution. Presently known only from the type locality on the Saudi Arabian coast of the Red Sea. Ecology. The type locality of P. jamila sp. nov. is a shallow, relatively narrow sandflat (width about 50 m) located between some mangrove trees and deeper (4–5 m) channel, with bottom consisting of fine sand or sand mixed with small fragments of coral rubble, larger coral rocks, patches of seagrass and some algae. Both specimens were collected from burrows of goby-associated snapping shrimps, Alpheus spp., judging from the relatively large (about 2–4 cm wide), slightly oblique burrow entrance, typically fortified by smaller rocks or pieces of coral rubble. Although neither of the specimens of P. jamila sp. nov. was collected together with its host(s), the presence of at least four species of goby-associated snapping shrimps at the type locality was confirmed, either visually or by collected material, on other occasions (Anker, in prep.). These species are Alpheus rapax Fabricius, 1798, A. djeddensis Coutière, 1897, A. aff. djeddensis, and A. karplusi Anker, 2002 (cf. Anker 2022b). However, A. karplusi was observed only twice in somewhat deeper water (> 2 m), near the channel drop-off and large fossilised corals, whereas P. jamila sp. nov. was collected from burrows in fine sand adjacent to patches of seagrass, between 0.5 and 1 m. The two most common snapping shrimps at the type locality are A. rapax and A. djeddensis, and any or both of them could be hosts of P. jamila sp. nov. Remarks. Palaemonella jamila sp. nov. is one of four species of the genus characterised by the presence of a short, semicircular, postorbital ridge extending from the mesial margin of the orbit to the base of the antennal tooth, on each side of the carapace. The other species of Palaemonella displaying this feature are P. okunoi Komai & Yamada, 2015 from Japan, P. hachijo Okuno, 1999 from Japan and New Caledonia, and P. shirakawai Okuno, 2017 from Japan and South-East Asia, although in the last species, the postorbital ridge was described as “obsolete” (Okuno 1999, 2017; Komai & Yamada 2015). In the original description of P. aliska, Marin (2008) did not clearly illustrate nor mention the postorbital ridge in the type specimens of this species. However, the presence of a postorbital ridge was confirmed in the Saudi Arabian specimen of P. aliska reported below, suggesting a possible small inaccuracy in Marin’s (2008: fig. 2a–c) illustrations of the rostro-orbital region of the carapace. In the recent DNA-based phylogenetic analysis of Palaemonella and several related genera, Frolová et al. (2022) recovered both P. hachijo and P. okunoi within the same larger clade (Clade 3 in their fig. 2); however, these two species were not found to be particularly closely related. Therefore, the presence or absence of a postorbital ridge in Palaemonella may not necessarily be a phylogenetically informative character. On the other hand, P. jamila sp. nov. and P. aliska, which is also associated with burrows of Alpheus spp. (see below), do share the presence of a postorbital ridge, and may be indeed closely related. However, it must be noted that a less demarcated postorbital ridge may be observed in several other species of Palaemonella, including the common and widespread P. rotumana (Borradaile, 1898). Interestingly, the two burrow-associated palaemonid shrimps included in the phylogenetic analysis of Frolová et al. (2022), viz. P. aliska and Eupontonia nudirostris Marin, 2014, clustered together forming a small lineage within Clade 3. In their study, both Palaemonella and Eupontonia Bruce, 1971 were recovered as non-monophyletic, with four species of Vir Holthuis, 1952 and two species of Eupontonia nested within Palaemonella sensu lato. The necessary generic rearrangements and redefinitions in Clade 3 of Frolová et al. (2022) are obviously beyond the scope of the present study and herein Palaemonella is treated sensu Komai & Yamada (2015) and Fransen et al. (2022). Palaemonella jamila sp. nov. can be separated from P. hachijo and P. okunoi by the significantly smaller cornea, its diameter being smaller than that of the eyestalk, compared to the cornea being wider than and as wide as the eyestalk in P. hachijo and P. okunoi, respectively (cf. Fig. 1A, B; Okuno 1999: fig. 1A, B; Komai & Yamada 2015: fig. 2B, C). The new species also differs from P. hachijo in the distally unarmed merus of the second pereiopod (vs. armed with a sharp subdistal tooth in P. hachijo), and the much longer and stouter spiniform setae on the dorsal surface of the telson (cf. Figs. 1F, 2D, E; Okuno 1999: figs. 1E, 3C); and from P. okunoi in the presence of spiniform setae only in the distal part of the ventral margin of the fifth pereiopod propodus, adjacent to the dactylo-propodal articulation (vs. their presence along the entire ventral margin of the fifth pereiopod propodus in P. okunoi) (cf. Fig. 2L; Komai & Yamada 2015: fig. 4I). Palaemonella jamila sp. nov. can be easily distinguished from the presumably closely related P. aliska by the third pereiopod propodus ventrally armed with fewer spiniform setae (which are also smaller and more appressed); the noticeably slenderer dactylus of the third pereiopod; and the slenderer third maxilliped, especially its penultimate article (cf. Figs. 1A, B, O, 2H, I; Marin 2008: figs. 2a, c, 3h, 5a, b). The new species also differs from P. shirakawai in many aspects, for instance, in the proportions of the first article of the antennular peduncle; the shape of the scaphocerite; the shape and armature of the rostrum; the relative size of the cornea (compared to the eyestalk); the shorter and stouter first and second pereiopods; and the third pereiopod propodus with fewer, smaller and more appressed spiniform setae (cf. Figs. 1A, B, 2A, D, E, H, I; Okuno 2017: figs. 1A, B, 2C, 4A, C, F, G). In life, P. jamila sp. nov. can be easily separated from the four aforementioned species by its diagnostic colour pattern (cf. Figs. 3, 4; Okuno 1999: p. 743; Marin 2008: fig. 9a; Kuiter & Debelius 2009: p. 101 [colour photographs of P. shirakawai, as P. aliska]; Minemizu 2013: p. 42 [colour photograph of P. shirakawai, as P. aff. aliska]; Komai & Yamada 2015: fig. 1; Anker & De Grave 2019: fig. 4A, B; see also Fig. 5 in the present study). None of the remaining species of Palaemonella, i.e., all other species listed in the key of Komai & Yamada (2015) and the recently described P. rubrolineata Fransen, Van Der Veer & Frolová, 2022, seem to be closely related to P. jamila sp. nov. Some are deep-water species with little information available on their biology, whereas others are obligate associates of hard corals and crinoids, or are free-living, typically found within coral rock crevices or under coral rubble (e.g., Kemp 1922; Bruce 1991, 2002, 2008; Chace & Bruce 1993; Ďuriš 2017; Frolová et al. 2022; Fransen et al. 2022). Palaemonella jamila sp. nov. is the fourth species within the family Palaemonidae associated with burrows of larger hosts from three very different animal groups: (1) snapping shrimps (Alpheus sp.)— P. jamila sp. no, Published as part of Anker, Arthur & Benzoni, Francesca, 2023, Hidden in plain sight: two new species of decapod crustaceans (Palaemonidae and Porcellanidae) discovered in the Red Sea on a university campus in Saudi Arabia, pp. 78-102 in Zootaxa 5278 (1) on pages 79-87, DOI: 10.11646/zootaxa.5278.1.3, http://zenodo.org/record/7895072, {"references":["Fabricius, J. C. (1798) Supplementum Entomologiae Systematicae. Proft et Storch, Hafniae [Copenhagen], 572 pp.","Coutiere, H. (1897) Note sur quelques especes du genre Alpheus du Musee de Leyde. Notes from the Leyden Museum, 19, 195 - 207.","Anker, A. (2022 b) On two goby-associated snapping shrimps from the Red Sea, one of them new to science (Malacostraca: Decapoda: Alpheidae: Alpheus). Zootaxa, 5105 (3), 421 - 438. https: // doi. org / 10.11646 / zootaxa. 5105.3.5","Komai, T. & Yamada, Y. (2015) A new species of the palaemonid shrimp genus Palaemonella Dana, 1852 (Crustacea: Decapoda: Caridea) from Okinawa Island, Ryukyu Islands, Japan. Zootaxa, 3964 (3), 352 - 362. https: // doi. org / 10.11646 / zootaxa. 3964.3.4","Okuno, J. (1999) Palaemonella hachijo, a new species of shrimp (Crustacea: Decapoda: Palaemonidae) from a submarine cave in southern Japan. Proceedings of the Biological Society of Washington, 112, 739 - 745.","Okuno, J. (2017) Palaemonella shirakawai, a new species of shrimp (Crustacea: Decapoda: Palaemonidae), associated with burrow dwelling opistognathid fish from the Ryukyu Islands, Japan. Zootaxa, 4299 (4), 521 - 528. https: // doi. org / 10.11646 / zootaxa. 4299.4.3","Marin, I. (2008) Description of two new species from the genera Palaemonella Dana, 1852 and Vir Holthuis, 1952 (Crustacea: Caridea: Palaemonidae: Pontoniinae). 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Crustaceana, 20, 225 - 236. https: // doi. org / 10.1163 / 156854071 X 00012","Holthuis, L. B. (1952) The Decapoda of the Siboga Expedition. Part XI. The Palaemonidae collected by the Siboga and Snellius Expeditions with remarks on other species. II. Subfamily Pontoniinae. Siboga Expedition Monograph, 39 a 10, 1 - 254.","Fransen, C. H. J. M., Van Der Veer, E. & Frolova, P. (2022) A new species of scleractinian associated shrimp of the genus Palaemonella (Crustacea, Decapoda, Palaemonidae) with a redescription of Palaemonella orientalis Dana, 1852. Zootaxa, 5214 (4), 557 - 580. https: // doi. org / 10.11646 / zootaxa. 5214.4.5","Kuiter, R. & Debelius, H. (2009) World atlas of marine fauna. IKAN, Frankfurt, 725 pp.","Minemizu, R. (2013) Coral reef shrimps of Indo-West Pacific. Bun-ichi Sogo Shuppan, Tokyo, 144 pp. [in Japanese]","Anker, A. & De Grave, S. (2019) Further records of burrow-associated palaemonid shrimps (Decapoda: Palaemonidae). Zootaxa, 4612 (1), 145 - 150. https: // doi. org / 10.11646 / zootaxa. 4612.1.13","Kemp, S. (1922) Notes on Crustacea Decapoda in the Indian Museum. XV. Pontoniinae. Records of the Indian Museum, 24, 113 - 228. https: // doi. org / 10.26515 / rzsi / v 24 / i 2 / 1922 / 163464","Bruce, A. J. (1991) Shallow water palaemonoid shrimps from New Caledonia (Crustacea: Decapoda). In: Richer de Forges, B. (Ed.), Le Benthos des fonds meubles des lagons de Nouvelle-Caledonie, 1. Etudes et Theses. ORSTOM, Paris, pp. 221 - 279.","Bruce, A. J. (2002) Notes on some Indo-Pacific Pontoniinae, XLVI. Palaemonella foresti sp. nov., a new pontoniine shrimp from western Australia (Decapoda, Palaemonidae), with a review of the Indo-West Pacific species of the genus Palaemonella Dana, 1852. Crustaceana, 75, 277 - 298. https: // doi. org / 10.1163 / 156854002760095390","Bruce, A. J. (2008) A new species of Palaemonella Dana, 1852, (Crustacea: Decapoda; Pontoniinae) from the Red Sea. Zootaxa, 1844 (1), 63 - 68. https: // doi. org / 10.11646 / zootaxa. 1844.1.6","Chace, F. A. & Bruce, A. J. (1993) The caridean shrimps (Crustacea: Decapoda) of the Albatross Philippine Expedition 1907 - 1910, Part 6: Superfamily Palaemonoidea. Smithsonian Contributions to Zoology, 543, 1 - 152. https: // doi. org / 10.5479 / si. 00810282.543","Duris, Z. (2017) Palaemonid shrimps (Crustacea: Decapoda) of Saudi Arabia from the ' Red Sea Biodiversity Survey' 2011 - 2013, with 11 new records for the Red Sea. Marine Biodiversity, 47, 1147 - 1161. https: // doi. org / 10.1007 / s 12526 - 017 - 0681 - 8"]}

Two new symbiotic species of decapod crustaceans, a palaemonid shrimp and a porcellanid crab, are described from the same type locality situated on the campus of the King Abdullah University of Science and Technology (KAUST) in Thuwal, on the Red Sea coast of Saudi Arabia. The palaemonid shrimp Palaemonella jamila sp. nov. is described based on one male and one female, whereas the porcellanid crab Enosteoides habibi sp. nov. is described based on three males and two females. Unfortunately, the originally collected and studied specimens were lost shortly after study. However, subsequent recollection of one specimen of P. jamila sp. nov. and one specimen of E. habibi sp. nov. enabled to deposit a holotype of each new species in the collections of the Florida Museum of Natural History, Gainesville, USA. Both species inhabit burrows of goby-associated snapping shrimps, Alpheus spp., in the shallow subtidal areas, at depths less than 1 m. In addition, a single female specimen of Palaemonella aliska Marin, 2008 collected at Al Fahal reef off KAUST represents the first record of the species in the Red Sea and the Indian Ocean, and a considerable range extension of its previously known distribution range. This species may be a close relative of P. jamila sp. nov., to which it is also ecologically similar. The present study highlights the necessity of prospecting the largely neglected and still undersampled shallow subtidal habitats of the Red Sea, and the Indo-West Pacific in general.

Palaemonella aliska Marin, 2008 (Fig. 5) Palaemonella aliska Marin 2008: 376, figs. 1–5, 8a: Anker & De Grave 2019: 146, figs. 3, 4. For additional synonymy of P. aliska referring to P. shirakawai see Okuno (2017). Material examined. 1 female, pocl 3.4 mm, cl 5.5 mm, FLMNH UF 36078, Saudi Arabia, Makkah Province, Thuwal, southern end of Al Fahal reef, 22°13’21.7”N 38°58’03.7”E, exposed side of offshore reef, sand flat with abundant rubble, in burrow under large coral rock, depth: 1–3 m, leg. A. Anker et al., 19.03.2013 [fcn BDJRS-2974]. Distribution. Widely distributed in the Indo-West Pacific ranging from the Red Sea (present study) to Vietnam (Marin 2008), Solomon Islands and Great Barrier Reef, Australia (Anker & De Grave 2019). Ecology. The Saudi Arabian specimen was collected on a shallow reef flat (depth: 1–3 m) with abundance of coral rubble by flipping a large coral rock partly embedded in coarse sand; it was most likely dwelling inside a partly exposed burrow of a pair of goby-associated snapping shrimps (Alpheus sp.). In Vietnam, Australia and the Solomon Islands, P. aliska inhabits burrows of Alpheus sciolii Anker, 2022 (Anker & De Grave 2019; Anker 2022c). Remarks. The single specimen (non-ovigerous female) of P. aliska from Al Fahal reef off KAUST / Thuwal agrees very well with the detailed description of the species provided by Marin (2008), except for the presence of a distinct postorbital ridge, as mentioned above. The rostral formula of the Red Sea specimen is 6 / 2, with three teeth of the mid-dorsal carina situated posterior to the orbital margin (= postrostral teeth in Komai & Yamada 2015), thus falling within the range of variation reported by Marin (2008) and Anker & De Grave (2019). The colour pattern of P. aliska (Fig. 5; see also Marin 2008: fig. 9a; Anker & De Grave 2019: fig. 5A, B) is unique and therefore diagnostic, greatly facilitating identification of the species in the field. Noteworthy is that the Thuwal region of Saudi Arabia is currently the only locality in the world where three species of Palaemonella, viz. P. jamila sp. nov., P. aliska and another undescribed species of Palaemonella (Anker, in study) are found in association with burrowing snapping shrimps (Alpheus spp.)., Published as part of Anker, Arthur & Benzoni, Francesca, 2023, Hidden in plain sight: two new species of decapod crustaceans (Palaemonidae and Porcellanidae) discovered in the Red Sea on a university campus in Saudi Arabia, pp. 78-102 in Zootaxa 5278 (1) on pages 87-88, DOI: 10.11646/zootaxa.5278.1.3, http://zenodo.org/record/7895072, {"references":["Marin, I. (2008) Description of two new species from the genera Palaemonella Dana, 1852 and Vir Holthuis, 1952 (Crustacea: Caridea: Palaemonidae: Pontoniinae). Zoologische Mededelingen, Leiden, 82, 375 - 390.","Anker, A. & De Grave, S. (2019) Further records of burrow-associated palaemonid shrimps (Decapoda: Palaemonidae). Zootaxa, 4612 (1), 145 - 150. https: // doi. org / 10.11646 / zootaxa. 4612.1.13","Okuno, J. (2017) Palaemonella shirakawai, a new species of shrimp (Crustacea: Decapoda: Palaemonidae), associated with burrow dwelling opistognathid fish from the Ryukyu Islands, Japan. Zootaxa, 4299 (4), 521 - 528. https: // doi. org / 10.11646 / zootaxa. 4299.4.3","Anker, A. (2022 c) Description of two new species of goby-associated snapping shrimps from the tropical western Pacific (Decapoda: Alpheidae: Alpheus). Zootaxa, 5092 (3), 273 - 290. https: // doi. org / 10.11646 / zootaxa. 5092.3.2","Komai, T. & Yamada, Y. (2015) A new species of the palaemonid shrimp genus Palaemonella Dana, 1852 (Crustacea: Decapoda: Caridea) from Okinawa Island, Ryukyu Islands, Japan. Zootaxa, 3964 (3), 352 - 362. https: // doi. org / 10.11646 / zootaxa. 3964.3.4"]}

Somalis n. gen. Type species: Somalis piauiensis n. gen. n. sp. By the present designation. Etymology: This genus is dedicated to the paleontologist Maria Somália Sales Viana, in recognition of her extensive contributions to the studies of geology and paleontology of the Araripe Basin, as well as Brazilian fossils. Gender feminine. Diagnosis: Carapace with antennal and branchiostegal spines. Long rostrum, with thirteen evident dorsal spines yielding a serrate appearance. Laminar scaphocerite large, lateral margin weakly rounded, longer than rostrum. Pleura of second pleonal somite overlapping the third but not the first. First and second pleonal somites approximately the same size, the third slightly larger, and the fourth and fifth approximately the same size. Sixth somite elongated and approximately twice the length of the previous somites. Telson smaller than uropods, with the lateral margin weakly rounded., Published as part of Barros, Olga Alcântara & Oliveira, Paulo Victor De, 2023, New Dendrobranchiata fossil preserved in the Brazilian Cretaceous (Aptian / Albian) from the Araripe Basin, Piauí State, pp. 545-563 in Zootaxa 5264 (4) on pages 549-550, DOI: 10.11646/zootaxa.5264.4.5, http://zenodo.org/record/7837105

The fossil shrimp Somalis piauiensis n. gen. n. sp. is a new fossil record of Penaeoidea from the Araripe Basin. The purpose of this study is to describe a new decapod crustacean from the Romualdo Formation of the Santana Group and compare it with other fossil Dendrobranchiata described from this basin. The new fossil is characterized by a carapace with antennal and branchiostegal spines. Long rostrum, with thirteen evident dorsal spines yielding a serrate appearance. The laminar scaphocerite is large with a weakly rounded lateral margin and is longer than the rostrum. The fossil specimen is the first occurrence of shrimp in the Piauí territory.

Somalis piauiensis n. sp. (Figures 5–14) Type material: LPP CR 001p (part), and LPP CR 001cp (counterpart), holotype. Type locality: municipality of Caldeirão Grande do Piauí, Piauí State. Stratigraphic unit: Romualdo Formation, Santana Group, Araripe Basin. Age: Early Cretaceous-Albian Etymology: The specific epithet was derived from the locality where the material was collected. It derives from the state of Piauí, northeast Brazil, and this choice was due to this being the first record of fossil shrimp occurrence in this region of the Araripe Basin. Diagnosis: The same as for the genus. Description: Fossil preserved in lateral view. Small Penaeoidea with a total length of approximately 15 mm (rostrum to telson). Carapace laterally compressed; antennal and branchiostegal spines present. Long rostrum, with thirteen evident dorsal spines yielding a serrate appearance. Moderately preserved corneas with light pigmentation, wider than eyestalk.Antennal protopodite preserved, antennule incompletely preserved. Laminar scaphocerite large, lateral margin weakly rounded, longer than rostrum. Third maxillipeds not preserved. Second part of the pereiopods scarcely preserved and with a chelate appearance, pleopods on the second somite poorly laterally preserved, the third to fifth not preserved. Pleon laterally compressed, six-segmented, all somites without spines. Pleura of the second pleonal somite overlapping with the third but not the first; the first and second somites approximately the same size, the third slightly larger, and the fourth and fifth somites approximately the same size; the sixth somite elongated and approximately twice the length of the previous somites. Telson smaller than uropods, the lateral margin weakly rounded., Published as part of Barros, Olga Alcântara & Oliveira, Paulo Victor De, 2023, New Dendrobranchiata fossil preserved in the Brazilian Cretaceous (Aptian / Albian) from the Araripe Basin, Piauí State, pp. 545-563 in Zootaxa 5264 (4) on pages 550-551, DOI: 10.11646/zootaxa.5264.4.5, http://zenodo.org/record/7837105

The palaemonid shrimp Periclimenaeus rastrifer is here reported from Taiwan based on three specimens. It bears a feeble but distinct anterodorsal lobe on the first pleonite (not reported before). The mouthparts, not previously described, are also remarkable by a multidentate apex of the mandibular incisor, asymmetric distal endite of the second maxilla, and expanded dorsal lobe on the second maxilliped merus. The species is thus redescribed here. One of the examined specimens possesses an unusual rostrum, and malformed telson and uropodal spinulation; the latter specimen is described and illustrated in detail, including the mouthparts. Previously, the only species in the genus published in faunistic repors from Taiwan were P. wolffi Bruce 1993 and P. gorgonidarum (Balss, 1913) recorded from the Taiwan Strait, and the Green Island, respectively; P. rastrifer is reported here as the first of the genus from Taiwan mainland

A new species of bivalve mollusk dwelling palaemonid shrimp of the genus Odontonia is described from the Berau Islands, East Kalimantan, Indonesia. This is the only Odontonia species recorded as a symbiont of a bivalve mollusk, all other congeners are known to associate with solitary ascidians. The new species belongs to the group wherein the dactylus of the ambulatory pereiopods has an accessory tooth. It differs from these species in the absence of a forward directed proximal tooth on the flexor margin of the corpus of the ambulatory dactyli. It also lacks the small denticles posterior to the distoventral accessory tooth on the dactylar corpus.

Palaemonella orientalis Dana, 1852 (Figs. 9–16) Palaemonella orientalis Dana, 1852a: 26; Dana, 1852b: 583; Weitenweber, 1854: 60; Dana, 1855 (atlas): 12, pl. 38 fig. 4;? De Man, 1888: 552; Borradaile, 1917: 358 (listed); Kemp, 1922: 131–134, figs. 9–11; Edmondson, 1925: 8;? Edmondson, 1933: 212, fig. 124c;? Edmondson, 1946: 252, fig. 152c. Vir orientalis — Holthuis, 1952: 8, 30 (full synonymy); Holthuis, 1953: 55; Holthuis, 1955: 57, fig. 31b (listed); Cloud, 1959: 436 (listed); Bruce, 1972a: 65, fig. 1; Bruce, 1972b: 403–405; Hipeau-Jacquotte, 1972: 8 (listed); Bruce, 1976a: 5; Bruce, 1976b: 95, 144; Bruce, 1976c: 485; Bruce, 1977: 2 (listed); Bruce, 1979: 218; Bruce, 1981: 79; Bruce, 1984: 144; Bruce, 1990: 13, 17, 19 (listed); Chace & Bruce, 1993: 64, 131–132; Fransen, 1994: 141 (in part, only RMNH.CRUS.D.42991); De Grave, 2000: 144; Hayashi, 2001: 62, fig. 406a–d; Bruce, 2003: 246 (listed); Fransen & Holthuis, 2007: 101 (listed); Li et al., 2007: 305, fig. 157 (listed). non Palaemonella orientalis — Spence Bate, 1888: 787, pl. 128 fig. 4; Estampador, 1937: 48. (= Periclimenes batei (Borradaile, 1917)). non Palaemonella orientalis — Rathbun, 1906: 925. (= Brachycarpus biunguiculatus (H. Lucas, 1846)). Material examined. MNHN-IU-2022-2001: 2 males, pocl. 2.0 and 2.2mm; 1 damaged specimen, pocl. 1.9mm; stn FR18, Vanuatu, Santo, NW Tutuba Island, 15°19′47.892″S, 167°10′1.128″E, 18.ix.2006, depth unknown, steep reef slope, collected by C.H.J.M. Fransen, GenBank accession no. OP326600 (16S). RMNH. CRUS.D.58034: 1 ovigerous female, pocl. 2.3mm: stn MAL.19.068. Maldives, N Nilandhe Atoll, Magoodhoo Island, lagoon in front of station, 3°4′51.92″N, 72°57′57.74″E, 15.v.2014, depth 0–2 m, among Pocillopora spec. and Acropora spec., collected by C.H.J.M. Fransen, GenBank accession no. OP326601 (16S). RMNH. CRUS.D.58035: 1 ovigerous female pocl. 1.9mm: stn LEM.25, Indonesia, NE Sulawesi, Lembeh Strait, N Pulau Dua, 1°23′28.6434″N, 125°12′58.7154″E, 13.ii.2012, depth 11 m, on Acropora spec., collected by Zoi Farenzena, GenBank accession no. OP326602 (16S). RMNH. CRUS.D.42888: 1 juvenile pocl. 1.50mm; NIOP-E, stn. SEY.603, Mahé, SE coat, just S of Pointe au Sel and Ile Souris, 04°44′S 55°32Έ, depth 1 m, sandy reef flat with isolated granitic rock and intertidal beachrock, snorkeling, between branches of Pocillopora damicornis (Linnaeus, 1758), 7.xii.1992, collected by C.H.J.M. Fransen. Stn. SEM.18, Malaysia, Semporna, Ligitan Isl., Ligitan 4, 04°14′06.5″N 118°48′26.5″E, 4.xii.2010, depth unknown, on Acropora spec., not collected, photograph by C.H.J.M. Fransen. Description. Small shrimp of subcylindrical body form. Carapace smooth. Rostrum (Fig. 9A–C) well developed, straight, horizontal, reaching distal margin of scaphocerite, with 6–9 acute dorsal teeth on rostrum proper, sometimes proximalmost tooth postorbital; ventral margin with single row of short setae, with 1–2 acute teeth at level of distal margin of ultimate segment of antennular peduncle. Orbit obsolescent (Fig. 9A–C); inferior orbital angle slightly produced; antennal spine long, slender, acute and marginal, reaching distal margin of basicerite; hepatic spine absent; anterolateral angle of carapace rounded, not produced. Abdomen (Fig. 9D, 16A) normal, third tergite not produced, sixth segment (Fig. 9D) about 1.5 times length of fifth, 1.1 times longer than deep, with posterolateral and posteroventral angles bluntly produced; pleura of first five segments enlarged, broadly rounded (Fig. 9D). Telson (Fig. 9E) about 1.6 times longer than sixth abdominal segment, 2.2 times longer than proximal width, lateral margins convergent, sublinear, with two pairs of small subequal dorsal spines at about 0.51 and 0.74 of telson length, distal margin (Fig. 9F) 0.29 of proximal margin width, rounded, without median process, lateral spines small, similar to dorsal spines, intermediate spines robust, 4.5 times as long as lateral spines, submedian spines almost half length of intermediate spines, setulose. Eye (Fig. 9A) with whitish globular cornea with red lines, with distinct accessory pigment spot dorsally; cornea almost as wide as maximum width of eyestalk; eyestalk 1.1 times longer than maximum width. Antennula (Fig. 10A) normal; basal segment of antennular peduncle about half as long as scaphocerite, with acute ventromedial tooth, distal margin convex, with plumose setae, distolateral tooth reaching halfway intermediate segment, lateral margin slightly convex, medial margin straight with row of plumose setae, statocyst normal; stylocerite slender, acute, reaching to half segment length; intermediate and distal segments subequal in length, together about 0.5 of basal segment length; flagella long, slender, upper flagellum biramous, proximal 6 segments fused, shorter free ramus with 3 segments, with 12 groups of aesthetascs, longer free ramus slender. Antenna (Fig. 10B) normal; basicerite without distolateral spine; ischiocerite and merocerite normal; carpocerite subcylindrical, reaching to about 0.25 of scaphocerite length; flagellum well developed; scaphocerite extending well beyond antennular peduncle, 3 times longer than maximum width, distal margin rather small, broadly rounded, lateral margin concave with acute distolateral tooth exceeding distal margin of lamina. Epistome and labrum normal. Fourth thoracic sternite (Fig. 9G) with strong, broad, blunt, median process. Fifth thoracic sternite (Fig. 9G) with shallow lateral plates posteromedial of second pereiopods with triangular submedian processes. Sixth to eight thoracic sternites unarmed, increasing in width posteriorly. Mandible (Fig. 11A–C) robust, with small one- or two-segmented palp with few small simple setae; molar process stout with large angular teeth and brushes of stout setae; incisor process also stout with three large acute distal teeth. Maxillula (Fig. 11D) with upper lacinia slender, with two rows of robust simple and serrulate spines medially; lower lacinia slender, setose distally; palp distinctly bilobed, upper lobe with single small simple seta, lower lobe with a small, ventral, single, short, recurved seta. Maxilla (Fig. 11E) with basal endite well developed, entire, not bilobed, fringed medially by many long simple and serrulate setae; coxal endite obsolete, median margin straight, without setae; scaphognathite about twice as long as proximal width; palp well developed, basally broad, tapering distally, indistinctly two-segmented, with few plumose setae on lateral border. First maxilliped (Fig. 12A) with basal and coxal endites distinct; basal endite broad, anterolateral border sparsely setose, medial margin straight, with numerous slender simple and serrulate setae; coxal endite medially straight, sparsely setose; exopod well developed, flagellum with about 6 plumose setae distally, caridean lobe small, narrow; coxa with very large bilobed exopod, anterior lobe slightly larger than posterior lobe; palp tapering distally with one large plumose seta subdistally on medial border. Second maxilliped (Fig. 12B) with endopod normally developed; with dactylar segment narrow, 4 times longer than broad, densely fringed with numerous coarsely serrulate, spiniform, and long curled, finely serrulate setae medially; distomedial lobe of propodal segment rounded, with row of long slender simple and serrulate setae, ventrolateral margin devoid of setae; carpal segment distomedially angular, without setae, unarmed; meral segment medially excavate, without setae; basal and ischial segments fused, both segments medially excavate, with few short setae medially; exopod normal, with long plumose setae distally; coxal segment slightly produced medially, with few long setae; epipod small, simple, subrectangular, without podobranch. Third maxilliped (Fig. 12C) with endopod slender, reaching with terminal segment beyond carpocerite; ischiomerus and basis distinct, ischiomerus 6 times longer than wide, flattened and twisted, setose medially, otherwise glabrous, with 2 robust spines in distal part; carpal segment 4.5 times longer than wide, 0.72 of ischiomeral length, subcylindrical, with groups of long serrulate setae medially; terminal segment 0.52 of ischiomeral segment, tapering distally with terminal spine, medial margin with groups of short serrulate setae; basis with few simple setae along slightly convex median margin; exopod well developed, reaching distal margin of ischiomerus, with numerous plumose setae distally; coxa with small medial lobe and rounded epipod laterally. First pereiopods (Fig. 13A) slender, exceeding carpocerite with distal part merus, carpus and chela; chela normal, slightly compressed, palm about twice as long as deep, with several rows of cleaning setae proximoventrally, fingers about as long as palm, slender, tapering, both with brushes of simple setae and hooked tip distally, cutting edges simple, entire; carpus 1.3 times chela length, slender, 6 times longer than distal width, tapering slightly proximally, with several cleaning setae distoventrally; merus about as long as carpus, about 7 times longer than wide; ischium and basis with several long simple setae medially; coxa with small setose ventromedial lobe. Second pereiopods (Fig. 13B) equal and similar; chela (Fig. 13C) about 1.6 times carapace length, palm smooth about 3.3 times longer than deep, slightly swollen proximally, fingers (Fig. 13D) 0.7 times palm length, slender, dactylus about 5.5 times longer than proximal depth, dorsal margin slightly convex, tip hooked, acute, cutting edge with 2 teeth in proximal half, distal cutting edge entire; fixed finger similar, with 1 large tooth at level between two dactylar teeth and 3–4 small teeth proximally; carpus about 0.4 of chela length, about 5 times longer than distal width, tapering proximally, constricted then flared distally with blunt angular dorsal lobe; merus slightly longer than carpus, 4.3 times longer than central width, armed with distomesial tooth; ischium about 0.75 length of merus, tapering proximally; basis and coxa without special features. Third pereiopods (Fig. 14A) short, rather robust, exceeding carpocerite by carpus, propodus and dactylus; dactylus (Fig. 14B) simple, curved, 0.19 of propodus length, 1.7 times longer than proximal depth, corpus 1.1 times longer than proximal width, distal width 0.28 times proximal width, dorsal margin convex, with 3–4 simple setae at about 0.65 of length, ventral margin proximally slightly convex, distally concave, without accessory tooth, without setae; unguis indistinctly demarcated, 0.70 of corpus length, simple, curved, distally acute; propodus almost 7 times longer than wide, slightly compressed, slightly bowed, uniform, with many long slender setae distally, without spines; carpus normal, 0.43 times propodus length, unarmed; merus as long as propodus, 6.4 times longer than wide, uniform, unarmed; ischium, basis and coxa without special features. Fourth pereiopods (Fig. 14C, D) similar to third. Fifth pereiopods (Fig. 15A, B) similar to third and fourth. Uropods (Fig. 9E) extending beyond telson; protopodite robust, unarmed; exopod with lateral margin straight, non-setose, with small acute posterolateral tooth, slightly bending inward, flanked medially by mobile spine twice as long as posterolaterlal tooth; endopod slightly shorter than exopod. Pleopods with endopods shorter than exopods. Ova about 50, size 0.45mm. First pleopod of female (Fig. 15C) with endopod less than half as long as exopod, with many long plumose setae medially and distally. Male endopod of first pleopod (Fig. 15D) half as long as exopod, about 3.5 times longer than wide, with median margin concave, distally slightly expanded, with relatively short plumose marginal setae. Endopod of second pleopod (Fig. 15E) 0.8 times length of exopod; appendix masculina well developed, with several rows of strong serrulate setae, about as long as appendix interna. Size. Maximal pocl. in males 2.2mm, in ovigerous females 2.3mm. Coloration (Fig. 16). Body translucent with white and orange chromatophores. Appendages translucent with white chromatophores at joints. Eyestalks with orange and white longitudinal lines of chromatophores anteriorly. Eyes whitish with red lines and black spot dorsally. White spots at base of uropods. Host. Scleractinia: Pocilloporidae: Pocillopora damicornis (Linnaeus, 1758) (Bruce, 1972a, b; 1976c; 1981; Fransen, 1994); Pocillopora verrucosa (Ellis & Solander, 1786) (Bruce, 1976c; 1984) Stylophora erythraea Von Marenzeller, 1907 (Bruce, 1972b); Stylophora pistillata (Esper, 1792) (Bruce, 1972b). Acroporidae: Acropora spec. (Bruce, 1976 a, 1976b; De Grave, 2000); Distribution. Type locality ‘in mari Suluensi’ (Dana, 1852a). Recorded from ‘Indischen Archipel’ (De Man, 1888); Fiji (Bruce, 1972 a, 1981); Fort Blair, Andaman Islands (Kemp, 1922);? Hawaii (Edmondson, 1925, 1946); Pumgume reef, Murogo reef, Zanzibar and Bamburi, Kenya (Bruce, 1976c); Seychelles (Bruce, 1976b; 1984; Fransen, 1994); Watamu, Kenya (Bruce, 1976a); Macclesfield Bank, South China Sea (Bruce, 1979); Osprey Reef, Coral Sea, Australia (Bruce, 1990); Philippines (Chace & Bruce, 1993); Mariana Islands (Holthuis, 1953); Japan (Hayashi, 2001); Hansa Bay, Papua New Guinea (De Grave, 2000). Now recorded for the first time from the Maldives, Sulawesi (Indonesia), Semporna (Malaysia), and Vanuatu. Remarks. The type description by Dana (1852a) in Latin is brief. It is stated that the rostrum is straight, not overreaching the antennal scales and bears 6 teeth dorsally and one ventrally. On plate 38, fig. 4a of the Atlas published by Dana in 1855, the large antennal tooth and the absence of a hepatic tooth are evident; fig. 4b shows the two-jointed palp on the mandible; fig. 4c and d show the second and third maxillipeds which are similar to those in the present material (Fig. 12B, C). De Man (1888) describes two specimens collected from crinoids in the “Indischen Archipel’. De Man noted the absence of the hepatic spine in his specimens. Bruce (1976b) considered the association of the specimens with crinoids erroneous. Kemp (1922) re-describes the species on the basis of a single specimen from the Andaman Islands. The features described and figured by Kemp (1922) match the characteristics of the present material. The position of the ventral rostral spine halfway the ventral margin of the rostrum is typical for the species. The mandible has an unsegmented palp as in the present specimen from Vanuatu (Fig. 11C). Edmondson (1933, 1946) listed the species form Hawaii. His figure 152c from the 1946 edition, depicting the rostrum and carapace however, shows the presence of a hepatic tooth and a rostrum with 3 ventral teeth. Therefore the specimen he figured cannot be P. orientalis. If this record is based on the same specimen listed by Edmondson in 1925 from Hawaii it is doubtful if the species occurs in Hawaii. The description and figures of the specimens studied by Bruce (1972a) show identical features compared with the present material., Published as part of Fransen, Charles H. J. M., Veer, Eva Van Der & Frolová, Pavlína, 2022, A new species of scleractinian associated shrimp of the genus Palaemonella (Crustacea, Decapoda, Palaemonidae) with a redescription of Palaemonella orientalis Dana, 1852, pp. 557-580 in Zootaxa 5214 (4) on pages 568-578, DOI: 10.11646/zootaxa.5214.4.5, http://zenodo.org/record/7397768, {"references":["Dana, J. D. (1852 a) Conspectus Crustaceorum quae in Orbis Terrarum circumnavigatione, Carolo Wilkes e Classe Reipublicae Foederatae e Duce, lexit et descripsit. Proceedings of the Academy of Natural Sciences of Philadelphia, 1852, 10 - 28.","Dana, J. D. (1852 b) Crustacea. In: United States Exploring Expedition during the years 1838, 1839, 1840, 1841, 1842, under the command of Charles Wilkes, U. S. N., 13, pp. i - viii + 1 - 685.","Weitenweber, R. V. (1854) Aus James Dana's Conspectus of the Crustacea. Lotos. Zeitschrift fur Naturwissenschaften, 4, 5 + 35 + 60 + 107 + 153 + 251.","Dana, J. D. (1855) Crustacea. In: United States Exploring Expedition during the years 1838, 1839, 1840, 1841, 1842, under the command of Charles Wilkes, U. S. N., 13, folio atlas, pp. 1 - 27, pls. 1 - 96.","Man, J. G. de (1888) Bericht uber die von Herrn Dr. J. Brock im indischen Archipel gesammelten Decapoden und Stomatopoden. Archiv fur Naturgeschichte, 53, 215 - 600, pls. 7 - 22 a. https: // doi. org / 10.5962 / bhl. part. 4747","Borradaile, L. A. (1917) On the Pontoniinae. The Percy Sladen Trust Expedition to the Indian Ocean in 1905, under the leadership of Mr. J. Stanley Gardiner. Transactions of the Linnean Society of London, Series 2, 17, 323 - 396, pls. 52 - 57.","Kemp, S. (1922) Notes on Crustacea Decapoda in the Indian Museum. XV. Pontoniinae. Records of the Indian Museum, 24 (2), 113 - 228. https: // doi. org / 10.26515 / rzsi / v 24 / i 2 / 1922 / 163464","Edmondson, C. H. (1925) Crustacea. Marine zoology of tropical Central Pacific (Tanager Expedition Publication no. 1). Bulletin of the Bernice P. Bishop Museum, Honolulu, 27, 3 - 62, pls. 1 - 4.","Edmondson, C. H. (1933) Reef and shore fauna of Hawaii. Special Publication, Bernice P. Bishop Museum, Honolulu, 22, i - ii + 1 - 295.","Edmondson, C. H. (1946) Reef and shore fauna of Hawaii. Special Publication, Bernice P. Bishop Museum, Honolulu, 22, i - iii + 1 - 381, figs. 1 - 223. [revised edition]","Holthuis, L. B. (1952) The Decapoda of the Siboga Expedition. Part XI. The Palaemonidae collected by the Siboga and Snellius Expeditions with remarks on other species. II. Subfamily Pontoniinae. Siboga Expedition Monograph, 39 a 10, 1 - 254.","Holthuis, L. B. (1953) Enumeration of the Decapoda and stomatopod Crustacea from Pacific coral islands. Atoll Research Bulletin, 24, 1 - 66. https: // doi. org / 10.5479 / si. 00775630.24.1","Holthuis, L. B. (1955) The Recent genera of the caridean and stenopodidean shrimps (class Crustacea, order Decapoda, supersection Natantia) with keys for their determination. Zoologische Verhandelingen, Leiden, 26, 1 - 157.","Cloud, P. E. Jr. (1959) Geology of Saipan Mariana Islands. Part 4. Submarine Topography and Shoal-Water Ecology. Geological Survey Professional Paper, 280 - K, i - vi + 361 - 445. https: // doi. org / 10.3133 / pp 280 K","Bruce, A. J. (1972 a) A report on a small collection of pontoniid shrimps from Fiji, with the description of a new species of Coralliocaris Stimpson (Crustacea, Decapoda, Natantia, Pontoniinae). Pacific Science, 26, 63 - 86.","Bruce, A. J. (1972 b) A review of information upon the coral hosts of commensal shrimps of the subfamily Pontoniinae, Kingsley, 1878 (Crustacea Decapoda, Palaemonidae). In: Proceedings of the Symposium on Corals and Coral Reefs, 1969. The Marine biological Association of India, Cochin, pp. 339 - 418.","Hipeau-Jacquotte, R. (1972) Etude des crevettes Pontoniinae (Palaemonidae) associees aux mollusques Pinnidae a Tulear (Madagascar). CNRS A. O. 4845. Thesis, Universite d'Aix-Marseille, Marseille, 212 pp.","Bruce, A. J. (1976 a) A report on a small collection of shrimps from Kenya National Marine Park at Malindi, with notes on selected species. Zoologische Verhandelingen, Leiden, 145, 1 - 72.","Bruce, A. J. (1976 b) A report on some pontoniinid shrimps collected from the Seychelle Islands by the F. R. V. \" Manihine \", 1972, with a review of the Seychelles pontoniinid shrimp fauna. Journal of the Linnean Society of London, Zoology, 59, 89 - 153, figs. 1 - 30, tabs. 1 - 8. https: // doi. org / 10.1111 / j. 1096 - 3642.1976. tb 01012. x","Bruce, A. J. (1976 c) A synopsis of the pontoniinid shrimp fauna of East Africa. Journal of the Marine Biological Association of India, 16 (2), 462 - 490. [1974]","Bruce, A. J. (1977) The hosts of the coral-associated Indo-West Pacific pontoniine shrimps. Atoll Research Bulletin, 205, 1 - 19. https: // doi. org / 10.5479 / si. 00775630.205.1","Bruce, A. J. (1979) Records of some Pontoniinid shrimps from the South China Sea. Cahiers de l'Indo-Pacifique, 1 (2), 215 - 248.","Bruce, A. J. (1981) Pontoniine shrimps from Viti Levu, Fijian Islands. Micronesica, 17 (1 & 2), 77 - 95, figs. 1 - 11.","Bruce, A. J. (1984) Marine caridean shrimps of the Seychelles. In: Stoddard, D. R. (Ed.), Biogeography and ecology of the Seychelles Islands. Junk Publishers, The Hague, pp. 141 - 169.","Bruce, A. J. (1990) Recent additions to the pontoniine shrimp fauna of Australia. The Beagle, Records of the Northern Territory Museum of Arts and Sciences, 7 (2), 9 - 20.","Chace, F. A. & Bruce, A. J. (1993) The caridean shrimps (Crustacea: Decapoda) of the Albatross Philippine Expedition 1907 - 1910, Part 6: Superfamily Palaemonoidea. Smithsonian Contributions to Zoology, 543, 1 - 152, figs. 1 - 23. https: // doi. org / 10.5479 / si. 00810282.543","Fransen, C. H. J. M. (1994) Marine palaemonoid shrimps of the Netherlands Seychelles Expedition 1992 - 1993. Zoologische Verhandelingen, Leiden, 297, 85 - 152.","De Grave, S. (2000) Caridean shrimps (Crustacea, Decapoda) from Hansa Bay, Papua New Guinea: Palaemonidae and Gnathophyllidae. Bulletin de l'Institut Royal des Sciences Naturelles de Belgique, Biologie, 70, 119 - 148.","Hayashi, K. - I. (2001) Prawns, shrimps and lobsters from Japan (116). Family Palaemonidae, subfamily Pontoniinae - genera Vir and Hamopontonia. Aquabiology, Tokyo, 132, 62 - 66.","Bruce, A. J. (2003) The Pontoniine shrimp fauna of Hong Kong and the south China sea (Malacostraca: Decapoda: Palaemonidae). In: Morton, B. (Ed.), Proceedings of an International Workshop Reunion Conference, Hong Kong: Perspectives on Marine Environment Change in Hong Kong and Southern China, 1977 - 2001. Hong Kong University Press, Hong Kong, pp. 209 - 257.","Fransen, C. H. J. M. & Holthuis, L. B. (2007) Vir smiti spec. nov., a new scleractinian associated pontoniine shrimp (Crustacea: Decapoda: Palaemonidae) from the Indo-West Pacific. Zoologische Mededelingen, Leiden, 81 (4), 101 - 114.","Li, X., Liu, R., Liang, X. & Chen, G. (2007) Fauna Sinica: Invertebrata. Vol. 44. Crustacea: Decapoda: Palaemonoidea. Science Press, Beijing, ii + 381 pp. [in Chinese]","Spence Bate, C. (1888) Report on the Crustacea Macrura collected by the Challenger during the years 1873 - 76. Report on the Scientific Results of the Voyage of H. M. S. Challenger During the Years 1873 - 76, Zoology, 24 (Part 52), i - xc + 1 - 942.","Estampador, E. P. (1937) List of Philippine crustacean decapods. The Philippine Journal of Science, 62, 465 - 559.","Rathbun, M. J. (1906) The Brachyura and Macrura of the Hawaiian islands. Bulletin of the United States Fish Commission, 23 (3), 827 - 930."]}

Palaemonella rubrolineata sp. nov. (Figs. 1–8) Palaemonella spec.: Frolová et al., in prep.. Material examined. MZB Cru 5448: 1 ovigerous female holotype, pocl. 2.2mm; stn RAJ.41, Indonesia, Raja Ampat Islands, West Papua, SE Gam, Desa Besir, 00°27.802′S, 130°41.243′E, 2.xii.2007, depth 5 m, on Pocillopora damicornis, collected by C.H.J.M. Fransen, CF142. Paratypes. RMNH.CRUS.D. 53070: 2 ovigerous females, pocl. 2.1–2.2mm; 1 male, pocl. 1.5mm; same locality as holotype, GenBank accession nrs. OP306073 (COI); OP304831 (16S). RMNH.CRUS.D. 48816: 2 ovigerous females, pocl. 1.6 and 1.8mm; 2 non-ovigerous females with abdominal bopyroid, pocl. 1.5mm; 4 males, one with bopyroids on abdomen and antennula, pocl. 0.8–1.6mm; stn MAL.15, Indonesia, Moluccas, Ambon, Ambon bay, S coast, cape W of Amahusu, 03°44′S 128°08′E, 16.xi.1996, depth ca. 15 m, scuba diving, on Seriatopora hystrix, collected by C.H.J.M. Fransen. RMNH.CRUS.D. 53067: 1 male pocl. 2.2mm, 1 juvenile pocl. 1.6mm; stn RAJ.02, Indonesia, Raja Ampat Islands, West Papua, E Kri Island, Sorido resort lagoon, near jetty, 00°33.347′S 130°41.225′E, 19.xi.2007, depth unknown, on Seriatopora hystrix; collected by E. van der Veer, GenBank accession no. OP326597 (16S), photo C.H.J.M. Fransen. RMNH.CRUS.D. 53068: 1 ovigerous female (rostrum broken, P2–5 missing), pocl. 1.8mm; stn RAJ.49, Indonesia, Raja Ampat Islands, West Papua, NW off Mansuar I., Lalosi reef, 00°32.892′S 130°29.852′E, 6.xii.2007, depth unknown, on Seriatopora hystrix, collected by E. van der Veer, GenBank accession no. OP326598 (16S), photo C.H.J.M. Fransen. MNHN-IU- 2014- 22476: 1 ovigerous female, pocl. 1.9mm; stn FR18, Vanuatu, Santo, NW Tutuba Island, 15°19′47.892″S 167°10′1.128″E, 18.ix.2006, depth unknown, steep reef slope, collected by C.H.J.M. Fransen, GenBank accession no. OP326599 (16S). Description. Small slender shrimp of slightly compressed body form. Carapace (Fig. 1A) smooth, slightly swollen posteriorly; orbit obsolescent; inferior orbital angle slightly produced; antennal spine long, slender, acute and marginal, reaching distal margin of basicerite; hepatic spine distinct, slightly shorter than antennal spine, located distinctly lower than antennal spine; anterolateral angle rounded, not produced. Rostrum (Fig. 1A–C) well developed, straight, horizontal, reaching distal margin of scaphocerite, with 6 or 7 acute dorsal teeth, of which 0–2 small and subdistal, slightly separated from proximal teeth, proximalmost tooth postorbital, second tooth at level of orbit; ventral margin with single row of short setae, with single acute tooth at level of distal margin of intermediate segment of antennular peduncle. Abdomen (Fig. 8A, B) normal, third tergite not produced, sixth segment (Fig. 1D) about 1.9 times length of fifth, 1.3 times longer than deep, with posterolateral and posteroventral angles bluntly produced; pleura of first four segments enlarged, broadly rounded, fifth segment (Fig. 1D) with posterolateral tooth. Telson (Fig. 1E) about 1.4 times longer than sixth abdominal segment, 2.0 times longer than proximal width, lateral margins convergent, sublinear, with two pairs of small subequal dorsal spines at about 0.51 and 0.74 of telson length, distal margin (Fig. 1F) about 0.32 of proximal margin width, rounded, without median process, lateral spines small, similar to dorsal spines, intermediate spines robust, 4.6 times as long as lateral spines, submedian spines about half length of intermediate spines, setulose. Eye (Fig. 1A) with whitish globular cornea with red lines, with distinct accessory pigment spot dorsally; cornea almost as wide as maximum width of eyestalk; eyestalk 1.2 times longer than maximum width. Antennula (Fig. 2A) normal; basal segment of antennular peduncle about half as long as scaphocerite, with acute ventromedial tooth, distal margin convex, with plumose setae, distolateral tooth reaching halfway intermediate segment, lateral margin slightly convex, medial margin straight with row of plumose setae, statocyst normal; stylocerite slender, acute, reaching to half segment length; intermediate and distal segments subequal in length, together about 0.5 of basal segment length; flagella long, slender, upper flagellum biramous, proximal 8–16 segments fused (usually 9–10), shorter free ramus with 3 segments, with 5–10 groups of aesthetascs, longer free ramus slender. Antenna (Fig. 2B) normal; basicerite armed with short acute distolateral spine; ischiocerite and merocerite normal; carpocerite subcylindrical, reaching to about 0.25 of scaphocerite length; flagellum well developed; scaphocerite extending well beyond antennular peduncle, 4 times longer than maximum width, distal margin rather small, broadly rounded, lateral margin concave with acute distolateral tooth exceeding distal margin of lamina. Epistome and labrum normal. Fourth thoracic sternite (Fig. 1G) with strong, broad, blunt, median process. Fifth thoracic sternite (Fig. 1G) with shallow lateral plates posteromedial of second pereiopods with acute triangular submedian processes. Sixth to eight thoracic sternites unarmed, increasing in width posteriorly. Mandible (Fig. 3A) robust, with small unsegmented palp with few small simple setae; molar process stout with large angular teeth and brushes of stout setae; incisor process also stout with three large acute distal teeth. Maxillula (Fig. 3B) with upper lacinia slender, with two rows of robust simple and serrulate spines medially; lower lacinia slender, setose distally; palp distinctly bilobed, upper lobe with single small simple seta, lower lobe with a small, ventral, single, short, recurved seta. Maxilla (Fig. 3C) with basal endite well developed, distinctly bilobed; distal and proximal lacinia equal in length, both fringed medially by many long simple setae, median border without setae; coxal endite obsolete, median margin straight, without setae; scaphognathite about twice as long as proximal width; palp well developed, basally broad, tapering distally, indistinctly two-segmented, with few plumose setae on lateral border. First maxilliped (Fig. 4A) with basal and coxal endites distinct; basal endite broad, anterolateral border sparsely setose, medial margin straight, with numerous slender simple and serrulate setae; coxal endite medially biconvex, sparsely setose; exopod well developed, flagellum with about 6 plumose setae distally, caridean lobe small, narrow; coxa with very large bilobed exopod, anterior lobe slightly larger than posterior lobe; palp tapering distally with one large plumose seta subdistally on medial border. Second maxilliped (Fig. 4B) with endopod normally developed; with dactylar segment narrow, 4 times longer than broad, densely fringed with numerous coarsely serrulate, spiniform, and long curled, finely serrulate setae medially; distomedial lobe of propodal segment slightly produced, rounded, with row of long slender simple and serrulate setae, ventrolateral margin devoid of setae; carpal segment distomedially angular, without setae, unarmed; meral segment medially excavate, without setae; basal and ischial segments fused, both segments medially excavate, with few short setae medially; exopod normal, with long plumose setae distally; coxal segment slightly produced medially, with few long setae; epipod small, simple, subrectangular, without podobranch. Third maxilliped (Fig. 4C) with endopod slender, reaching with terminal segment beyond carpocerite; ischiomerus and basis distinct, ischiomerus almost 5 times longer than wide, flattened and twisted, setose medially, otherwise glabrous, with 3 robust spines in distal two thirds; carpal segment 5 times longer than wide, 0.90 of ischiomeral length, subcylindrical, with groups of long serrulate setae medially; terminal segment 0.55 of ischiomeral segment, tapering distally with terminal spine, medial margin with groups of short serrulate setae; basis with few simple setae along slightly convex median margin; exopod well developed, reaching distal margin of ischiomerus, with numerous plumose setae distally; coxa with small medial lobe and rounded epipod laterally. First pereiopods (Fig. 5A) slender, exceeding carpocerite with distal part merus, carpus and chela; chela (Fig. 5B) normal, slightly compressed, palm twice as long as deep, with several rows of cleaning setae proximoventrally, fingers about as long as palm, slender, tapering, both with brushes of simple setae and hooked tip distally, cutting edges simple, entire; carpus 1.5 times chela length, slender, 6 times longer than distal width, tapering slightly proximally, with several cleaning setae distoventrally; merus about as long as carpus, about 7 times longer than wide; ischium and basis with several long simple setae medially; coxa with small setose ventromedial lobe. Second pereiopods (Fig. 5C, E) equal and similar; chela about 2.6 times carapace length, palm smooth about 3.3 times longer than deep, slightly swollen proximally, fingers (Fig. 5D, F) 0.6 times palm length, slender, dactylus about 5.4 times longer than proximal depth, dorsal margin slightly convex, tip hooked, acute, cutting edge with 2 teeth in proximal half, distal cutting edge entire; fixed finger similar, with 1 large tooth at level between two dactylar teeth and 3 small teeth proximally; carpus about 0.4 of chela length, about 5 times longer than distal width, tapering proximally, constricted then flared distally with blunt angular dorsal lobe; merus slightly longer than carpus, 6.4 times longer than central width, armed with distomesial tooth; ischium about 0.5 length of merus, tapering proximally; basis and coxa without special features. Third pereiopods (Fig. 6A) slender, exceeding carpocerite by carpus, propodus and dactylus; dactylus (Fig. 6B) simple, slightly curved, 0.18 of propodus length, 3.6 times longer than proximal depth, corpus 2.6 times longer than proximal width, distal width 0.36 times proximal width, dorsal margin convex, with 3–4 simple setae at about 0.65 of length, ventral margin proximally slightly convex, distally concave, armed, with minute distal accessory tooth, without setae; unguis indistinctly demarcated, 0.42 of corpus length, simple, curved, distally acute; propodus about 13 times longer than wide, slightly compressed, straight, uniform, with many long slender setae distally, with one distoventral spine and two similar spines in distal third; carpus normal, about almost half propodus length, unarmed; merus as long as propodus, 9.3 times longer than wide, uniform, unarmed; ischium, basis and coxa without special features. Fourth pereiopods (Fig. 6C, D) similar to third, slightly longer. Fifth pereiopods (Fig. 7A, B) similar to fourth, slightly longer, propodus with one subdistal ventral spine, few rows of serrulate setae distoventrally. Uropods (Fig. 1E) extending beyond telson; protopodite robust, unarmed; exopod with lateral margin straight, non-setose, with small acute posterolateral tooth, flanked medially by mobile spine twice as long as posterolaterlal tooth; endopod slightly shorter than exopod. Pleopods with endopods shorter than exopods. Ova about 50, size 0.38mm. First pleopod of female with endopod almost half as long as exopod, with long plumose setae medially and distally. Male endopod of first pleopod (Fig. 7C) half as long as exopod, about 3.5 times longer than wide, with median margin concave, distally slightly expanded, with relatively short plumose marginal setae. Endopod of second pleopod (Fig. 7D) 0.8 times length of exopod; appendix masculina well developed, with several rows of strong serrulate setae, just falling short of appendix interna. Size. Maximal pocl. in males 1.6mm, in ovigerous females 2.2mm. Coloration (Fig. 8). Body and appendages translucent with reddish tinge. Thorax and abdomen with few yellow spots and small white chromatophores. Eyestalks with red longitudinal lines and few white chromatophores anteriorly. Red spots at base of uropods and at joints of pereiopods. Cutting edges of second pereiopod chela red. Host. Scleractinia: Pocilloporidae: Pocillopora damicornis (Linnaeus, 1758) and Seriatopora hystrix Dana, 1846. Distribution. The species has been recorded from Ambon and Raja Ampat, Indonesia and Santo, Vanuatu. Etymology. Named after the red stripes on the cutting edges of the chelae and on the eyestalks combining the Latin word ‘ruber’ = red and ‘lineatus’ = stripes. Remarks. The new species is most closely related to P. orientalis (see Frolová et al., in prep.). A unique feature both species share is the wreath of long setae at the distal part of the ambulatory propodi (Figs. 6A–D, 7A, B, 14A–D, 15A, B). The new species differs from P. orientalis in: 1) the presence of a hepatic spine (Fig. 1A) which is absent in P. orientalis (Fig. 9A); 2) the more slender body and longer appendages (Fig. 8) than in P. orientalis (Fig. 16A); 3) the more slender rostrum (Fig. 1A–C) than in P. orientalis (Fig. 9A–C); 4) the pleura of the fifth abdominal segment having a posterolateral tooth (Fig. 1D) while it is broadly rounded in P. orientalis (Fig. 9D); 5) having the fingers of the first pereiopods without rows of long serrate setae distally (Fig. 5B) whereas these are present in P. orientalis (Fig. 13A); 6) having the cutting edges of the second chela as well as the joints of the pereiopods dark red coloured (Fig. 8A, B) while these are translucent in P. orientalis (Fig. 16A)., Published as part of Fransen, Charles H. J. M., Veer, Eva Van Der & Frolová, Pavlína, 2022, A new species of scleractinian associated shrimp of the genus Palaemonella (Crustacea, Decapoda, Palaemonidae) with a redescription of Palaemonella orientalis Dana, 1852, pp. 557-580 in Zootaxa 5214 (4) on pages 558-568, DOI: 10.11646/zootaxa.5214.4.5, http://zenodo.org/record/7397768

The present study is the first exhaustive checklist of porcelain crabs (Porcellanidae) distributed on the Pacific and Atlantic (Caribbean) coasts of Panama, based on literature records and material collected between 2006 and 2019. The Panamanian porcellanid fauna is currently composed of a total of 76 species, with 26 species reported from the Caribbean coast, 45 species reported from the Pacific coast, and five species reported from both sides of the Central American Isthmus (Isthmus of Panama). In other words, the Caribbean and Pacific coasts of Panama each harbour, respectively, 31 and 50 species of porcellanid crabs. However, this total includes two problematic porcellanid records from Panama, viz. Clastotoechus nodosus (Streets, 1872) and Petrolisthes brachycarpus Sivertsen, 1933, as well as a putatively undecribed taxon reported as Pachycheles sp. The following four species are recorded for the first time from Panama, viz. Euceramus panatelus Glassell, 1938, Pachycheles riisei (Stimpson, 1859) [also being new for Mexico], Petrolisthes dissimulatus Gore, 1983 and P. tonsorius Haig, 1960. In addition, Minyocerus kirki Glassell, 1938 is newly recorded from Colombia, extending its previously known distributional range significantly southwards. Most species are illustrated in colour, several for the first time, based on material from Panama or other localities. At least 20 further species (16 in the Atlantic, 5 in the Pacific, and 1 in both oceans) are suspected to occur in Panamanian waters, based on their records from the neighbouring Costa Rica and/or Colombia, or their wide distribution in the Caribbean Sea or the tropical eastern Pacific. The presence of several cryptic or pseudocryptic species (at least some of them presumably undescribed), especially in the taxonomically challenging Petrolisthes galathinus (Bosc, 1802) species complex, or the eventual species splitting within some taxa currently seen as transisthmian, will likely further increase the total number of species present in Panama. The porcellanid fauna of Panama is also ecologically remarkably diversified. Most Panamanian porcelain crabs are free-living under rocks, in crevices of rocks, dead coral heads, coralline algae, coral rubble etc., or on mud, among mangrove roots. Euceramus panatelus lives in possibly self-dug burrows in soft mud or muddy sand, whereas its congener E. transversilineatus (Lockington, 1878) may occasionally be found in association with holothuroids. At least 15 further porcellanid species occurring in Panama live in permanent or facultative associations with a variety of other marine organisms, including sponges, cnidarians (octocorals), echinoderms (sea urchins, sea stars, sea cucumbers), polychaetes (parchment worms) and other decapod crustaceans (hermit crabs), making them one of the most attractive groups for studies of symbiosis-related behaviour and evolution.

Macrobrachium irwini sp. nov. (Figure 3 & 4) Type material. Holotype. 1 male (ZSI/SRC/C-354) CL (carapace length) 22 mm, TL (total length) 41 mm, collected from Nandhini River at Kateel, Karnataka, India (13°0′44″N; 77°32′10″E), Jan 2022. Coll. Maclean Antony Santos. Paratypes. Male (ZSI/SRC/C-355), CL 19 mm, TL 30 mm; Female (ZSI/SRC/C-356), CL 22 mm, TL 49 mm, same data as holotype. Diagnosis. Rostral formula 13/2 with 6 postorbital teeth, distal end of rostrum slightly curved upwards; carapace scabrous with minute spines, branchial margins with setae; second chelate legs unequal; propodus of second major pereiopod is 2.07 times as long as dactyl and 5.78 times longer than width. Cutting edges of immovable fingers armed with 11–16 tubercles and 10–12 along the movable fingers. The setae on the palm and basal regions of the fingers are matted together to form a velvety covering. Propodus of minor second pereiopod is 1.92 times longer than dactyl and 5.69 times as long as width. Second minor pereiopod with 4–5 tubercles on the immovable fingers and 4 tubercles on the movable fingers at the proximal cutting edges. Orange colouration at the extreme tips of claw. Appendix interna is 1.4 times longer than appendix masculina with numerous stiff setae on distal border, and extended up to 2/3 of endopod. Description. Rostrum (Figure 3 A, B) straight, slightly curved upwards distally, reaching distal margin of third antennular peduncle. Dorsal margin bearded with 13 teeth, 6 teeth appeared behind orbital margin and first three proximal teeth equally spaced. Distal end of the rostrum extends only as far as the terminal segment of antennular peduncle. Ventral margin slightly curved upwards, with two teeth, long setae closely arranged in between them. Carapace (Figure 3 A) scabrous with minute spines; antennal spine well developed, situated below the orbit. Gastro-frontal carina turning anterodorsally upon itself at posterior end. Adrostral sulcus and carina falling distinctly short. Long cervical grooves, extending almost to dorsal midline of carapace. Hepatic spine shorter appeared lower than antennal spine. Hepatic carina and sulcus well marked. Eyes well developed; cornea longer and broader than stalk. Abdomen segments (Figure 3 C) smooth, glabrous, first to third pleura broadly rounded; fourth subtriangular, fifth subrectangular and sixth pleuron with a distal sharp edge at the posterodistal margin. Antennular peduncle (Figure 3 D) three segmented. Middle segment is the shortest. Basal segment of antennular peduncle broad, 1.73 times as longer than middle and 1.44 times as long as the terminal segment. Two branches of outer flagellum of antennule fused basally for 6 segments. Antennal scale (Figure 3 E) large, rectangular, 3.2 times as long as width, lateral margin straight, sharply pointed in disto‐lateral end. Telson (Figure 3 F) conical and slender with two pair of dorsal spines. First and second pair of dorsal spines are located at 2.47 mm and 3.828 mm from the anterior region of telson. Posterior end with two pairs of spines, outer pair smaller than inner pair, a tuft of long plumose setae present in between the inner pair of spines. Telson terminated with a conical spine at the apices. Uropodal diaeresis with an accessory spine longer than the major one bordering long setae. First pleopod (Figure 3 G) The exopods from the first pair of pleopods was approximately twice the length of the endopods. The endopods had no appendix interna and no cincinulli. Second pleopods (Figure 3 H) with well-developed appendix masculine, almost reaching middle of endopod, bearing numerous spines on distal margin. Appendix interna is 1.4 times longer than appendix masculina with numerous stiff setae on distal border, and extended up to 2/3 of endopod. First pereiopod (Figure 4 A, B) slender; ischium slightly inflated, shorter than merus; carpus 2.45 times longer than propodus, 4.64 times than dactyl and 1.3 times than merus. Palm cylindrical, equal length to fingers; fingers slender, equal sized with tufts of setae on outer margins. Second pereiopods (Figure 4 C, D) unequal, dorsal surfaces of dactyl, propodus, carpus, merus and ischium covered with minute spines and long setae. The major second pereiopod sub-equals to size of total body length. Ischium 0.4 times as long as merus; merus subequal to (1.02 times) carpus; carpus short, conical shaped, with proximal part narrow, about 0.4 times as long as propodus; propodus 2.08 times as long as dactyl and 5.78 times longer than width. Fingers nearly straight with pointed tips and dark reddish setae in claw tips, 13–16 blunt teeth along both cutting edges, reduce gradually in size towards the distal end. The setae on the palm and basal regions of the fingers are matted together to form a velvety covering. Minor second pereiopod (Figure 4 E, F) short and slender, with minute spines and setae as on major second pereiopod, about 0.69 times of body length; ischium 0.68 times as long as merus; merus 1.01 times as long as carpus; carpus 0.57 times longer than propodus; propodus 1.92 times longer than dactyl and 5.69 times as long as width. Fingers with blunt teeth on both the proximal cutting edges. Third to firth pereiopods (Figure 4 G–L) nearly equal sized, slender and smooth with long setae scattered on the lateral margins. Dactylus slender, sharply pointed and hooked with tuft of setae. The propodus of pereiopods have 8 prominent spines on the dorso‐ventral margin. Live colour patterns. Male: In wild, the carapace is dark brown. A yellow transverse band runs along the dorsal surface from the rostral tip up to the last abdominal segment. Lateral sides of the abdomen are black with sparsely scattered yellow dots. First and third to fifth pereiopods are encircled with alternative black and yellow bands. Second pereiopods brownish yellow with black claws; extreme tips are orange. Telson black with yellow uropods. (Figure 5 A, B) Female: In wild, the carapace is dark blue.A discontinuous yellow transverse band runs along the dorsal surface from the rostral tip to the last abdominal segment. A prominent yellow and black band around the third abdominal segment. Lateral sides of the abdomen are bluish-black with sparsely scattered yellow dots. First and third to fifth pereiopods are encircled with alternative blue and yellow bands. Second pereiopods blue with extreme tips of the claw in orange. Telson black with blue uropods. (Figure 5 C) In aquarium, the colour fades over time until the body appears translucent. Initially, the first third to fifth pereiopods are encircled with alternative light blue and pale‐yellow bands. Second pereiopods appears yellow with black patches on the margins and dorsal surface. Blue spots towards the distal ends on uropods. Habitat. Specimens of Macrobrachium irwini sp. nov. were collected from a river running through a secondary forest with heavily vegetated banks. The river is fast flowing with deep waters during monsoon to almost dry with few patches of water during the summer season. The topography of the river is rocky bed with rubbles and abundant in aquatic plants, leaf litters and driftwoods that make this place an excellent habitat for freshwater shrimps for feeding and hiding. (Figure 2) Etymology. The new species Macrobrachium irwini sp. nov., has been honoured in the name of Stephen Robert Irwin (also Steve Irwin), nicknamed ‘The Crocodile Hunter’. The ‘ irwini ’ has also been dedicated to his entire family members Terri Irwin (Wife), Robert Irwin (Son), Bindi Irwin (Daughter), Candler Powell (Son in law) and Gracy Warrior (Grand Daughter) for being an inspiration for nature enthusiasts through multitasking role as zookeeper, conservationist, television personality and wildlife photographer. Overall, we would like to dedicate the new species to Irwin’s family efforts in continuing Steve Irwin’s mission of “Conservation Through Exciting Education” in Australia Zoo, Queensland. Distribution. Known only from Nandini River, Kateel, Dakshina Kannada District, Western ghats (Karnataka), India. Remarks. The new species is morphologically different to M. snpurii and M. scabriculum. It can be clearly distinguished from the other species in the genus based on set of characters such as rostrum, tubercles of second pereiopods and color pattern (Table 1). First, the distal end of the rostrum reaching up to the tip of antennular peduncle in M. irwini sp. nov., compared to not exceeding the tip of 3 rd antennular segment in M. snpurii. Whereas in M. scabriculum, it generally reach as far as the tip of the antennular peduncle, but in some cases may fall short or extends slightly beyond (Henderson & Matthai, 1910). Distal end of the rostrum is slightly curved upwards in M. irwini sp. nov., whereas straight in M. scabriculum and upwards in M. snpurii (Pillai & Unnikrishnan, 2013). The dorsal rostral dentition is 13–14 in M. irwini sp. nov., 12–14 in M. snpurii and 12–15 in M. scabriculum. Dorsal margin with 6 post‐orbital teeth in M. irwini sp. nov., 2 in M. snpurii and 4–5 in M. scabriculum. The ventral rostral dentition is 2 in M. irwini sp. nov., compared to 4 in M. snpurii and 2–3 in M. scabriculum. The distance between the ventral rostral teeth clearly varies between M. irwini sp. nov., and M. snpurii. In M. irwini sp. nov., the first three proximal rostral teeth on dorsal region are widely spaced, where in M. snpurii only the first two proximal rostral teeth is widely spaced. Uniform distance is maintained between the remaining series of teeth in M. irwini sp. nov., compared to the even distribution of second to tenth and uneven distribution of tenth to twelfth rostral teeth in M. snpurii. The carapace is rugged and scabrous in M. irwini sp. nov. and M. scabriculum (Jalihal et al. 1988), compared to the smooth and glabrous carapace in M. snpurii. First pereopod: Carpus of M. irwini sp. nov. is 2.5 times longer than propodus compared to is 2.42 times in M. snpurii and 2.0 to 2.3 times in M. scabriculum. Palm is cylindrical in M. irwini sp. nov., and M. snpurii compared to inflated palm in M. scabriculum. Second pereiopods of M. irwini sp. nov., and M. scabriculum is unequal in size for males and subequal for females, however it’s equally sized in M. snpurii. Large second pereiopod of M. irwini sp. nov. have 11–16 tubercles along the cutting edges of immovable finger, whereas 22–29 in M. scabriculum (Jalihal et al. 1988) and 2 in M. snpurii. Similarly, 10–12 tubercles along the cutting edges of movable fingers of M. irwini sp. nov., compared to 18–28 in M. scabriculum and 2 in M. snpurii. The surface of second pereiopod from dactyl to merus is rugged with minute close‐set spinules in M. irwini sp. nov., however, in M. scabriculum only the chelipeds and lower surface of carpus are furnished with minute spinules. In males, the setae of large second pereiopod is matted together to form a velvety covering on the chela of M. irwini sp. nov., and M. scabriculum which is absent in M. snpurii. In M. scabriculum and M. snpurii a wide gaping exist when fingers are closed as the opposed margins do not meet, compared to a narrow gap in M. irwini sp. nov.. In second major pereiopod, propodus is 2 times longer than dactyl in M. snpurii and 1.6 to 2.1 times for M. scabriculum. However, in M. irwini sp. nov., the propodus is 2.08 times longer than dactyl of major pereiopod. Carpus is 1.06 times longer than propodus in M. snpurii whereas it’s 0.4 to 0.6 times as long as propodus in M. scabriculum and 0.4 times as long as propodus in M. irwini sp. nov.. Size of merus is nearly equal to carpus in M. scabriculum compared to 1.02 times as long as carpus in M. irwini sp. nov., and 0.52 times as long as carpus in M. snpurii (Pillai & Unnikrishnan, 2013). Ischium and merus are of equal length in M. snpurii compared to ischium longer than merus by 0.4 times in M. irwini sp. nov., and 0.5 to 0.8 times in M. scabriculum. Lastly, M. irwini sp. nov., can also be easily distinguished from closely related species based on colour pattern. A pale band runs along the dorsal surface from the tip of the telson to the rostrum in M. scabriculum compared to a yellow transverse band that runs along the dorsal surface from the rostral tip up to the last abdominal segment in M. irwini sp. nov. In M. scabriculum, the fingers of shorter cheliped are dark blue except its extreme tips whereas in M. irwini sp. nov., fingers are black with extreme tips in orange colouration (Figure 5). In M. scabriculum the uropods are violet with white borders compared to the pale‐blue patches on the uropods of M. irwini sp. nov., and have tuft of long plumose setae on telson, whereas M. scabriculum possess 15–20 pair of setae and M. snpurii has a single pair of plumose setae. Discussion. M. irwini sp. nov., is known only from the type‐locality. It has considerable potential for commercial exploitation in the aquarium trade, because of its striking colour patterns. The species is threatened by over‐harvesting and deterioration of the freshwater habitats due to non‐judicious anthropogenic interventions. In order to guarantee supply for the ornamental trade, and to protect the species from over‐exploitation, protocols for sustainable harvesting and culturing of this shrimp have to be established to promote livelihood sustainability. Further, more exploration needs to be done in Western ghats region, which is a hotspot for biological diversity to document more endemic species., Published as part of Kunjulakshmi, K., Santos, Maclean Antony & Prakash, S., 2022, Macrobrachium irwini sp. nov., a new species of freshwater shrimp from Western Ghats, India (Caridea: Palaemonidae), pp. 416-425 in Zootaxa 5194 (3) on pages 418-424, DOI: 10.11646/zootaxa.5194.3.5, http://zenodo.org/record/7154610, {"references":["Henderson, J. R. & Matthai, G. (1910) XXVIII. On certain species of Palaemon from South India. Records of the Indian Museum, 5, 297 - 299. https: // doi. org / 10.5962 / bhl. part. 10503","Pillai, P. M. & Unnikrishnan, V. (2013) Morphology and molecular phylogeny of Macrobrachium snpurii, a new species of the genus Macrobrachium (Bate, 1868) from Kerala, India. Zootaxa, 3664 (4), 434 - 444. https: // doi. org / 10.11646 / zootaxa. 3664.4.2","Jalihal, D. R., Shenoy, S. & Sankolli, K. N. (1988) Freshwater prawns of the genus Macrobrachium Bate, 1868 (Crustacea, Decapoda, Palaemonidae) from Karnataka, India. Records of Zoological Survey of India, 112, 1 - 74."]}

The caridean shrimp Tuleariocaris neglecta Chace, 1969, is reported from the Alcatraz Archipelago (24°S, off the coast of southeastern Brazil) in association with the sea urchin Astropyga magnifica Clark, 1934. This finding significantly increases the known range of this species from 20°S to 24°S. An overview of the species in Tuleariocaris with their respective associated host sea urchins is provided.

Pseudopalaemon chryseus Kensley & Walker, 1982 Examined material. Municipality of Macapá: Maruanum River,ripary vegetation(00°11’30.67”N, 51°17’05.65”W), 3.iv.2002, cols. I.M. Vieira and O.M. Costa, 1 female and 1 female with eggs (IEPA 321); Environmental Protection Area of the Curiaú River (APA do Rio Curiaú), Curralinho (00°07’26.74”N, 51°06’50.18”W), 08.vi.2002, cols. I.M. Vieira, O.A. Alencar and O.M. Costa, 1 male and 2 females (IEPA335); Curralinho, in aquatic macrophytes (00°07’26.74”N, 51°06’50.18”W), 22.ii.2002, cols. I.M. Vieira, O.A. Alencar and O.M. Costa, 9 males and 22 females (IEPA345); idem, Curiaú River (00°08’43.2”N, 51°02’31.9”W), 25.ii.2002, cols. O.A. Alencar, D. Filocreão and O.T. Arnaud, 1 male and 1 female (IEPA368); idem (00°08’43.2”N, 51°02’31.9”W), 19.viii.2002, cols. O.A. Alencar, D. Filocreão and O.T. Arnaud, 2 males and 3 females (IEPA369); idem (00°08’48.2”N, 51°02’27.4”W), 26.vii.2002, cols. O.A. Alencar, D. Filocreão and O.T. Arnaud, 3 males and 8 females (IEPA381); idem (00°08’48.2”N, 51°02’27.4”W), 3 males (IEPA415); idem (00°08’48.2”N, 51°02’27.4”W), 26.vii.2002, colls. O.A. Alencar, D. Filocreão and O.T. Arnaud, 1 female with eggs (IEPA419); balneary of the APA of the Curiaú River (00°08’43.83”N, 51°02’31.44”W), 31.viii.2002, colls. I.M. Vieira, 2 females (IEPA464); APA do Rio Curiaú (00°08’44.16”N, 51°02’32.77”W), 25.ix.2002, colls. I.M. Vieira, O.A. Alencar and O.M. Costa, 1 males (IEPA 475);— Municipality of Macapá: Stream of Amapá Florestal and Celulose S.A (AMCEL), savana (00°15’29”N, 51°03’39”W), 7 specimens (IEPA770). Municipality of Porto Grande: stream near to embankment, in area of plantation of Amapá Florestal e Celulose S.A, savana (00°15’29”N, 51°03’39”W), 5.vi.2002, cols. I.M. Vieira, O.A. Alencar and O.M. Costa, 3 males and 4 females (IEPA 340); dam in area 36 of AMCEL, savana (00°28’60”N, 51°04’59”W), 06.vi.2002, cols. I.M. Vieira, O.A. Alencar and O.M. Costa, 1 male and 1 female (IEPA350); idem (00°28’60”N, 51°04’59”W), 1 female (IEPA 634).— Municipality of Porto Grande: Pedreira River with the BR156 (00°42’13”N, 51°21’59”W), 07.VI.2002, col. I.M. Vieira, 35 males, 43 females and 21 females with eggs (IEPA826).— Municipality of Laranjal do Jari: Sustainable Development Reserve of Iratapuru River, Jari River (00°16’35.21”N, 53°06’24.48”W), 11.xi.2004, col. I.M. Vieira, 4 males and 6 females (IEPA568). Municipality of Pedra Branca: Sustainable Development Reserve of Iratapuru River, Cupixi River (00°35’07”N, 52°02’01.07”W), 2.viii.2005, cols. I.M. Vieira and D.C.C. Vieira, 1 juvenile (IEPA 915); National Park of Tumucumaque Mountains, streams that are tributaries of Anacuí River (01°50’41,29”N, 52°44’28.65”W), 9.iii.2006, cols. I.M. Vieira and D.C.C. Vieira, 9 males, 1 females and 2 females with eggs (IEPA 1159). Municipality of Laranjal do Jari: left bank of the Jari River (00°45’18.55”S, 52°30’13.16”W), 8.iv.2008, I.M. Vieira and D.C.C. Vieira, 3 specimens (IEPA 1369); island on the right margin of the Jari River, (00°47’54,85”S, 52°31’49,65”W), 4.xii.2009, I.M. Vieira and E.F. Araújo, 31 specimens (IEPA 1380) roda Macapá, Stream Parana, no information, 20.vii.1991, (INPA-CRU 001215) (Figure 1). Geographic distribution. Brazil (states of Amapá, Amazonas and Pará) and Colombia (Magalhães & Pereira 2007; Pileggi et al. 2013; Pimentel & Magalhães 2014; Valencia & Campos 2010 a; Vieira 2003, 2008). Distribution in Amapá state. Maruanum River, Curiaú River, Curralinho, stream of ripary florest in savanas regions, Pedreira River Jari River, Cupixi River and Anacuí River. Previous records. Pileggi et al. (2013); Pimentel & Magalhães (2014); Vieira (2003, 2008). Ecological notes. Species found in aquatic macrophytes, and in streams of clear, transparent water. Remarks. The specimens found here are morphologically similar to descriptions of Kensley & Walker (1982); Melo (2003) and Pimentel & Magalhães (2014)., Published as part of Vieira, Inacia Maria, Silva, Luiz Maurício Abdon, Almeida, Alini Gomes Santiago De, Almeida, Danilo Pelaes De, Silva-Júnior, Orleno Marques & Tavares-Dias, Marcos, 2022, Diversity, distribution and new records of freshwater and estuarine shrimp in the state of Amapá, eastern Brazilian Amazon region, pp. 41-71 in Zootaxa 5178 (1) on pages 63-64, DOI: 10.11646/zootaxa.5178.1.3, http://zenodo.org/record/7021864, {"references":["Kensley, B. & Walker, I. (1982) Palaemonid shrimps from the Amazon basin, Brazil (Crustacea, Decapoda, Natantia). Smithsonian Contributions to Zoology, Washington, 362, 1 - 28.","Magalhaes, C. & Pereira, G. (2007) Assessment of the decapod crustacean diversity in the Guayana Shield region aiming at conservation decisions. Biota Neotropica, 7 (2), 111 - 124. Available from: http: // www. biotaneotropica. org. br / v 7 n 2 / pt / abstr act? article + bn 02007022007 (accessed 3 November 2019) https: // doi. org / 10.1590 / S 1676 - 06032007000200013","Pileggi, L. G., Magalhaes, C., Bond-Buckup, G. & Mantelatto, F. L. (2013) New records and extension of the known distribution of some freshwater shrimps in Brazil. Revista Mexicana de Biodiversidad, 84 (2), 563 - 574. https: // doi. org / 10.7550 / rmb. 30504","Pimentel, F. R. & Magalhaes, C. (2014) Palaemonidae, Euryrhynchidae, and Sergestidae (Crustacea: Decapoda): Records of native species from the states of Amapa and Para, Brazil, with maps of geographic distribution. Check List, 10 (6), 1300 - 1315. https: // doi. org / 10.15560 / 10.6.1300","Valencia, D. M. & Campos, R. (2010) Freshwater shrimps of the Colombian tributaries of the Amazon and Orinoco rivers (Palaemonidae, Euryrhynchidae, Sergestidae). Caldasia, 32 (1), 221 - 234.","Vieira, I. M. (2003) Diversidade de crustaceos das ressacas da Lagoa dos Indios, Tacaca e APA do Curiau. In: Takiyama, L. R. & Silva, A. Q. da (Orgs.) Diagnostico das Ressacas do Estado do Amapa: Bacias do Igarape da Fortaleza e Rio Curiau. CPAQ / IEPA, DGEO / SEMA, Macapa, pp. 53 - 62.","Vieira, I. M. (2008) Inventarios rapidos da fauna de crustaceos do Parque Nacional Montanhas do Tumucumaque: Expedicoes I a V. In: Bernard, F. (Ed.), Inventarios Biologicos Rapidos no Parque Nacional Montanhas do Tumucumaque, Amapa, Brasil. RAP Bulletin of Biologica, 2008, pp. 66 - 71.","Melo, G. A. S. (2003) Familias Atyidae, Palaemonidae e Sergestidae. In: Melo, G. A. S. (Ed.), Manual de identificacao dos Crustacea Decapoda de agua doce do Brasil. Editora Loyola, Sao Paulo, pp. 289 - 415."]}

Macrobrachium olfersii (Wiegmann, 1836) Examined material. Municipality of Amapá: District of Sucuriju, estuary of the Sucuriju River (01°40’35.7”N, 49°55’53.92W), xi.1997, I.M. Vieira and O.M. Costa, 12 females and 2 juveniles (IEPA 173); Sucuriju River (1°41’05.14”N 49°57’46.80”W), xi.1996,, I.M. Vieira and O.M. Costa, 2 females with eggs (IEPA 244); (1°41’05.14”N 49°57’46.80”W), xi.1997, I.M. Vieira, J.C. de Oliveira and O.M. Costa, 1 female with eggs (IEPA 246); (01°40’35.7”N, 49°55’53.92”W), 18.iv.2001, I.M. Vieira, J.C. de Oliveira and O.M. Costa, 2 females (IEPA 262); Sucuriju River (01°40’27.53”N, 49°55’42.70”W), 24.x.2004, I.M. Vieira, 6 males, 11 females and 6 females with eggs (IEPA 786).— Municipality of Ferreira Gomes: Davi River (00°28’60”N, 51°04’59”W), 7.vi.2002, I.M. Vieira, O.A.Alencar and O.M. Costa, 2 female and 1female with eggs (IEPA 351); stream(00°28’60”N, 51°04’59”W), 7.vi.2002, I.M. Vieira, O.A.Alencar and O.M. Costa, 2 males and 5 females (IEPA 354).— Municipality of Oiapoque: National Park of Tumucumaque Mountains, Anotaié River (3°08’53”N 52°01’29”W), 5.IX.2005, I.M. Vieira and D.C.C. Vieira, 3 males (IEPA 819); waterfall on the river Anotaié (3°12’58”N, 52°01’11”W), 10.ix.2005, I.M. Vieira and D.C.C. Vieira, 7 males and 1 female (IEPA 820); (3°12’58”N, 52°01’11”W), 11.ix.2005, I.M. Vieira and D.C.C. Vieira, 3 males and 2 females (IEPA 951); Anotaié River (3°12’49”N 52°00’56”W), 13.ix.2005, I.M. Vieira and D.C.C. Vieira, 2 males (IEPA 957); Anotaié River (3°14’31”N 52°01’01”W), 6.ix.2005, I.M. Vieira and D.C.C. Vieira, 3 males (IEPA 1156); idem, 1 male (IEPA 1223); Waterfall Grande, 26.viii.2002, C. Magalhães (INPA-CRU 001073); Waterfall Grande, 25.viii.2002, C. Magalhães (INPA-CRU 001077); Waterfall Grande, 25.viii.2002, C. Magalhães (INPA-CRU 001078); Amapá Grande River, Waterfall Grande, 00/09/2002, no information (INPA-CRU 001103) (Figure 3). Geographic distribution. North Carolina, Florida, Texas, Central America, Colombia, Venezuela, Suriname and French Guyana and Brazil (states of Pará, Piauí, Ceará, Rio Grande do Norte, Pernambuco, Alagoas, Sergipe, Bahia, Minas Gerais, Espírito Santo, Rio de Janeiro, São Paulo, Paraná, Santa Catarina and Rio Grande do Sul) (Gomes-Corrêa 1977; Ferreira et al. 2010; Holthuis 1952; Melo 2003; Pimentel & Magalhães 2014); Distribution in Amapá state. Basins of the rivers Sucuriju, Davi and Anotaié. Previous records. Pimentel & Magalhães (2014). Ecological notes. Inhabits rivers with strong turbulence, under rocks. Remarks. The morphological characters of the specimens evaluated in this study correspond to the descriptions of Melo (2003)., Published as part of Vieira, Inacia Maria, Silva, Luiz Maurício Abdon, Almeida, Alini Gomes Santiago De, Almeida, Danilo Pelaes De, Silva-Júnior, Orleno Marques & Tavares-Dias, Marcos, 2022, Diversity, distribution and new records of freshwater and estuarine shrimp in the state of Amapá, eastern Brazilian Amazon region, pp. 41-71 in Zootaxa 5178 (1) on pages 56-57, DOI: 10.11646/zootaxa.5178.1.3, http://zenodo.org/record/7021864, {"references":["Gomes-Correa, M. M. (1977) Palemonideos do Brasil (Crustacea-Decapoda - Natantia). Dissertacao de Mestrado. Universidade do Rio de Janeiro, Rio de Janeiro, 191 pp. https: // doi. org / 10.1590 / S 0044 - 59672003000400013","Ferreira, R. S., Vieira, R. R. R. & D'Incao, F. (2010) The marine and estuarine shrimps of the Palaemoninae (Crustacea: Decapoda: Caridea) from Brazil. Zootaxa, 2606 (1), 1 - 24. https: // doi. org / 10.11646 / zootaxa. 2606.1.1","Holthuis, L. B. (1952) A general revision of the Palaemonidae (Crustacea DecapodA Natantia) of the Americas. II. The subfamily Palaemonidae. Occasional Papers of the Allan Hancock Foundation, Los Angeles, 12, 1 - 395.","Melo, G. A. S. (2003) Familias Atyidae, Palaemonidae e Sergestidae. In: Melo, G. A. S. (Ed.), Manual de identificacao dos Crustacea Decapoda de agua doce do Brasil. Editora Loyola, Sao Paulo, pp. 289 - 415.","Pimentel, F. R. & Magalhaes, C. (2014) Palaemonidae, Euryrhynchidae, and Sergestidae (Crustacea: Decapoda): Records of native species from the states of Amapa and Para, Brazil, with maps of geographic distribution. Check List, 10 (6), 1300 - 1315. https: // doi. org / 10.15560 / 10.6.1300"]}

Nematopalaemon schmitti (Holthius, 1950) Examined material. Municipality of Amapá: Ecological Station of Maracá-Jipioca, Stream Inferno (02°05’47.8”N, 50°29’51.62”W), 25.xi.1995, J.Cardoso and H.P. Belo, 2males, 18 females (IEPA 59); Stream Inferno (02°05’47.8”N, 50°29’51.62”W), 26.xi.1995, J.Cardoso and H.P. Belo, 34 males, 110 females and 19 females with eggs (IEPA 60); Stream Inferno (02°05’47.8”N, 50°29’51.62”W), 29.xi1995, I.M. Vieira, 50 males 179 females and 19 females with eggs (IEPA 61); (02°05’47.8”N, 50°29’51.62”W), 26.xi.1995, J. Cardoso, H.P. Belo and I.M. Vieira, 2 males and 4 females (IEPA 84); District of Sucuriju, Stream Piratuba (01°40’17.0”N, 49°55’00.06”W), 26.ix.1996, O.M. Costa, I.M. Vieira and H.P. Belo, 5 males (IEPA 114); Stream Piratuba (01°40’17.0”N, 49°55’00.06”W), xi.1996, O.M. Costa and H.P. Belo, 5 males and 3 females (IEPA 118); Sucuriju River (01°40’35,7”N, 49°55’53,92W), ix.1997, O.M. Costa and H.P. BELO, 2 males and 21 females (IEPA 143), x.1997, O.M. Costa and H.P. BELO, 2 females (IEPA148); (01°40’35.7”N, 49°55’53.92W), iii.1998, I.M. Vieira, O.M. Costa and A.C. Souza, 1 male (IEPA 163); Sucuriju River (01°40’23.9”N, 49°54” 56.7W), 22.vii.2002, I.M. Vieira and O.M. Costa, 1 male and 13 females (IEPA 367); Sucuriju River (01°40’23.9”N, 49°54”56.7W), 27.ii.2004, I.M. Vieira, 3 males and 5 females (IEPA 493) (Figure 2). Geographic distribution. Venezuela, Suriname, French Guyana and Brazil (states of Amapá, Pará, Maranhão, Piauí, Ceará, Rio Grande do Norte, Paraíba, Pernambuco, Alagoas, Sergipe, Bahia, Espírito Santo, Rio de Janeiro, São Paulo, Santa Catarina and Rio Grande do Sul) (Cervigon et al. 1992); Ferreira et al. 2010; (Rodriguez 1982); Delgado et al. 1997. Distribution in Amapá state. Estuary of the Sucuriju river and Maracá-Jipioca island. Previous records. Ferreira et al. (2010) Ecological notes. Inhabits marine and estuarine environments, with muddy and/or sandy bottoms, from 5 to 75 m in depth (Cervigon et al. 1992). Remarks. The species is caught in industrial trawl fisheries or with manual nets, and it has economic importance to Guyana, French Guiana and Suriname (Cervigon et al. 1992), Published as part of Vieira, Inacia Maria, Silva, Luiz Maurício Abdon, Almeida, Alini Gomes Santiago De, Almeida, Danilo Pelaes De, Silva-Júnior, Orleno Marques & Tavares-Dias, Marcos, 2022, Diversity, distribution and new records of freshwater and estuarine shrimp in the state of Amapá, eastern Brazilian Amazon region, pp. 41-71 in Zootaxa 5178 (1) on page 60, DOI: 10.11646/zootaxa.5178.1.3, http://zenodo.org/record/7021864, {"references":["Cervigon, F., Cipriani, R., Fischer, W., Garibaldi, L., Hendrickx, M., Marquez, R., Poutiers, J. M., Robaina, G. & Rodriguez, B. (1992) Guia de campo de las especies comerciais marinas y de aguas salobres de la costa setentrional de Sur America. Food and Agriculture Organization of the United Nations, Roma, 513 pp.","Ferreira, R. S., Vieira, R. R. R. & D'Incao, F. (2010) The marine and estuarine shrimps of the Palaemoninae (Crustacea: Decapoda: Caridea) from Brazil. Zootaxa, 2606 (1), 1 - 24. https: // doi. org / 10.11646 / zootaxa. 2606.1.1","Rodriguez, G. (1982) Freshwater shrimps (Crustacea, Decapoda, Natantia) of the Orinoco basin and the Venezuelan Guayana. Journal of Crustacean Biology, 2 (3), 378 - 391. https: // doi. org / 10.2307 / 1548054","Delgado, J. G., Hector, J., Severeyn, A. R. G., Reverol, Y. M. & J., J. E. (1997) Camarones dulceacuicolas y estuarinos de Venezuela (Atyidae, Palaemonidae): nuevos registros para los Estados Zulla y Falcon. Boletin del Centro de Investigaciones Biologicas, 31 (1), 11 - 32."]}

Macrobrachium brasiliense Heller, 1862 Examined material. Municipality of Ferreira Gomes: dam at km 54, Extremo Norte (00°28’60”N, 51°04’59”W), 06.vi.2002, coll. I.M. Vieira, 06 males and 18 females (IEPA 333); Floresta Nacional do Amapá (Amapá National Forest,) Stream Braço (01°18’07”N; 51°35’17”W), 24.vii.2004, coll. I.M. Vieira, 01 male and 15 females (IEPA 537); idem, 08.viii.2004, I.M. Vieira, 04 males and 30 females (IEPA 551); idem, 11.viii.2004, coll. I.M. Vieira, 15 specimens (IEPA 559); idem, 11.viii.2004, I.M. Vieira, 02 females (IEPA 564); 14.viii.2004, colls. M. Vieira and J.O. Cardoso, 02 male and 01 female (IEPA 610); Floresta Nacional do Amapá, Stream Santo Antônio, pond in açaí occurrence area (Euterpe oleracea Mart.) (01°06’37”N, 51°53’37”W), 07.iii.2005, colls. I.M. Vieira and D.C.C. Vieira, 01 male (IEPA 780); idem, 22.vii.2002, colls. I.M. Vieira and D.C.C. Vieira, 59 males, 03 females and 01e female with eggs (IEPA 787); 13.iii.2005, colls. I.M. Vieira and D.C.C. Vieira, 13 males and 03 females (IEPA 793), stream with transparent water, bottom with sand and small black stones, with strong current (1°06’39”N, 51°53’18”W) 07.iii.2005, I.M. Vieira and D.C.C. Vieira, 05 males (IEPA 800).— Municipality of Laranjal do Jari: Sustainable Development Reserve of the Iratapuru River, Jari River (00°16’35.21”N, 53°06’24.48”W), 12.xi.2004, I.M. Vieira and E.A. Oliveira, 72 males and 10 females (IEPA 580); stream left bank of the Jari River (00°16’35.21”N, 53°06’24.48”W), 21.xi.2004, I.M. Vieira and E.A. Oliveira, 5 males and 4 females (IEPA 620); idem, 15.xi.2004, I.M. Vieira and, 03 males, 12 females and 1 juvenile (IEPA 1065); right bank of the river Jari (0°51’47”S, 52°31’26”W), 27.x.2007, I.M. Vieira, 31 males and 11 females (IEPA 1169); stream Baliza (0°18’36”S, 52°26’24”W), 12.v.2005, I.M. Vieira and D.C.C. Vieira, 1 male (IEPA 1272); idem, 10.v.2005, I.M. Vieira and D.C.C. Vieira, 1 female (IEPA 1325); National Park of Tumucumaque Mountains, Mapaoni River, transparent water, under leaf litter bordering the river (02°11’36”N, 54°35’15”W), 11.i.2005, I.M. Vieira and E.A. Oliveira, 1 male (IEPA 712); idem, 05.i.2005, I.M. Vieira and E.A. Oliveira, 7 males, 03 females, 04 juvenis and 2 females with eggs (IEPA 1187). Municipality of Serra do Navio: National Park of Tumucumaque Mountains, confluence of rivers Amapari and Anacuí, with small waterfalls, rocks on the river bed, strong current (01°35’45”N, 52°29’32”W), idem previous collection, 22.ix.2004, I.M. Vieira and Z. A. de Paiva, 1 male and 1 female (IEPA 657); idem, Stream with rocky bottom (1°36’13”N, 52°29’52”W), 17.ix.2004, I.M. Vieira, C.S. Gama, D. R. J. Cardoso and J. M. Pereira, 05 males, 05 females and 01 female with eggs (IEPA 664); idem, stream tributary of Amapari River, black water, sandy bottom, shallow and with leaves in decomposition (1°36’13”N, 52°29’36”W), 20.ix.2004, I.M. Vieira and E.A. Oliveira, 3 males and 6 females (IEPA 684); idem, igarapé (1°35’43”N, 52°29’18”W), 24.ix.2004, I.M. Vieira and E.A. Oliveira, 1 male and 4 females (IEPA686), Anacuí River (01°50’41.29”N, 52°44’28.65”W), 02.iii.2006, I.M. Vieira and D.C.C. Vieira, 9 males (IEPA1039).— Municipality of Pedra Branca do Amapari: stream (01°08’53.6”N, 52°26’43.7”W), 01.ix.2002, I.M. Vieira, 5 males, 13 females, 31 juveniles (IEPA 828); Sustainable Development Reserve of the Iratapuru River, tributary of Cupixi River, swamp (0°34’09”N, 52°19’30”W), 29.vii.2005, I.M. Vieira and D.C.C.Vieira, 1female (IEPA 899), idem, 02.viii.2005, I.M. Vieira and D.C.C. Vieira, 1female (IEPA 914); Cupixi River (00º34’45”N, 52º19’21”W), 01.viii.2005, I.M. Vieira and D.C.C. Vieira, 1male (IEPA 905); tributary stream of the Cupixi River (0º35’00”N, 52º19’28”W), 6.viii.2005, I.M. Vieira and D.C.C. Vieira, 1 female (IEPA 936).— Municipality of Oiapoque: National Park of Tumucumaque Mountains, Anotaié River (3°07’27”N, 52°01’28”W), 5.ix.200 5, I.M. Vieira and D.C.C. Vieira, 12 males and 17 females (IEPA 943); tributary of the Anotaié River, 5000 m trail (3°12’47”N, 52°02’22”W), 9.ix.2005, I.M. Vieira and D.C.C. Vieira, 3 males and 9 females (IEPA 949); (3°29’ 09”N 52°19’14”W), 12.ix.2005, I.M. Vieira and D.C.C. Vieira, 1 male and 12 females (IEPA 954); Anotaíé River (l°29’51,55”N, 52°18’0,66”W), 13.ix.2005, I.M. Vieira and D.C.C. Vieira, 1 male (IEPA 955); idem, 13.ix.2005, I.M. Vieira and D.C.C. Vieira, 1 male (IEPA 956); idem, 13.ix.2005, I.M. Vieira and D.C.C. Vieira, 1 male (IEPA 958).— Municipality of Calçoene: National Park of Tumucumaque Mountains, Mutum River (1°23’13.83”N, 51°55’39.05”W), 6.xi.2005, I.M. Vieira and D.C.C. Vieira, 5 males and 23 females (IEPA 1010); Mutum River (1°23’13,83”N, 51°55’39,05”W), 2.xi.2005, I.M. Vieira and D.C.C. Vieira, 6 males and 11 females (IEPA 1025); tributary of Mutum River, left margin (1°23’51”N, 51°56’04”W) 6.xi.2005, I.M. Vieira and D.C.C. Vieira, 1 specimen (IEPA 1055); tributary stream of the Mutum River (1°23’51”N, 51°56’04”W), 2 males and 3 females (IEPA 1072).— Municipality of Mazagão: Extractive reserve of Rio Cajari, Stream Caroço (00°23’21.8”S, 52°03’13.7”W), 7.vii.2013, I.M. Vieira, 4 males, 1 females and 1 female with eggs (IEPA 1634); Araguari River, Marcirio upstream of Porto Grande, 18.viii.1992, colls. C. Magalhães and M. Jeju (INPA-CRU 001070); BR- 156 furo do Henrique, 27.viii.1992, coll. C. Magalhães (INPA-CRU 001072); Araguari River, stream in waterfall Capivara, 20.viii.1992, coll. C. Magalhães (INPA-CRU 001074); rio Amapá Grande, 26.viii.1992 (INPA-CRU 001076); Streamigarapé Munguba, 23.iii.1991 (INPA-CRU 001207); municipality of Serra do Navio, Stream Água Branca, 22.iii.1991 (INPA-CRU 001211) (Figure 4). Geographic distribution. Colombia, Venezuela, Ecuador, Peru, Suriname, Guyana, French Guyana and Brazil (states of Amapá, Pará, Amazonas, Maranhão, Bahia, Mato Grosso, Mato Grosso do Sul, Goiás, Minas Gerais, Roraima, São Paulo and Paraná). (Holthuis 1952; Pileggi et al. 2013; Pimentel & Magalhães 2014) Distribution in Amapá state. Streams Braço, Água Branca, Munguba and Santo Antônio, rivers Jari, Araguari, Mapaoni, Amapari, Anacuí, Cupixi, Anotaié, Mutum, Amapá Grande, Davi and Tracajatuba. Previous records. Melo (2003); Pimentel & Magalhães (2014). Ecological notes. In the state of Amapá, it occurs in clear, transparent waters, in ponds, streams and rivers with waterfalls where there is strong current. Remarks. The morphology of the specimens can be verified in Holthuis (1952); Melo (2003)., Published as part of Vieira, Inacia Maria, Silva, Luiz Maurício Abdon, Almeida, Alini Gomes Santiago De, Almeida, Danilo Pelaes De, Silva-Júnior, Orleno Marques & Tavares-Dias, Marcos, 2022, Diversity, distribution and new records of freshwater and estuarine shrimp in the state of Amapá, eastern Brazilian Amazon region, pp. 41-71 in Zootaxa 5178 (1) on pages 52-53, DOI: 10.11646/zootaxa.5178.1.3, http://zenodo.org/record/7021864, {"references":["Holthuis, L. B. (1952) A general revision of the Palaemonidae (Crustacea DecapodA Natantia) of the Americas. II. The subfamily Palaemonidae. Occasional Papers of the Allan Hancock Foundation, Los Angeles, 12, 1 - 395.","Pileggi, L. G., Magalhaes, C., Bond-Buckup, G. & Mantelatto, F. L. (2013) New records and extension of the known distribution of some freshwater shrimps in Brazil. Revista Mexicana de Biodiversidad, 84 (2), 563 - 574. https: // doi. org / 10.7550 / rmb. 30504","Pimentel, F. R. & Magalhaes, C. (2014) Palaemonidae, Euryrhynchidae, and Sergestidae (Crustacea: Decapoda): Records of native species from the states of Amapa and Para, Brazil, with maps of geographic distribution. Check List, 10 (6), 1300 - 1315. https: // doi. org / 10.15560 / 10.6.1300","Melo, G. A. S. (2003) Familias Atyidae, Palaemonidae e Sergestidae. In: Melo, G. A. S. (Ed.), Manual de identificacao dos Crustacea Decapoda de agua doce do Brasil. Editora Loyola, Sao Paulo, pp. 289 - 415."]}

Macrobrachium inpa Kensley & Walker, 1982 Examined material. Municipality of Ferreira Gomes: Stream Braço, tributary of Falsino River, Floresta Nacional do Amapá (Amapá National Forest) (01°17’43”N, 51°36’52”W), 8.vii.2004, I.M. Vieira, 8 males (IEPA 561).— Municipality of Pedra Branca do Amapari: Sustainable Development Reserve of the Iratapuru River, Cupixi River (00°34’45.8”N, 52°19’08.3”W), 25.vii.2005, I.M. Vieira and D.C.C. Vieira, 10 males and 8 females (IEPA 883).— Municipality of Laranjal do Jari: Cajari River Extractive Reserve, Stream Caroço, very reduced, with currentess and rocky bottom (00°23’21.8”S, 52°03’13.7”W), 8.vii.2013, I.M. Vieira and K.J.G. Corrêa, 4 males, 1 female and 1 female with eggs (IEPA 1624); Waterfall of Santo Antônio, Jari River (00°38’42.47”S, 52°30’27.95W), 3.xii.2009, I.M. Vieira, 4 males and 26 females (IEPA 1244); Waterfall of Santo Antônio, Jari River (00°38’42.47”S, 52°30’27.95W), 17.vi.2010, I.M. Vieira and E.F. Araújo, 5 males and 29 females (IEPA 1390) (Figura 4). Geographic distribution. Costa Rica, Venezuela, Trinidad, Guyana, French Guyana, Suriname, Bolivia and Brazil (states of Amapá, Amazonas and Pará) (Chevalier et al. 2020; Kensley & Walker 1982; Melo 2003). Distribution in Amapá state. Basins of the rivers Falsino (stream of Braço), Jari (Waterfall Santo Antônio) and Cupixi, and stream Caroço. Previous records. Pimentel & Magalhães (2014) Ecological notes. Collected in rivers with strong turbulence and in waterfalls. Remarks. The morphological characters of the specimens evaluated in this study correspond to the descriptions of Melo (2003)., Published as part of Vieira, Inacia Maria, Silva, Luiz Maurício Abdon, Almeida, Alini Gomes Santiago De, Almeida, Danilo Pelaes De, Silva-Júnior, Orleno Marques & Tavares-Dias, Marcos, 2022, Diversity, distribution and new records of freshwater and estuarine shrimp in the state of Amapá, eastern Brazilian Amazon region, pp. 41-71 in Zootaxa 5178 (1) on page 56, DOI: 10.11646/zootaxa.5178.1.3, http://zenodo.org/record/7021864, {"references":["Kensley, B. & Walker, I. (1982) Palaemonid shrimps from the Amazon basin, Brazil (Crustacea, Decapoda, Natantia). Smithsonian Contributions to Zoology, Washington, 362, 1 - 28.","Chevalier, J., Guyane, W. & Onikha, S. C. (2020) Les Crevettes de la reserve naturelle regionale Tresor Rapport de mission et perspectives. Available from: https: // docplayer. fr / 215573913 - Les-crevettes-de-la-reserve-naturelle-regionale-tresorrapport-de-mission-et-perspectives-johan-chevalier-wano-guyane-simon-clavier-onikha. html (accessed 22 April 2021)","Melo, G. A. S. (2003) Familias Atyidae, Palaemonidae e Sergestidae. In: Melo, G. A. S. (Ed.), Manual de identificacao dos Crustacea Decapoda de agua doce do Brasil. Editora Loyola, Sao Paulo, pp. 289 - 415.","Pimentel, F. R. & Magalhaes, C. (2014) Palaemonidae, Euryrhynchidae, and Sergestidae (Crustacea: Decapoda): Records of native species from the states of Amapa and Para, Brazil, with maps of geographic distribution. Check List, 10 (6), 1300 - 1315. https: // doi. org / 10.15560 / 10.6.1300"]}

Leander tenuicornis (Say, 1818 [in Say, 1817-1818) Examined material. Municipality of Calçoene: Mouth of Cassiporé River, State of Amapá (03°52’53,40”N, 51°08’36,03”W), 1 male and 1 female (IEPA1625) (Figure 2). Geographic distribution. Western Atlantic Ocean - Canada, USA (Massachusetts, Virginia, Carolina, Florida, Louisiana and Texas), Bermudas, Mexico, Panama, Bahamas, Cuba, Jamaica, Porto Rico, Island Virginia, Colombia, Venezuela, Brazil (states of Maranhão, Piauí, Ceará, Rio Grande do Norte, Paraíba, Pernambuco [Atol das Rocas], Alagoas, Sergipe, Bahia, Espírito Santo, Rio de Janeiro and São Paulo), Malvinas Islands. Eastern Atlantic Ocean: Azores archipelago, Portugal. Mediterranean- Spain, France, Italy and Libya. Pacific and Indian Ocean - Red Sea, India, Japan, Papua New Guinea, Australia and New Zealand (Ferreira et al. 2010; Herrera-Barquín et al. 2018; Ramos-Porto 1985). Distribution in Amapá state. Estuary of the Cassiporé River. Previous records. present study Ecological notes. Species found in shallow waters, up to 72 m deep, on gravel, sandy bottoms with algae meadows and/or phanerogams (Ramos-Porto 1985). In the Cassiporé River estuary, it was found in mangrove areas and river with very mud. Remarks. Leander tenuicornis presents sexual dimorphism in relation to the shape of the face, in the female the rostrum is wider in the ventral part (Ferreira et al. 2010)., Published as part of Vieira, Inacia Maria, Silva, Luiz Maurício Abdon, Almeida, Alini Gomes Santiago De, Almeida, Danilo Pelaes De, Silva-Júnior, Orleno Marques & Tavares-Dias, Marcos, 2022, Diversity, distribution and new records of freshwater and estuarine shrimp in the state of Amapá, eastern Brazilian Amazon region, pp. 41-71 in Zootaxa 5178 (1) on page 64, DOI: 10.11646/zootaxa.5178.1.3, http://zenodo.org/record/7021864, {"references":["Ferreira, R. S., Vieira, R. R. R. & D'Incao, F. (2010) The marine and estuarine shrimps of the Palaemoninae (Crustacea: Decapoda: Caridea) from Brazil. Zootaxa, 2606 (1), 1 - 24. https: // doi. org / 10.11646 / zootaxa. 2606.1.1","Herrera-Barquin, H., Leija-Tristan, A. & Favela-Lara, S. (2018) Updated checklist of estuarine caridean shrimps (Decapoda: Caridea) from the southern region of Laguna Madre, Tamaulipas, Mexico, with new records and a key for taxonomic identification. Check List, 14, 479 - 494. https: // doi. org / 10.15560 / 14.2.479","Ramos-Porto, M. (1985) Revisao das especies do genero Leander E. Desmarest que ocorrem no litoral brasileiro. Tropical Oceanography 19 (1), 1 - 11. https: // doi. org / 10.5914 / tropocean. v 19 i 1.2614"]}

Macrobrachium acanthurus Wiegmann, 1836 Examined material. Municipality ofAmapá: District of Sucuriju, village of Sucuriju (01°40’35,7”N, 49°55’53,92W), 18.iv.2001, I.M. Vieira and O.M. Costa, 2 males and one female (IEPA 260); estuary of the Sucuriju River (01°40’23,9”N, 49°54’56,7”W), 22.ii.2002, I.M. Vieira and O.M. Costa, 2 males and 1 female with eggs (IEPA 488); 2 male (IEPA 490); estuary of the Sucuriju River (01°40’09,18”N, 49°55’07,34”W), 01.v.2004, I.M. Vieira and C.S. Gama, 1 male (IEPA 505).— Municipality of Macapá: stream Aterro, streams in gallery forests, in savanna (00°15’29”N, 51°03’39”W), 05.vi.2002, I.M. Vieira, 1 female (IEPA 329).— Municipality of Calçoene: waterfall of Henrique, Flexal River (01°45’56,5”N, 51°58’48,0”W), 30.vii.2003, C.S. Gama and D.A. Halboth, 1 specimen (IEPA 494) (Figure 3). Geographic distribution. Western Atlantic Ocean: USA (North Carolina, South Carolina, Georgia, Florida, Alabama, Mississippi, Louisiana, Texas), Mexico, Honduras, Nicaragua, Panama, Bahamas, Cuba, Jamaica, Haiti, Dominican Republic, Puerto Rico, Islands Virgins, Colombia, Venezuela, Suriname, Brazil (state of Pará, Maranhão, Piauí, Ceará, Rio Grande do Norte, Paraíba, Pernambuco, Alagoas, Sergipe, Bahia, Espírito Santo, Rio de Janeiro, São Paulo, Paraná, Santa Catarina and Rio Grande do Sul) (Bond-buckup & Buckup 1989; Coelho et al. 2006; Coelho & Ramos-Porto 1984; Ferreira et al. 2010; Holthuis 1952; Melo 2003; Bond-Buckup 1989; Delgado et al. 1997; Bowles et al. 2000; Barros & Pimentel 2001). Distribution in Amapá state. Sucuriju River Basin, Flexal River and streams in gallery forests, savannas. Previous records. Pimentel & Magalhães (2014 ) Ecological notes. Collected in clear water streams and estuaries, brackish waters, in muddy substrate, and in the ebb period it is found in tide pools (Coelho et al. 2006) Remarks. The specimens analyzed in this study correspond to the descriptions of Holthuis (1952) and Melo (2003)., Published as part of Vieira, Inacia Maria, Silva, Luiz Maurício Abdon, Almeida, Alini Gomes Santiago De, Almeida, Danilo Pelaes De, Silva-Júnior, Orleno Marques & Tavares-Dias, Marcos, 2022, Diversity, distribution and new records of freshwater and estuarine shrimp in the state of Amapá, eastern Brazilian Amazon region, pp. 41-71 in Zootaxa 5178 (1) on pages 49-50, DOI: 10.11646/zootaxa.5178.1.3, http://zenodo.org/record/7021864, {"references":["Bond-Buckup, G. & Buckup, L. (1989) Os Palaemonidae de aguas continentais do Brasil meridional (Crustacea, Decapoda). Revista Brasileira de Biologia, 49 (4), 883 - 896.","Coelho, P., Almeida, A., Fidelis, J., Bezerra, L. & Giraldes, B. (2006) Diversity and distribution of the marine and estuarine shrimps (Dendrobranchiata, Stenopodidea and Caridea) from North and Northeast Brazil. Zootaxa, 1221 (1), 41 - 62. https: // doi. org / 10.11646 / zootaxa. 1221.1.5","Coelho, P. A. & Ramos-Porto, M. (1984) Camaroes de agua doce do Brasil: distribuicao geografica. Revista Brasileira de Zoologia, 2, 405 - 410. https: // doi. org / 10.1590 / S 0101 - 81751984000200014","Ferreira, R. S., Vieira, R. R. R. & D'Incao, F. (2010) The marine and estuarine shrimps of the Palaemoninae (Crustacea: Decapoda: Caridea) from Brazil. Zootaxa, 2606 (1), 1 - 24. https: // doi. org / 10.11646 / zootaxa. 2606.1.1","Holthuis, L. B. (1952) A general revision of the Palaemonidae (Crustacea DecapodA Natantia) of the Americas. II. The subfamily Palaemonidae. Occasional Papers of the Allan Hancock Foundation, Los Angeles, 12, 1 - 395.","Melo, G. A. S. (2003) Familias Atyidae, Palaemonidae e Sergestidae. In: Melo, G. A. S. (Ed.), Manual de identificacao dos Crustacea Decapoda de agua doce do Brasil. Editora Loyola, Sao Paulo, pp. 289 - 415.","Delgado, J. G., Hector, J., Severeyn, A. R. G., Reverol, Y. M. & J., J. E. (1997) Camarones dulceacuicolas y estuarinos de Venezuela (Atyidae, Palaemonidae): nuevos registros para los Estados Zulla y Falcon. Boletin del Centro de Investigaciones Biologicas, 31 (1), 11 - 32.","Bowles, D. E., Aziz, K. & Knight, C. L. (2000) Macrobrachium (Decapoda: Caridea: Palaemonidae) in the contiguous United States: a review of the species and an assessment of threats to their survival. Journal of Crustacean Biology, 20 (1), 158 - 171. https: // doi. org / 10.1163 / 20021975 - 99990025","Barros, M. P. & Pimentel, F. R. (2001) Decapoda (Crustacea) do estado do Para, Brasil: lista preliminar das especies. Boletim do Museu Paraense Emilio Goeldi, Serie Zoologia, 17 (1), 15 - 41.","Pimentel, F. R. & Magalhaes, C. (2014) Palaemonidae, Euryrhynchidae, and Sergestidae (Crustacea: Decapoda): Records of native species from the states of Amapa and Para, Brazil, with maps of geographic distribution. Check List, 10 (6), 1300 - 1315. https: // doi. org / 10.15560 / 10.6.1300"]}

Macrobrachium amazonicum Heller, 1862 Examined material. Municipality of Pracuúba: Pracuúba Lake (1°44’03”N, 50°47’35”W), vii.1981, coll. M.A.S. Lima, 28 specimens (IEPA 07).— Municipality of Macapá: Fazendinha District, Amazon River, Cascalheira (00°03’18.89”S, 51°07’09.40”W), 25.v.1990, coll. J.C.S. Oliveira, 7 specimens (IEPA 12), idem, 25.v.1990, J.C.S. Oliveira, 4 male and three females (IEPA 21), idem, 06.v.1990, coll. J.C.S. Oliveira, 11 specimens (IEPA 20); Archipelago of Bailique, Stream Franco Grande (00°55’56.1”N, 50°02’04.3”W), 24.viii.1995, colls. J. Cardoso, N. Farripas and I.M. Vieira, 105 males, 280 females and 46 females with eggs (IEPA 42); idem, Stream (00°56’29.7”N, 50°00’49.4”W), 25.viii.1995, colls, J. Cardoso, N. Farripas and I.M. Vieira, 28 males, 66 females and 09 females with eggs (IEPA 43); idem, Stream Franco Grande (00° 57’39.3”N, 49°59’46.1”W), 31.viii.1995, colls. J. Cardoso, N. Farripas and I.M. Vieira, 47 males, 51 females and 02 females with eggs (IEPA 44); idem, Amazon River, Cubana (00°52’37,3”N, 50°08’56,6”W), 23.ix.2000, colls. I.M. Vieira, O.A. Alencar, O.M. Costa and D.A. Halboth, 07 males and 13 females (IEPA 226); at the same location as the previous collection, Stream Faustino (00°53’36.9”N, 50°11’01.9”W), 30.viii.1995, colls. L. Ramos, H.P. Belo, J. Cardoso, I.M. Vieira and N. Farripas, 328 specimens (IEPA 46); Amazon River, Cascalheira Mirim (00°03’03.76”S, 51°05’52.85”W), 23.IV.1996, colls. J. Cardoso, I.M. Vieira, O.M. Costa and H.P. Belo, 05 males, 30 females and 15 females with eggs (IEPA 132); Fazendinha Beach (00°03’03,76”S, 51°05’52,85”W), 14.vi.1996, colls. J. Cardoso, I.M. Vieira, O.M. Costa and H.P. Belo, 04 males and 24 females (IEPA 133); Wetland Tacacá (00°02’20.7”S, 51°05’35.2”W), 19.vii.2002, colls. O.A. Alencar, D. Filocreão, A.C.R. de Araújo, O.T.C. Arnaud, 01 male and 01 female (IEPA 392).— Municipality of Amapá: Mouth of Sucuriju River (01°40’17.0”N, 49°55’00.06”W), 26.ix.1996, O.M. Costa, H.P. Belo and I.M. Vieira, 01 male, 22 females and 03e females with eggs (IEPA 116); idem (01°40’35.7”N, 49°55’53.92”W), 18.iv.2001, I.M. Vieira, and O.M. Costa, 01 female (IEPA 261); idem (01°40’23.9”N, 49°54’56.7”W), 22.viii.2002, I.M. Vieira, and O.M. Costa, 08 females with eggs (IEPA 449); idem (01°40’04.21”N, 49°55’01.45”W), 04.v.2004, I.M. Vieira, 31 males and 73 females (IEPA 533); Piratuba Lake (01°41’35”N, 50°00’30.6”W), 02.v.2004, I.M. Vieira and C.S. Gama, 08 males and 129 females (IEPA 760). Municipality of Santana: Santana Island, Amazon River (00°05’13.84”S, 51°09’06.98”W), 14.iv.2000, I.M. Vieira, O.A. Alencar, O.M. Costa and J. Cardoso, 29 males, 25 females and 06 females with eggs (IEPA 211); idem, 14.iv.2000, I.M. Vieira, O.A. Alencar, O.M. Costa and J. Cardoso, 05 males, 39 females and 23 juveniles (IEPA 213); idem, I.M. Vieira, O.A. Alencar, O.M. Costa and J. Cardoso, 01 e males, 7 females and 22 juveniles (IEPA 249); idem, Recanto da Aldeia (00°05’43,58”S, 51°10’23,56”W), 19.ii.2012, A.G. Santiago and E.O. Galeno, 53 males, 32 females and 05 and females with eggs (IEPA 1549); idem previous collection, Dourado Lake (00°04’32.3”S, 51°09’44.4”W), 21.ii.2012, A.G. Santiago and E.O. Galeno, 15 males and 05 females (IEPA 1554); at the same location as the previous collection, Beach Encanto (00°03’51,63”S, 51°10’29,27”W), 20.xii.2012, A.G. Santiago and E.O. Galeno, 12 males and 11 females (IEPA 1556); idem coleta anterior, Beach Ponte (00°04’40,30”S, 51°08’27,51”W), 40 males, 16 females and 20 females with eggs (IEPA 1557); Matapi River (00°00’35.92”S, 51°12’09.76”W), 13.iv.2002, I.M. Vieira and C.S. Gama, 6 males, 20 females and 10 juveniles (IEPA 289), idem, 13.iv.2002, I.M. Vieira and C.S. Gama, 19 males, 42 females and 06 females with eggs (IEPA 293); Matapi River (00°00’55.93”S, 51°12’14,23”W), 13.iv.2002, I.M. Vieira and C.S. Gama, 02 males and 03 females (IEPA 430). Municipality of Cutias: Reserva Biológica do Lago Piratuba (Biological Reserve of Lake Piratuba), Araguari River, Tabaco (01°19’23”N, 50°16’44”W), 03.v.2004, I.M. Vieira and C.S. Gama, 20 males and 51 females (IEPA 535); Stream Jacaré (01°20’29.8”N, 50°14’41.6”W), 29.iv.2004, I.M. Vieira, 1 male and 13 female (IEPA 736); at the same location as the previous collection, Retiro Santa Margarida, Araguari River (01°19’50.9”N, 50°15’56.7”W), 29.iv.2004, I.M. Vieira, 2 males and 25 females (IEPA 758); Stream of Costa (01°19’26.6”N, 50°16’36.0”W), 26.iv.2004, I.M. Vieira, 08 males and 05 females (IEPA 769); Parazinho Biological Reserve (00°52’41”N, 49°59’29”W), 14.i.2006, I.M. Vieira, 411 males, 353 females, 3 juveniles and 35 females with eggs (IEPA1000).— Municipality of Calçoene: Beach of Goiabal, Mouth of Calçoene River (02°35’51.13”N, 50°50’43.13”W), 20.vi.2006, I.M. Vieira, 2 males and 01 female (IEPA 1226).— Municipality of Laranjal do Jari: Jari River (00°45’18.55”S, 52°30’13.16”W), 04.xii.2009, 01 female (IEPA 1374). Municipality Mazagão: Cajari River Extractive Reserve, Lower Cajari River (00°43’17.9”S, 51°40’40.5”W), 29.v.2014, I.M. Vieira and A.G. Santiago, 01 male and 02 females (IEPA 1605). Municipality of Ferreira Gomes: dam (00°28’60”N, 51°04’59”W), 06.vi.2002, I.M. Vieira, O.A. Alencar and O.M. Costa, four females (IEPA 332). Reserva Particular do Patrimônio Natural (Private Natural Heritage Reserve), stream (00°56’49.20”N, 51°14’49.71”W), 04.ii.2006, I.M. Vieira and D.C.C. Vieira, 15 males, 95 females and 03 females with eggs (IEPA 1663); stream (00°55’35”N, 51°15’45”W), 31.i.2006, I.M. Vieira and D.C.C. Vieira, 2 males and 4 females (IEPA 1670); represa (00°56’49.20”N, 51°14’49.71”W), 01.ii.2006, I.M. Vieira and D.C.C. Vieira, 04 males and 03 females (IEPA 1683); idem, stream (00°56’49.20”N, 51°14’49.71”W); 05/02/2006, I.M. Vieira and D.C.C. Vieira, 01 male and 18 females (IEPA 1686); Araguari River, Ferreira Gomes Hydroelectric Power Plant dam (0°51’33.51”N, 51°11’47.01”W), 21.i.2011, I.M. Vieira, 04 females, 05 juveniles and 01 female with eggs (IEPA 1787), Araguari River (0°53’55.56”N, 51°15’16.92”W), 24.ii.2012. I.M. Vieira, A.G. Santiago, E.O. Galeno and K.J.G. Corrêa, 2 males (IEPA 1792); Araguari River, Vista Alegre, Biological Reserve of Lake Piratuba, 3 immature females, 1 immature male, 7 females adults, 6 male adults, 15.viii.1992, colls. C. Magalhães, (INPA-CRU 001059); Amapá Grande River, Cachoeira Grande, 1 fêmea, 26.viii.1992, coll. C. Magalhães (INPA-CRU 001061) (Figure 3). Geographic distribution. It has a wide distribution, ranging from large hydrographic basins such as the Amazon and Paraná-Paraguay River, to smaller coastal basins in different phytophysiognomic domains. Occur in Venezuela, Guyana, Suriname, French Guyana, Peru, Brazil (states of Amapá, Amazonas, Pará, Maranhão, Piauí, Ceará, Rio Grande do Norte, Paraíba, Pernambuco and Mato Grosso do Sul), Argentina, Bolivia, Paraguay, Ecuador and Peru (García-Dávila & Magalhães 2003; Holthuis 1952; Kensley & Walker 1982; Melo 2003; Pileggi et al. 2013; Pimentel & Magalhães 2014; Santos et al. 2018; Gomes-Corrêa 1977; Rodriguez 1982; Ramos-Porto & Coelho, 1990; Pettovello 1996; Delgado et al., 1997;) Distribution in Amapá state. Basins of rivers Amazon, Faustino, Sucuriju, Matapi, Araguari, Stream Jacaré, Calçoene River and Jari River. Previous records. Melo (2003); Pileggi et al. (2013); Pimentel & Magalhães (2014) Ecological notes. Females have numerous eggs and are small, reach 150 mm in size, occur in white, black and clear waters, being abundant at the mouth of the Amazon River, where they form an important fishing resource for the state of Amapá. Remarks. The morphology of the specimens cited in this study is in accordance with the descriptions of Holthuis (1952); Kensley & Walker (1982); Melo (2003)., Published as part of Vieira, Inacia Maria, Silva, Luiz Maurício Abdon, Almeida, Alini Gomes Santiago De, Almeida, Danilo Pelaes De, Silva-Júnior, Orleno Marques & Tavares-Dias, Marcos, 2022, Diversity, distribution and new records of freshwater and estuarine shrimp in the state of Amapá, eastern Brazilian Amazon region, pp. 41-71 in Zootaxa 5178 (1) on pages 50-52, DOI: 10.11646/zootaxa.5178.1.3, http://zenodo.org/record/7021864, {"references":["Garcia-Davila, C. R. & Magalhaes, C. (2003) Revisao taxonomica dos camaroes de agua doce (Crustacea: Decapoda: Palaemonidae, Sergestidae) da Amazonia Peruana. Acta Amazonica, 33, 663 - 686.","Holthuis, L. B. (1952) A general revision of the Palaemonidae (Crustacea DecapodA Natantia) of the Americas. II. The subfamily Palaemonidae. Occasional Papers of the Allan Hancock Foundation, Los Angeles, 12, 1 - 395.","Kensley, B. & Walker, I. (1982) Palaemonid shrimps from the Amazon basin, Brazil (Crustacea, Decapoda, Natantia). Smithsonian Contributions to Zoology, Washington, 362, 1 - 28.","Melo, G. A. S. (2003) Familias Atyidae, Palaemonidae e Sergestidae. In: Melo, G. A. S. (Ed.), Manual de identificacao dos Crustacea Decapoda de agua doce do Brasil. Editora Loyola, Sao Paulo, pp. 289 - 415.","Pileggi, L. G., Magalhaes, C., Bond-Buckup, G. & Mantelatto, F. L. (2013) New records and extension of the known distribution of some freshwater shrimps in Brazil. Revista Mexicana de Biodiversidad, 84 (2), 563 - 574. https: // doi. org / 10.7550 / rmb. 30504","Pimentel, F. R. & Magalhaes, C. (2014) Palaemonidae, Euryrhynchidae, and Sergestidae (Crustacea: Decapoda): Records of native species from the states of Amapa and Para, Brazil, with maps of geographic distribution. Check List, 10 (6), 1300 - 1315. https: // doi. org / 10.15560 / 10.6.1300","Santos, M. A. L. dos, Castro, P. M. de & Magalhaes, C. (2018) Freshwater shrimps (Crustacea, Decapoda, Caridea, Dendrobranchiata) from Roraima, Brazil: Species composition, distribution, and new records. Check List, 14 (1), 21 - 35. https: // doi. org / 10.15560 / 14.1.21 https: // doi. org / 10.1163 / 15685403 - 00003176","Gomes-Correa, M. M. (1977) Palemonideos do Brasil (Crustacea-Decapoda - Natantia). Dissertacao de Mestrado. Universidade do Rio de Janeiro, Rio de Janeiro, 191 pp. https: // doi. org / 10.1590 / S 0044 - 59672003000400013","Rodriguez, G. (1982) Freshwater shrimps (Crustacea, Decapoda, Natantia) of the Orinoco basin and the Venezuelan Guayana. Journal of Crustacean Biology, 2 (3), 378 - 391. https: // doi. org / 10.2307 / 1548054","Ramos-Porto, M. & Coelho, P. A. (1990) Sinopse dos Crustaceos decapodos Brasileiros (Familia Palaemonidae). Anais da Sociedade Nordestina de Zoologia, 3, 93 - 111.","Pettovello, A. D. (1996) First Record of Macrobrachium Amazonicum (Decapoda, Palaemonidae) in Argentina 1. Crustaceana, 69 (1), 113 - 114. https: // doi. org / 10.1163 / 156854096 X 00141","Delgado, J. G., Hector, J., Severeyn, A. R. G., Reverol, Y. M. & J., J. E. (1997) Camarones dulceacuicolas y estuarinos de Venezuela (Atyidae, Palaemonidae): nuevos registros para los Estados Zulla y Falcon. Boletin del Centro de Investigaciones Biologicas, 31 (1), 11 - 32."]}

Palaemon carteri (Gordon, 1935) Examined material. Municipality of Macapá: Curiaú River Environmental Protection Area (APA do Curiaú) (00°09’23.8”N, 51°02’09.5”W), 4.v.2002, I.M. Vieira, 16 males and 11 females (IEPA 323); idem, 25.viii.2002, O.A. Alencar and A.C.R. de Araújo, 3 males, 3 females, 2 juveniles (IEPA 372); idem, Curralinho (00°07’26.74”N, 51°04’59”W), 22.ii.2002, I.M. Vieira and O.A. Alencar, 44 juveniles and 8 females with eggs (IEPA 343); Curiaú balneary (00°08’43.2”N, 51°02’31.9”W), 19.viii.2002, O.A. Alencar and A.C.R. de Araújo, 1 male, 2 females, 9 juveniles and 5 females with eggs (IEPA 371); idem, (00°08’43.83”N, 51°02’31.44”W), 31.viii.2002, I.M. Vieira, O.A. Alencar and O.M. Costa, 4 males and 1 female (IEPA 461); (00°09’21.7”N, 51°02’12.9”W), 25.vii.2002, I.M. Vieira, O.A.Alencar and A.C.R. de Araújo, 14 males, 23 females and 5 females with eggs (IEPA 378); (00°08’48,2”N, 51°02’27,4”W), 26.vii.2002, I.M. Vieira, O.A. Alencar and A.C.R. de Araújo, 5 juveniles (IEPA 382); idem, 14 males, 35 females, 1 juvenile and 1 female with eggs (IEPA 414); idem, 25 females and 10 females with eggs (IEPA 421); idem, (00°09’23.8” N, 51°02’09.5”W), 25.viii.2002, I.M. Vieira, 136 specimens (IEPA 455); (00°08’48”N, 51°02’27.4”W), 26.vii.2002, I.M. Vieira, 2 male and 11 female (IEPA 458); idem, 8.ii.2002, I.M. Vieira, O.A. Alencar and O.M. Costa, 26 females and 15 females with eggs (IEPA 480); Wetland Tacacá (00°02’15.9”S, 51°05’44.2”W), 18.vii.2002, O.A. Alencar, D. Filocreão and A.C.R. de Araújo, 56 specimens (IEPA 385); idem, (00°02’14.08”S, 51°05’46.7”W), 18.vii.2002, O.A. Alencar, D. Filocreão and A.C.R. de Araújo, 13 juveniles and 3 females with eggs (IEPA 390); idem (00°02’14.7”S, 51°05’47.7”W), 1 female (IEPA 395); idem (00°02’17.3”S, 51°05’34.7”W), 18.vii.2002, O.A. Alencar, D. Filocreão and A.C.R. de Araújo, 1 male and 1 female (IEPA 399); idem (00°02’24.82”S, 51°05’34,52”W), 1 female (IEPA 401); stream Aterro, (00°15’29”N 51°03’39”W), 05.vI.2002, I.M. Vieira, O.A. Alencar and O.M. Costa, 19 males and 100 females (IEPA 478); Lagoon of Índios (00°21’41.9”N, 51°06’15.5”W), 23.vii.2002, D. Filocreão, A.C.R. de Araújo, and O.T.C. Arnaud, 1 female (IEPA 406); idem (00°0,2’37,6”N, 51°06’15,5”W), 2 males, 7 females, 1 juvenile and 1 female with eggs (IEPA 412); idem (00°02’37,4”N, 51°06’19,0”W), 22.v.2004, A.C.R. de Araújo, I.M. Vieira and O.T.C. Arnaud, 3 males and 9 females (IEPA 512); idem, 2 males, 1 female and 1 juvenile (IEPA 513); idem (00°01’48.4”N, 51°06’20.3”W), 22.v.2004, A.C.R. de Araújo, I.M. Vieira and O.T.C. Arnaud, 3 males, 10 females and 2 juveniles (IEPA 516); idem, 19.vi.2004, A.C.R. de Araújo and O.T.C. Arnaud, 18 females (IEPA 544); idem, 23. 2004, O.T.C. Arnaud, 4 males, 3 females, 3 juvenile and 2 females with eggs (IEPA 550); idem (00°02’38.4”N, 51°06’18.0”W), 22.v.2004, A.C.R. de Araújo, I.M. Vieira and O.T.C. Arnaud, 2 males and 6 females (IEPA 532); idem (00°01’55.3”N, 51°06’07.2”W), 22.v.2004, A.C.R. de Araújo, I.M. Vieira, O.T.C. Arnaud and F.J.S. Costa, 1 male, 2 females and 1 juvenile, (IEPA 536); idem (00°02’38.4”N, 51°06’18.0”W), 19.vi.2004, A.C.R. de Araújo and O.T.C. Arnaud, 9 males, 20 females, 2 juveniles and 2 females with eggs (IEPA 538); idem (00°01’55.3”N, 51°06’07.2”W), 23.vii.2004, O.T.C. Arnaud, 3 males and 7 females (IEPA 590); idem, 4 females (IEPA 593); idem, (00°01’45.1”N, 51°06’20.1”W), 19.vi.2004, A.C.R. de Araújo and O.T.C. Arnaud, 4 males, 1 female, 2 females with eggs and 1 juvenile (IEPA 594); idem, (00°02’40.4”N, 51°06’14.6”W), 19.vi.2004, A.C.R. de Araújo and O.T.C. Arnaud, 5 specimens (IEPA 604); idem, (00°01’42.8”N, 51°06’22.4”W), 23.vii.2004, O.T.C. Arnaud, 1 female and 1 juvenile (IEPA 611); idem (00°02’37.4”N, 51°06’20.3”W), 22.vii.2004, A.C.R. de Araújo and O.T.C. Arnaud, 3 males and 9 females (IEPA 626); idem (00°01’42.8”N, 51°06’20.1”W), 19.vi.2004, A.C.R. de Araújo and O.T.C. Arnaud, 2 males and 2 females (IEPA 629); stream in gallery forest, (00°14’51”N, 51°02’33”W), 05.iii.2002, I.M. Vieira, O.A. Alencar and O.M. Costa, 2 females (IEPA 1284).—Municipality of Ferreira Gomes: ponte do Capivara, Pedreira River (0°34’16,78”N, 50°59’54,76”W), 5.vi.2002,I.M.Vieira, O.A.Alencar e O.M. Costa, 28specimens (IEPA 439); stream (00°59’31.8”N, 51°12’14.8”W), 4.ix.2002, I.M. Vieira, 1 male (IEPA 584); stream Aterro, (00°15’29”N, 51°03’39”W), 5.v.2002, I.M. Vieira, 11 specimens (IEPA 771); Floresta Nacional do Amapá, Stream Santo Antônio, Waterfall Arrependido (1°07’07”N, 51°51’36”W), 6.iii.2005, I.M. Vieira and D.C.C. Vieira, 1 male and 7 females (IEPA 801); Stream Santo Antônio (01°06’37”N, 51°53’37”W), 5.iii.2005, I.M. Vieira and D.C.C. Vieira, 8 specimens (IEPA 808); stream Santo Antônio (01°06’37”N, 51°53’37”W), 10.iii.2005, I.M. Vieira and D.C.C. Vieira, 2 males (IEPA 854); 13.iii.2005, I.M. Vieira and D.C.C. Vieira, 6 males and 4 females (IEPA 857); Reserva Particular do Patrimônio Natural Seringal Triunfo, swamp in açaizal (00°56’49.20”N, 51°14’49.71”W), 31.i.2006, M. Vieira and D.C.C. Vieira, 47 males, 22 females and 18 females with eggs (IEPA 1662); Private Reserve of Natural Heritage, stream in gallery forest (1°00’59”N, 51°13’03”W), 27.i.2006. I. M. Vieira and D.C.C. Vieira, 11 males, 7 females and 12 females with eggs (IEPA 1666); Private Reserve of Natural Heritage, stream in gallery forest (1°01’34”N, 51°13’49”W), 29.i.2006, I. M. Vieira and D.C.C. Vieira, 6 males, 8 females and 3 females with eggs (IEPA 1673); Private Reserve of Natural Heritage (0°59’29”N, 51°12’18”W), 01.ii.2006, I. M. Vieira and D.C.C. Vieira, 6 males, 4 females and 4 females with eggs (IEPA 1675); 1 male (IEPA 1679); 7 males and 12 females with eggs (IEPA 1680); Private Reserve of Natural Heritage (0°57’04”N, 51°14’56”W), 30.i.2006, I.M. Vieira and D.C.C. Vieira, 33 males, 73 females and 15 females with eggs (IEPA 1682).—Municipality of Laranjal do Jari: Stream Riacho Doce (00°50’02,61”S, 52°32’34,65”W), 25.x.2007, I.M. Vieira, 136 specimens (IEPA 1166); Jari River (PBA P12), 29.x.2007, I. M. Vieira, 271 specimens (IEPA 1175); tributary stream of the river Jari (0°51’10”S 52°32’59”W), 27.x.2007, I. M. Vieira 17 specimens (IEPA 1183); Jari River (0°50’44”S, 52°32’53”W), 27.x.2007, I.M. Vieira, 35 specimens (IEPA 1185); Stream Riacho Doce (00°47’54.85”S, 52°31’49.65”W), 26.x.2007, I.M. Vieira, 2 specimens (IEPA 1176); idem, 2.ix.2009, I.M. Vieira, 12 males and 28 females (IEPA 1460); Jari River (00°45’02”S 52°30’27”W), 26.x.2007, I.MVieira, 195 specimens (IEPA 1181); idem, Jari River, 02.xii.2009, I.M. Vieira and E.F. Araújo, 44 males and 77 females (IEPA 1377); Jari River (00°51’36.20”S, 52°32’18.11”W), 15.vii.2008, F. J. S. Costa and E. F. Araujo 3 specimens (IEPA 1203) Jari River (00°38’02.5”S, 52°00’29.2”W), 04.ix.2009, I. M. Vieira, 4 males and 92 females (IEPA 1250); Jari River, beach (0°51’38”S 52°32’09”W), 02.ix.2009, I. M. Veira 1 female (IEPA 1252); Jari River (0°51’01”S, 52°32’55”W), 04.ix.2009, I. M. Vieira 24 females (IEPA 1253); idem, (0°51’17”S, 52°32’53”W), 27.x.2007, I.M. Vieira and D.C.C. Vieira, 1 male (IEPA 1368); stream (0°50’07”S, 52°32’35”W), 17.vi.2010, I.M. Vieira and E.F. Araújo, 1 male and 1 female (IEPA 1417); stream (0°51’10”S, 52°33’02”W), 17.vi.2010, I.M. Vieira and E.F. Araújo, 4 males and 5 females (IEPA 1422); idem, 1 male (IEPA 1475); Jari River, (0°51’45”S, 52°31’27”W), 26.x.2007, I.M. Vieira, 1 female (IEPA 1453); Jari River (0°51’17”S, 52°32’53”W), 27.X.2010, I.M. Vieira, 3 males (IEPA 1458); Jari River (0°51’49”S, 52°31’28”W), 27.10. 2007, I.M. Vieira, I 5 specimens (IEPA 1465); stream Serra Pelada (0°40’33.89”S, 52°30’48.22”W), 17.vii.2008, I.M. Vieira, 28 males and 1 female (IEPA 1476); left margin of the Jari River (0°51’26.75”S, 52°32’10.88”W), 17.vii.2007, I.M. Vieira, 1 specimen (IEPA 1477); island in the Jari River (0°50’07”S, 52°32’11”W), 18.vii.2008, I.M. Vieira, 1 male and 2 females (IEPA 1480); left margin of the Jari River (00°47’54.85”S, 52°31’49.65”W), 7.ix.2009, I.M. Vieira and E.F. Araújo, 2 males and 15 females (IEPA 1381); Reserva Extrativista do rio Cajari, Stream Sororoca, BR 156, savanna (00°20’09.8”S, 51°54’22.6”W), 12.vii.2013, I.M. Vieira and K.J.G.Corrêa, 1 male, 4 females and 1 female with eggs (IEPA 1636); Waterfall of Santo Antônio, rio Jari (0°38’42.47”S, 52°30’27.95”W), 4.xii.2009, I.M. Vieira, 56 specimens (IEPA 1242).—Municipality of Porto Grande: açude na área 36 da Amapá Florestal e Celulose S.A (AMCEL), Tessalônica (00°28’60”N, 51°04’59”W), 6.vi.2002, I.M. Vieira, 6 male, 12 females, 13 juveniles and 2 females with eggs IEPA 331); stream near to fish farm of the AMCEL, (00°42’40”N, 51°23’32”W), 7.vii.2002, I.M. Vieira, O.A.Alencar and O.M. Costa, 3 males, 2 males and 3juveniles (IEPA 352).—Municipality of Tartarugalzinho: Euzébio River, Farm São Bento, (01°15’45”N, 50°48’24”W), 11.vii.2002, I.M. Vieira, O.A. Alencar and O.M. Costa, 2 males, 6 females and 1 female with eggs (IEPA 384); idem, (01°51’95”N, 50°48’24”W), 6.vi.2002, I.M. Vieira, O.A. Alencar and O.M. Costa, 1 female (IEPA 1082); Farm São Bento (01°16’54”N, 50°48’04”W), 11.vii.2002, I.M. Vieira, O.A. Alencar and O.M. Costa, 2 males (IEPA 565); idem (01°16’54”N, 50°48’04”W), 6.vi.2002, I.M. Vieira, O.A. Alencar and O.M. Costa, 1 male (IEPA 566). Municipality of Amapá: stream in gallery forest, savana, (02°00’24.1”N, 50°55’57.9”W), 8 males, 11 females and 6 juveniles (IEPA 355); estuary of Sucuriju River (01°40’23.9”N, 49°54’56.7”W), 27.vii.2002, I.M. Vieira, 4 male and 1 female (IEPA 459); idem, 22.vii.2002, I.M. Vieira, 16 specimens (IEPA 485).—Municipality of Cutias: Araguari River, cove with colonization of aquatic macrophytes (01°26’10.3”N, 50°34’22.7”W), 25.iv.2004, I.M. Vieira, 4 males, 3 females and 2 females with eggs (IEPA 576).—Municipality of Pracuúba: Pracuúba Lake (01°40’27”N, 50°49’32”W), 22. x.2004, I.M. Vieira, 3 males and 6 females (IEPA 728); idem, 2 males and five females (IEPA 729); idem, 21.x.2004, I.M. Vieira, 49 specimens (IEPA 732) (Figure 5). Geographic distribution. Venezuela, Colombia, Suriname, Guyana, French Guyana and Brazil (states of Amapá, Amazonas and Pará) (Holthuis 1952; Melo 2003; Pileggi et al. 2013; Pimentel & Magalhães 2014). Distribution in Amapá state. Basins of the rivers Curia, Rio Santo Antônio, Igarapé Sororoca (basin of the Cajari River), Sucuriju, Araguari, Amazon, and Lagon of Índios and Lake Pracuúba. Previous records. Melo (2003); Pileggi et al. (2013); Pimentel & Magalhães (2014). Ecological notes. The species is found in low hydrodynamic environments, along with leaf litter, macrophytes and marginal vegetation (Carvalho 2014). The eggs are big and few (Melo 2003). Remarks. The morphological characters of the specimens evaluated in this study correspond to the descriptions of (Holthuis (1952); Melo (2003); Pimentel & Magalhães (2014)., Published as part of Vieira, Inacia Maria, Silva, Luiz Maurício Abdon, Almeida, Alini Gomes Santiago De, Almeida, Danilo Pelaes De, Silva-Júnior, Orleno Marques & Tavares-Dias, Marcos, 2022, Diversity, distribution and new records of freshwater and estuarine shrimp in the state of Amapá, eastern Brazilian Amazon region, pp. 41-71 in Zootaxa 5178 (1) on pages 60-63, DOI: 10.11646/zootaxa.5178.1.3, http://zenodo.org/record/7021864, {"references":["Kensley, B. & Walker, I. (1982) Palaemonid shrimps from the Amazon basin, Brazil (Crustacea, Decapoda, Natantia). Smithsonian Contributions to Zoology, Washington, 362, 1 - 28.","Holthuis, L. B. (1952) A general revision of the Palaemonidae (Crustacea DecapodA Natantia) of the Americas. II. The subfamily Palaemonidae. Occasional Papers of the Allan Hancock Foundation, Los Angeles, 12, 1 - 395.","Melo, G. A. S. (2003) Familias Atyidae, Palaemonidae e Sergestidae. In: Melo, G. A. S. (Ed.), Manual de identificacao dos Crustacea Decapoda de agua doce do Brasil. Editora Loyola, Sao Paulo, pp. 289 - 415.","Pileggi, L. G., Magalhaes, C., Bond-Buckup, G. & Mantelatto, F. L. (2013) New records and extension of the known distribution of some freshwater shrimps in Brazil. Revista Mexicana de Biodiversidad, 84 (2), 563 - 574. https: // doi. org / 10.7550 / rmb. 30504","Pimentel, F. R. & Magalhaes, C. (2014) Palaemonidae, Euryrhynchidae, and Sergestidae (Crustacea: Decapoda): Records of native species from the states of Amapa and Para, Brazil, with maps of geographic distribution. Check List, 10 (6), 1300 - 1315. https: // doi. org / 10.15560 / 10.6.1300","Carvalho, F. L. (2014) Sistematica do genero Palaemon Weber, 1795 (Decapoda, Palaemonidae): uma abordagem molecular e morfologica de padroes filogeograficos, evolucao de caracteristicas ecologicas e status taxonomico das especies do Brasil. Tese de Doutorado, Faculdade de Filosofia, Ciencias e Letras de Ribeirao Preto, Universidade de Sao Paulo, Ribeirao Preto, 192 pp."]}

Macrobrachium jelskii (Miers 1878) Examined material. Municipality of Amapá: Sucuriju District, Sucuriju River (01°41’35.0”N, 50°00’30.6”W), 17 males and 23 females (IEPA 130), idem, ix.1997, J.O. Cardoso, I.M. Vieira and O.M. Costa, 15 males and 9 females (IEPA 141); idem, ix.1997, J.O. Cardoso, I.M. Vieira and O.M. Costa, 3 males and 5 females (IEPA 142); idem, 21.iii.1998, I.M. Vieira and O.M. Costa and A.C. Sousa, 1 females (IEPA 164); xi.1997, I.M. Vieira, J.O. Cardoso and O.M. Costa, 3 males, 5 females and 6 juveniles (IEPA 131); idem (01°40’35,7”N, 49°55’53,92W), xi.1997, I.M. Vieira, J.O. Cardoso and O.M. Costa, 3 males (IEPA 175); idem, xi.1997, I.M. Vieira, J.O. Cardoso and O.M. Costa, 1 female (IEPA 197); Sucuriju River (01°40’35.0”N, 50°00’30.6”W), xi.1997, I.M. Vieira, J.O. Cardoso and O.M. Costa, 1male (IEPA 245); Mouth of Sucuriju River (01°40’23.9”N, 49°54’56.7”W), 22.vii.2002, I.M. Vieira and O.M. Costa, 6 males, 12 females, 7 juveniles and 5 females with eggs (IEPA 365), idem, 22.vii.2002, I.M. Vieira and O.M. Costa, 2 males, 3 females and 2 juveniles (IEPA 487); idem (01°40’14.6”N, 49°55’21.35”W), v.2004, I.M. Vieira, 36 specimens (IEPA 735); Sucuriju River (1°40’47.26”N, 49°56’33.34”W), 26.vi.2005, I.M. Vieira, 4 specimens (IEPA 1311).— Municipality of Macapá: Wetland Tacacá, (00°02’20.7”S, 51°05’35.2”W), 29.vi.2000, C. Robds, 4 juveniles (IEPA 253); (00°02’12.25”S, 51°05’49.76”W); 19.vii.2002, D. Filocreão, O.A. Alencar, A.C.R. de Araújo, O.T.C. Arnaud, 1male (IEPA 363); (00°02’20.7”S, 51°05’34.7”W), 18.vii.2002, D. Filocreão, O.A. Alencar, A.C.R. de Araújo, O.T.C. Arnaud, 3 males and 5 females (IEPA 391); (00º02’17.3”S, 51º05’34.7”W), 07.i.2004, A.C.R. de Araújo, F.J.S. Costa, O.T.C. Arnaud, R.N. G. Mendes, 3 males, 7 females, 1 juvenile and 01 female with eggs (IEPA 500); Environmental Protection Area of the Curiaú River, Curralinho, (00°07’26.74”N, 51°06’50.18”W), 08.vi.2002, I.M. Vieira, O.A. Alencar and O.M. Costa, 1 male and 1 female (IEPA 336); (00°08’43.2”N, 51°02’31.9”W), 19.viii.2002, D. Filocreão, O.A. Alencar, and O.T.C. Arnaud, 57 males, 2 females and 25 females with eggs (IEPA 370); (00°09’23.8”N, 51°02’09.5”W), 25.viii.2002, O.A. Alencar and O.T.C. Arnaud, 3 males, 16 females and 5 juveniles (IEPA 373); (00°08’43.83”N, 51°02’31.44”W), 31.viii.2002, I.M. Vieira, 18 males, 11 females and 1 juvenile (IEPA 462); (00°08’44.16”N, 51°02’32.77”W), 25.ix.2002, I.M. Vieira, 3 females (IEPA 476); igarapé (00°15’29”N, 51°03’39”W), 05.vi.2002, I.M. Vieira, O.A. Alencar and O.M. Costa, 1 male and 3 females (IEPA 348); (00°15’29”N, 51°03’39”W), 5.vi.2002, I.M. Vieira, O.A. Alencar and O.M. Costa, 6 males and 10 females (IEPA 330); Davi River (01°55’52,9”N, 50°51’38,7”W), 18.VI.2002, I.M. Vieira, O.A.Alencar and O.M. Costa, 25 juveniles and 3 females with eggs (IEPA 359); Wetland Fazendinha (00°03’00.27”S, 51°07’00.72”W), 18.vii.2002, D. Filocreão, O.A. Alencar, and O.T.C. Arnaud, 4 females (IEPA 362); Lagoon of Índios (00°21’41.9”N, 51°06’15.5”W), 23.vii.2002, D. Filocreão, O.A. Alencar, and O.T.C. Arnaud, 19 males, 12 females and 1 juvenile (IEPA 407); 23.vii.2002, D. Filocreão, O.A. Alencar, and O.T.C. Arnaud, 3 males, 16 females and 1 juvenile (IEPA 411); (00°02’37.6”N, 51°06’19.2”W), 08.v.2002, I.M. Vieira, O.A. Alencar and O.M. Costa, 3 males and 2 juveniles (IEPA 433); (00°02’38.4”N, 51°06’18.0”W), 22.v.2002, A.C.R. Araújo, I.M. Vieira and O.T.C. Arnaud, 33 males, 52 females (IEPA 526); (00°02’40.4”N, 51°06’14.6”W), 22.v.2002, A.C.R. Araújo, I.M. Vieira, O.T.C. Arnaud and F.J. S. Costa, 1 male, 14 females and 2 juveniles (IEPA 506); (0°02’38,4”N, 51°06’18,8”W), 19.vi.2004, A.C.R. Araújo and O.T.C. Arnaud, 5 males, 27 females and 20 juveniles (IEPA 627); (00°02’37.4”N, 51°06’20.3”W), 19.vi.2004, A.C.R. Araújo and O.T.C. Arnaud, 3 males, 6 females and 1 female with eggs (IEPA 588); (00°01’48.4”N, 51°06’20.3”W), 19.vi.2004, A.C.R. Araújo and O.T.C. Arnaud, 5 females and 2 juveniles (IEPA 589); (00°01’42,8”N, 51°08’22,4”W), 19.vi.2004, A.C.R. Araújo and O.T.C. Arnaud, 4 males, 9 females (IEPA 602); 23.vii.2004, O.T.C. Arnaud, 14 males, 23 females, 7 female with eggs and 3 juveniles (IEPA 613); (00°01’55.3”N, 51°06’07.2”W), 14 males, 23 female and 5 juveniles (IEPA 601); (00°01’48,4”N, 51°06’20.3”W), 28.vii.2004, A.C.R. Araújo and O.T.C. Arnaud, 23 males, 28 females and 3 juveniles (IEPA 609); (00°02’39.5”N, 51°06’16.7”W), 21.xi.2004, A.C.R. Araújo and O.T.C. Arnaud, 19 males, 32 females and 1 juvenile (IEPA 619); (00°02’41.4”N, 51°06’14.6”W), 23.vii.2004, A.C.R.Araújo and O.T.C. Arnaud, 25 males, 37 females and 4 juveniles (IEPA 635).— Municipality of Santana: Maruanum River (0°10’49.193”N, 51°16’30.544”W), 02.iv.2002, I.M. Vieira and O.M. Costa, 1 male (IEPA 320).— Municipality of Ferreira Gomes: stream in gallery forest (0°28’60”N, 51°04’59”W), 04.vi.2002, I.M. Vieira and O.M. Costa, 1 female (IEPA 325); Manuel Capu Stream (02°02’47”N, 50°54’09”W), 18.vi.2002, I.M. Vieira, O.A. Alencar and O.M. Costa, 32 specimens (IEPA 360).— Municipality of Porto Grande: creek in the resort of Porto Grande (00°44’56”N, 51°04’59”W), 18.vi.2002, I.M. Vieira, 1 male (IEPA 347).— Municipality of Tartarugalzinho: Farm São Bento, Eusébio River (01°16’57”N, 50°48’15”W), 11.vi.2002, I.M. Vieira, O.A. Alencar and O.M. Costa, 2 males and 4 females (IEPA 353); Farm São Bento, lake (01°16’54”N, 50°48’04”W), 6.vi.2002, I.M. Vieira, O.A. Alencar and O.M. Costa, 19 specimens (IEPA 436); 11.vi.2002, I.M. Vieira, O.A. Alencar and O.M. Costa, 5 specimens, 5 females and males (IEPA 492); stream (1°01’16”N, 51°12’56”W), 4.ii.2006, I.M. Vieira and D.C.C. Vieira, 52 males (IEPA 1687).— Municipality Cutias: Bom Jesus do Tabaco, Araguari River (01°26’10.3”N, 50°34’22.7”W), iv.2004, I.M. Vieira, 9 males, 36 females and 13 females with eggs (IEPA 534); Stream of Costa (01°19’26.6”N, 50°16’36.0”W), v.2004, I.M. Vieira, 2 males and 26 females (IEPA 554); idem coleta anterior (01°19’26.6”N, 50°16’36.0”W), 26.iv.2004, I.M. Vieira, 47 specimens (IEPA 768); Araguari River (01°20’31.1”N, 50°18’90.8”W), v.2004, I.M. Vieira, 3 males, 3 females and 1 female with eggs (IEPA 570); Araguari River (01°26’10.3”N, 51°06’20.3”W), iv. 2004, I.M. Vieira, 9 males, 36 females and 13 females wit eggs (IEPA 578); Fazenda Santa Margarida, Araguari River (01°19’50.3”N, 50°15’56.7”W), 29.iv.2004, I.M. Vieira, 2 females (IEPA 746); 29.iv.2004, I.M. Vieira, 1 male and 3 females (IEPA 752); Bom Jesus do Tabaco (01°19’23”N, 50°16’23”W), 26.iv.2004, I.M. Vieira, 1 male and 18 females (IEPA 1298); (1°19’59,5”N, 50°14’57,5”W), 29.iv.2004, I.M. Vieira, 1 male and 1 female (IEPA 1302); Stream (01°20’29.8”N, 50°14’41.6”W), 29.iv.2004, I.M. Vieira 20 specimens (IEPA 1404); Stream Jacaré (01°20’31.1”N, 50°18’20”W), 24.iv.2004, I.M. Vieira, 1 specimens (IEPA 1410);— Municipality of Pracuúba: Pracuúba Lake (1°45’01.21”N, 50°49’15.40”W), vii.1981, M.A.S. Lima, 24 females and 9 juveniles (IEPA 06); Pracuúba Lake (01°44’41.49”N, 50°47’31.50”W), 21.x.2004, I.M. Vieira, 100 specimens (IEPA 730); Pracuúba Lake (01°44’36.11”N, 50°47’40.27”W), 22.x.2004, I.M. Vieira, 173 specimens (IEPA 731).— Municipality of Laranjal do Jari: Jari River (0°08’37.09”S, 53°04’08.87”W) 26.x.2007, I.M. Vieira, 13 males and 15 females (IEPA 1161); Jari River (00°38’02.5”S, 52°00’29.2”W), 29.x.2008, I.M. Vieira, 11 males and 18 females (IEPA 1163); Jari River (00°51’36.20”S, 52°32’18.11”W), 15.vii.2008, I.M. Vieira, 1 specimen (IEPA 1204); Jari River, PBA P08 (00°41’23.85”S, 52°30’52.40”W), 27.x.2007, I.M. Vieira, 1 male (IEPA 1235); Balneário Riacho Doce, Jari River (00°50’03,12”S, 52°32’33,29”W), 28.x.2008, I.M. Vieira, 1 female (IEPA 1239); Jari River, Waterfall of Santo Antônio (0°38’42.47”S, 52°30’27.95), 04.xii.2009, I.M. Vieira, 8 males and 14 females (IEPA 1243); tributary stream of Jari River (00°45’02”S 52°30’27”W), 04.ix.2009, I.M. Vieira, 1 female (IEPA 1251); Jari River (00°45’02”S, 52°30’27”W), 27.v.2007, I.M. Vieira, 6 females (IEPA 1466); Riacho Doce creek, tributary of the river Jari (00°47’54.85”S, 52°31’49.65”W), 02.ix.2009, I.M. Vieira, 2 males (IEPA 1472).— Municipality of Calçoene: Beach of Goiabal (02°37’28.51”N, 50°51’03.3”W), 23.vi.2006, I.M. Vieira, 4 females (IEPA 1357); Beach of Goiabal (02°37’28.51”N, 50°51’03.3”W), 20.v.2006, I.M. Vieira, 3 juveniles (IEPA 1359); stream on the left bank of the Jari River, (00°50,822”S, 52°32,545”W); 3 males and 4 female, I.M. Vieira (IEPA 1469).— Municipality of Tartarugalzinho: stream of riparian forest (0°56’49.20”N, 51°14’40.71”W), 01.ii.2006, I.M. Vieira and D.C.C. Vieira, 5 males and 31 females (IEPA 1667).— Municipality of Ferreira Gomes: stream (0°56’49.20”N, 51°14’49.71”W), 31.i.2006, I.M. Vieira and D.C.C. Vieira, 5 males and 8 females (IEPA 1669); Amapá Grande River, Waterfall Grande, 2 immature females, 10 immature males, 2 juveniles, 25.viii.1992, C. Magalhães (INPA-CRU 001060); Araguari River, Biological Reserve of Lake Piratuba that connects to the larger lakes, 25.viii.1992, C. Magalhães (INPA-CRU 001065); Region of the lakes, Pracuúba lake, 1 female, 00. vii.1984, M.S. Lima, (INPA-CRU 001066) (Figure 4). Geographic distribution. Venezuela, Suriname, Guyana, French Guyana, Trinidad, Bolivia and Brazil (states of Amapá, Pará, Amazonas, Roraima, Maranhão, Ceará, Rio Grande do Norte, Paraíba, Pernambuco, Alagoas, Sergipe, Bahia, Minas Gerais, Espírito Santo, Mato Grosso, Santa Catarina, São Paulo and Paraná) (Magalhães 2002; Pileggi et al. 2013; Ramos-Porto 1985; Santos et al. 2018;) Distribution in Amapá state. Basins of the rivers Sucuriju, Curiaú, Davi, Maruanum, Manuel Capu, Araguari, Euzébio, Jari, Lagoon of Indios. Previous records. Melo (2003); Pileggi et al. (2013); Pimentel & Magalhães (2014). Ecological notes. Inhabits clear, black and white waters reaching higher regions, a little above 100 m, cohabit with Macrobrachium amazonicum in the lower regions (García-Dávila & Magalhães 2003). Remarks. The morphological characters of the specimens evaluated in this study correspond to the descriptions of García-Dávila & Magalhães (2003); Holthuis (1952); Melo (2003)., Published as part of Vieira, Inacia Maria, Silva, Luiz Maurício Abdon, Almeida, Alini Gomes Santiago De, Almeida, Danilo Pelaes De, Silva-Júnior, Orleno Marques & Tavares-Dias, Marcos, 2022, Diversity, distribution and new records of freshwater and estuarine shrimp in the state of Amapá, eastern Brazilian Amazon region, pp. 41-71 in Zootaxa 5178 (1) on pages 54-56, DOI: 10.11646/zootaxa.5178.1.3, http://zenodo.org/record/7021864, {"references":["Magalhaes, C. (2002) A rapid assessment of the decapod fauna in the Rio Tahuamanu and Rio Manclaroclaruripi Basins, with new records of shrimps and crabs for Bolivia (Crustacea, Decapoda, Palaemonidae, Sergestidae, Trichodactylidae). Revista Brasileira de Zoologia, 4 (19), 1091 - 1103. https: // doi. org / 10.1590 / S 0101 - 81752002000400014","Pileggi, L. G., Magalhaes, C., Bond-Buckup, G. & Mantelatto, F. L. (2013) New records and extension of the known distribution of some freshwater shrimps in Brazil. Revista Mexicana de Biodiversidad, 84 (2), 563 - 574. https: // doi. org / 10.7550 / rmb. 30504","Ramos-Porto, M. (1985) Revisao das especies do genero Leander E. Desmarest que ocorrem no litoral brasileiro. Tropical Oceanography 19 (1), 1 - 11. https: // doi. org / 10.5914 / tropocean. v 19 i 1.2614","Santos, M. A. L. dos, Castro, P. M. de & Magalhaes, C. (2018) Freshwater shrimps (Crustacea, Decapoda, Caridea, Dendrobranchiata) from Roraima, Brazil: Species composition, distribution, and new records. Check List, 14 (1), 21 - 35. https: // doi. org / 10.15560 / 14.1.21 https: // doi. org / 10.1163 / 15685403 - 00003176","Melo, G. A. S. (2003) Familias Atyidae, Palaemonidae e Sergestidae. In: Melo, G. A. S. (Ed.), Manual de identificacao dos Crustacea Decapoda de agua doce do Brasil. Editora Loyola, Sao Paulo, pp. 289 - 415.","Pimentel, F. R. & Magalhaes, C. (2014) Palaemonidae, Euryrhynchidae, and Sergestidae (Crustacea: Decapoda): Records of native species from the states of Amapa and Para, Brazil, with maps of geographic distribution. Check List, 10 (6), 1300 - 1315. https: // doi. org / 10.15560 / 10.6.1300","Garcia-Davila, C. R. & Magalhaes, C. (2003) Revisao taxonomica dos camaroes de agua doce (Crustacea: Decapoda: Palaemonidae, Sergestidae) da Amazonia Peruana. Acta Amazonica, 33, 663 - 686.","Holthuis, L. B. (1952) A general revision of the Palaemonidae (Crustacea DecapodA Natantia) of the Americas. II. The subfamily Palaemonidae. Occasional Papers of the Allan Hancock Foundation, Los Angeles, 12, 1 - 395."]}

Macrobrachium carcinus Linnaeus, 1758 Examined material. Municipality of Macapá: District Fazendinha, Amazon River (00°03’18.89”S, 51°07’09.40”W), 26.v.1990, J.C.S. de Oliveira, 1 male and 1 female (IEPA 10); idem, 26.v.1990, coll. J.C.S. de Oliveira, 01 specimen (IEPA 11); idem, 25.v1990, coll. J.C.S. de Oliveira, 03 males and 01 females with eggs (IEPA 13); idem, 25.v1990, coll. J.C.S. de Oliveira, 1 female with eggs (IEPA 14); idem, 1 male (IEPA 15); idem, 06.v.1990, coll. J.C.S. de Oliveira, 1 female with eggs (IEPA 16); idem, 06.v.1990, J.C.S. de Oliveira, 03 females and 1 female with eggs (IEPA 17); Archipelago of Bailique, Faustino River (00°53’36.9”N, 50°11’01.9”W), 31.viii.1995, L. Ramos H.P. Belo, J.O. Cardoso and I.M. Vieira, 1 male (IEPA 48); idem, 01 female (IEPA 49); idem, Amazon River (00°52’59.34”N, 50°04’56.51”W), 23.vi.2000, I.M. Vieira, O.A. Alencar and O.M. Costa, 1female with eggs (IEPA 221).— Municipality of Santana: Igarapé Fortaleza River (00°38’40.55”N, 52°30’30.71”W), 4.ii.1997, O.M. Costa, 02 males and 01 female (IEPA 125); idem, (0°02’42.01”S, 51°08’10.38”W), 10.xi.1998, I.M. Vieira, 1 male (IEPA 824); Santana Island, Amazon River (00°05’13.84”S, 51°09’06.98”W), 15.iv.2000, I.M. Vieira, O.A. Alencar O.M. Costa and J.O. Cardoso, 04 females (IEPA 208), Santana Island, Dourado Lake (00°04’32.2”S, 1°09’44.4W), 21.iv.2012, A.G. Santiago and E.O. Galeno, 1 male (IEPA1561); idem, Amazon River, Recanto da Aldeia (00°04’43.8”S, 51°09’53.7”W), 15.viii.2012, A.G. Santiago and E.O. Galeno, 1 male (IEPA 1576), idem, Amazon River, Recanto da Aldeia (00°04’43.8”S, 51°09’53.7”W), 16.xi.2012, A.G. Santiago and E.O. Galeno, 2 males and 2 females (IEPA 1588); idem, Amazon River, Praia da Ponte (00°02’318.0”S, 51°05”38.7”W), 27.x.2012, A.G. Santiago and E.O. Galeno, 2 males (IEPA 1587). Municipality of Pracuúba: Pracuúba Lake (1°45’01.21”N, 50°49’15.40”W), 18.xi.1990, J.C.S. Oliveira, 2 males and 3 females (IEPA 258) (Figure 3). Geographic distribution. Eastern Atlantic Ocean, USA (Florida, Mississipi, Louisiana and Texas) Mexico, Cuba, Guatemala, Costa Rica, Panamá, Cuba, Porto Rico, Jamaica, Barbados, Lesser Antilles, Colombia, Ecuador, Peru, Venezuela, Guyana, Suriname and Brazil (states of Pará, Pernambuco, Alagoas, Espírito Santo, Rio de Janeiro, São Paulo, Santa Catarina and Rio Grande do Sul) (Ferreira et al. 2010; Holthuis 1952; Melo 2003; Pimentel & Magalhães 2014; (Delgado et al. 1997; Ramos-porto & Coelho 1998; Bowles et al. 2000). Distribution in Amapá state. Amazon River (Fazendinha, Archipelago of Bailique, Santana Island); Faustino River (tributary of the Araguari River) and Pracuúba Lake. Previous records. Pimentel & Magalhães (2014) Ecological notes. The shrimp of the species inhabit backwaters in rivers with strong turbulence; under trunks and rocks, nocturnal, found in rivers of the Atlantic drainage. Remarks. The species can reach 300 mm in body length and weigh up to 1 kg, while ovigerous females generally range from 130–170 mm. The carpus of the second pair of pereiopods is clearly shorter than the mere (Bowles et al. 2000), Published as part of Vieira, Inacia Maria, Silva, Luiz Maurício Abdon, Almeida, Alini Gomes Santiago De, Almeida, Danilo Pelaes De, Silva-Júnior, Orleno Marques & Tavares-Dias, Marcos, 2022, Diversity, distribution and new records of freshwater and estuarine shrimp in the state of Amapá, eastern Brazilian Amazon region, pp. 41-71 in Zootaxa 5178 (1) on pages 53-54, DOI: 10.11646/zootaxa.5178.1.3, http://zenodo.org/record/7021864, {"references":["Ferreira, R. S., Vieira, R. R. R. & D'Incao, F. (2010) The marine and estuarine shrimps of the Palaemoninae (Crustacea: Decapoda: Caridea) from Brazil. Zootaxa, 2606 (1), 1 - 24. https: // doi. org / 10.11646 / zootaxa. 2606.1.1","Holthuis, L. B. (1952) A general revision of the Palaemonidae (Crustacea DecapodA Natantia) of the Americas. II. The subfamily Palaemonidae. Occasional Papers of the Allan Hancock Foundation, Los Angeles, 12, 1 - 395.","Melo, G. A. S. (2003) Familias Atyidae, Palaemonidae e Sergestidae. In: Melo, G. A. S. (Ed.), Manual de identificacao dos Crustacea Decapoda de agua doce do Brasil. Editora Loyola, Sao Paulo, pp. 289 - 415.","Pimentel, F. R. & Magalhaes, C. (2014) Palaemonidae, Euryrhynchidae, and Sergestidae (Crustacea: Decapoda): Records of native species from the states of Amapa and Para, Brazil, with maps of geographic distribution. Check List, 10 (6), 1300 - 1315. https: // doi. org / 10.15560 / 10.6.1300","Delgado, J. G., Hector, J., Severeyn, A. R. G., Reverol, Y. M. & J., J. E. (1997) Camarones dulceacuicolas y estuarinos de Venezuela (Atyidae, Palaemonidae): nuevos registros para los Estados Zulla y Falcon. Boletin del Centro de Investigaciones Biologicas, 31 (1), 11 - 32.","Ramos-Porto, M. & Coelho, P. A. (1998) Sinopse dos crustaceos decapodos brasileiros (Infraordem Stenopodidea). Cadernos Omega. Serie Ciencias Aquaticas, Recife, 4, 109 - 112.","Bowles, D. E., Aziz, K. & Knight, C. L. (2000) Macrobrachium (Decapoda: Caridea: Palaemonidae) in the contiguous United States: a review of the species and an assessment of threats to their survival. Journal of Crustacean Biology, 20 (1), 158 - 171. https: // doi. org / 10.1163 / 20021975 - 99990025"]}

Pseudopalaemon amazonensis Ramos-Porto, 1979 Examined material. Municipality of Ferreira Gomes: Araguari River (00°51’34.23”N, 51°10’58.10”W), 2 males, 5 females and 3 females with eggs (IEPA 1627) (Figure 5) Geographic distribution. Colombia, Venezuela and Brazil (states of Amazonas and Pará) and (Kensley & Walker 1982; Melo 2003; Valencia & Campos 2010, Pereira, 1991; Pereira et al.. (2010; Pimentel & Magalhães, 2014). Distribution in Amapá state. Araguari River. Previous records. This paper Ecological notes. The species generally lives in open water with sandy substrate, occurring from small rivers to small streams and seasonal streams (Sakihara et al., 2013). Remarks. the specimens presented here match the descriptions of Kensley & Walker (1982); Melo (2003) and Pimentel & Magalhães (2014)., Published as part of Vieira, Inacia Maria, Silva, Luiz Maurício Abdon, Almeida, Alini Gomes Santiago De, Almeida, Danilo Pelaes De, Silva-Júnior, Orleno Marques & Tavares-Dias, Marcos, 2022, Diversity, distribution and new records of freshwater and estuarine shrimp in the state of Amapá, eastern Brazilian Amazon region, pp. 41-71 in Zootaxa 5178 (1) on page 63, DOI: 10.11646/zootaxa.5178.1.3, http://zenodo.org/record/7021864, {"references":["Kensley, B. & Walker, I. (1982) Palaemonid shrimps from the Amazon basin, Brazil (Crustacea, Decapoda, Natantia). Smithsonian Contributions to Zoology, Washington, 362, 1 - 28.","Melo, G. A. S. (2003) Familias Atyidae, Palaemonidae e Sergestidae. In: Melo, G. A. S. (Ed.), Manual de identificacao dos Crustacea Decapoda de agua doce do Brasil. Editora Loyola, Sao Paulo, pp. 289 - 415.","Valencia, D. M. & Campos, R. (2010) Freshwater shrimps of the Colombian tributaries of the Amazon and Orinoco rivers (Palaemonidae, Euryrhynchidae, Sergestidae). Caldasia, 32 (1), 221 - 234.","Pereira, G. (1991) Camarones de agua dulce de Venezuela II: Nuevas adiciones en las familias Atyidae y Palaemonidae (Crustacea: Decapoda: Caridea). Acta Biologica Venezuelica, 13 (1 / 2), 75 - 88.","Pimentel, F. R. & Magalhaes, C. (2014) Palaemonidae, Euryrhynchidae, and Sergestidae (Crustacea: Decapoda): Records of native species from the states of Amapa and Para, Brazil, with maps of geographic distribution. Check List, 10 (6), 1300 - 1315. https: // doi. org / 10.15560 / 10.6.1300","Sakihara, T. S., Fransen, C. H. & De Grave, S. (2013) New records of Vetericaris chaceorum (Decapoda, Procarididea) from Hawai'i. Crustaceana, 86 (5), 625 - 631."]}

This study presents the freshwater and estuarine shrimp species that occur in the state of Amapá, in the eastern region of the Brazilian Amazon. The data were obtained through information contained in the Brazilian crustacean collections of the Institute of Scientific and Technological Research of the State of Amapá (IEPA) and the National Institute for Research in the Amazon (INPA) and the detailed examination of the listed specimens. All information contained in the log book and specimen labels were noted for the identification and mapping of occurrence areas in the region. A survey in the literature of the species previously recorded for Amapá was carried out. The diversity of freshwater and estuarine shrimp was composed of 21 species distributed in the following families: Alpheidae (Alpheus nuttingi), Euryrhynchidae (Euryrhynchus amazoniensis, Euryrhynchus burchelli, Euryrhynchus tomasi and Euryrhynchus wrzesniowskii), Lysmatidae (Exhippolysmata oplophoroides), Palaemonidae (Macrobrachium acanthurus, Macrobrachium amazonicum, Macrobrachium brasiliense, Macrobrachium carcinus, Macrobrachium jelskii, Macrobrachium inpa, Macrobrachium olfersii, Macrobrachium surinamicum, Nematopalemon schmitti, Palaemon carteri, Pseudopalaemon amazoniensis, Pseudopalaemon chryseus, Leander tenuicornis), Penaeidae (Xiphopenaeus kroyeri and Sergestidae) (Acetes marinus and Acetes paraguayensis). Alpheus nuttingi and L. tenuicornis were new records for the state of Amapá. This study contributes to the knowledge of the diversity and geographic distribution of decapod crustaceans in Amapá and highlights areas where there are gaps in collection, thus contributing to a better understanding of these invertebrates in the region.

Species: Urocaridella antonbruunii (Bruce, 1967) (Figs. 2–5) Periclimenes antonbruunii: Bruce, 1967, p. 45–53, fig. 19–22; 1971, p. 10 Urocaridella antonbruunii: Chace & Bruce, 1993: 42. – Bruce & Coombes, 1995: 103. – Bruce, 1996: 203, fig. 1f, 29a, and 31. – Jeng, 1998: 119. – Debelius, 1999: 173. – Davie, 2002: 301. – Li et al., 2004: 525, fig. 13. – Li & Bruce, 2006: 221. – Anker & De Grave, 2016: 428, fig. 108. Material examined: NBFGR/PALUANT-01, Female (CL 5 mm), Bay of Bengal, Off Gulf of Mannar, Tamil Nadu, India, 8°42′ N, 78°24′ E, 1–3.0 m depth, December 2019. Additional: 6 Female CL 3–5 mm, 4 Male CL 3–3.5 mm Off Gulf of Mannar, India, Bay of Bengal. 1 Female CL 6 mm, 1 male CL 4 mm, Lakshadweep Island, India, Arabian Sea, 10°50′ N, 72°10′ E, 0.5–1.0 m feet, November 2019. Diagnosis: Rostrum (Fig. 2) long, slender, deeply curved upwards, overreaching distal margin of scaphocerite, about 1.5–1.72 times as long as carapace. The rostrum dorsally armed with three pairs of strong teeth (Basal, Middle and Distal) with an epigastric tooth, ventrally armed with 9–10 teeth and long plumose setae (Figs. 3A, B). Carapace smooth with a well-developed antennal spine, about 1.5 times as long as broad; orbital angle rounded, ventrally produced a lobe blindly; pterygostomial margin simply rounded; branchiostegal spine prominent, situated far from the anterior margin of carapace. Third abdominal tergite (Figs. 3C, D), somewhat sub-rectangular in dorsoposteriorly and laterally compressed; fourth and fifth abdominal tergite normally rounded in dorsoposteriorly, produced leaf-like extension at posteroventrally; sixth abdominal segment elongate, about 2.1–2.25 times as long as the fifth segment with sharp posteroventral angle. Telson (Figs. 3C, D) 0.75–0.8 times as long as the sixth abdominal segment with two pairs of movable spines dorsally, three pairs of distal spines on posterior margin. Third maxilliped slender, reaching near to the middle of scaphocerite; penultimate segment about 1.7–1.83 times as long as an antepenultimate segment. The first pereiopod slightly overreached the distal end of scaphocerite, fingers subequal to palm length, carpus about 1.7–1.8 times as long as a chela (Fig. 4A). Second pereiopod slender, extended beyond the scaphocerite by chela; fingers almost subequal to palm and shorter than carpus (Fig. 4B). Ambulatory pereiopods (Figs. 4 C-E) are long and slender, propodus with 3–4 ventral spiniform setae with biunguiculate dactylus. The third pereiopod extended beyond the distal part of scaphocerite by half of the carpus and dactylus, carpus about 5.8–6.6 times as long as dactylus. The fourth and fifth pereiopods elongated further on the scaphocerite by the length of carpus and dactylus, carpus about 6.0–7.25 times as long as dactylus. Colouration in Life: The carapace and abdomen (Fig. 5) are transparent with scattered red and white patches. The rostrum is transparent with red and white bands terminally. Eyes are translucent, eyestalk with few red dots. Antennal scaphocerite is almost transparent with a red margin laterally. The base of the epigastric tooth is red with white patches. Third abdominal tergites produced posterodorsally with vertical white and red bands. Pleopods are fully transparent, pereiopods are semi-transparent with white and red bands. The base of telson and uropods with a red band and white patches dorsally. Inner uropods are transparent with red patches anteriorly. Outer uropods with white and red bands posteriorly. Distribution and ecology: Urocaridella antonbruunii were initially described from the Comoro Islands (type locality) of the western Indian Ocean. Subsequently, this species was reported widely in the shallow water regions of the Indo-west Pacific Ocean: Kenya, La Reunion, South China Sea, Singapore, Japan, Australia, New Caledonia, Loyalty Islands, Palau and Hawaii. Currently, the distribution of the species was noticed in Indian waters. The present specimens were collected in the bottom curve of the coral boulder at shallow water regions of the Gulf of Mannar and Agatti Island, Lakshadweep. In Agatti Island, these specimens were noticed with the assemblage of U. arabianensis and pipefish (Doryrhamphus sp) in the bottom of dead coral. Remarks: The morphology of U. antonbruunii in the present study is closely agreed with the original description and illustrations of Bruce (1967) from the Comoro Islands with a minute variation on the length and dentition of rostrum, length ratio of carpus and palm of first and second pereiopod and length ratio of propodus and dactylus of ambulatory pereiopods. Furthermore, this is the first report from the Indian waters, especially from Agatti Island, Lakshadweep, and the Gulf of Mannar. Even though, slight variation was noticed between Agatti and Gulf of Mannar specimens, which were intra-specific and noticeable. Agatti specimen have 2+2+2/10 teeth on the rostrum, the ratio of rostrum and carapace was 1.7 and ratio of the telson and sixth abdominal somite was 0.8, wherein specimens of Gulf of Mannar, rostral dentition was 2+2+2/9, rostrum 1.5–1.66 times longer than carapace and telson was 0.75 times as long as the sixth somite. Similarly, the different rostral formula was noticed in many locations for U. antonbruunii, where 2+2+1/ 6 in the Comoro Islands (Bruce 1967), (1-3) + 2 + (2-3)/ 8 -12 in New Caledonia (Bruce, 1996), 2 + 2 + (1-2)/ 6-8 in South China (Li et al., 2004). Also, in the present Indian specimen, the ratio of propodus and dactylus of third pereiopods are slightly higher (5.8–6.6 times) than the previous reports (4–4.5 times; Bruce, 1967, 1996; Li et al., 2004). Urocaridella antonbruunii is morphologically closest to U. urocaridella, U. cyrtorhyncha, U. pulchella and U. arabianensis. However, the ratio of the rostral and carapace, different segments of the maxilliped, pereiopods and third abdominal dorsal structure have differed between these species. The rostrum length of U. antonbruunii is 1.5–1.72 times as long as the carapace length, which was notably different with U. cyrtorhyncha (1.8 times), U. urocaridella (2.0 times) and U. arabianensis (1.7–2.1 times). The third abdominal dorsal structure is produced triangularly or sub-rectangular profile in U. antonbruunii, whereas expanded and rounded dorsal profile in U. cyrtorhyncha, prominent, rounded, sub-rectangular profile in U. pulchella, nearly sub-rectangular dorsal profile in U. urocaridella and produced dorsoposteriorly and rounded profile in U. arabianensis. The ratio of carpus and palm of first and second pereiopods are 2.8 and 1.26 times in U. antonbruunii which compared 1.5 and 1.0 times for U. cyrtorhyncha, 1.5 times for U. pulchella (Second pereiopod only), 1.0 and much shorter for U. urocaridella, 2.5 and 1.8 times for U. arabianensis, respectively. Moreover, U. cyrtorhyncha is very similar to U. antonbruunii due that Bruce & Coombes (1995) considered Leandrites cyrtorhynchus Fujino & Miyake, 1969 as a synonym of U. antonbruunii (Bruce, 1967). However, Okuno (1994) and Hayashi (2000) accepted U. cyrtorhyncha as different species. Furthermore, Ďuriš (2017) found few morphological differences in U. cyrtorhyncha, which have 2 sub-apical dorsal teeth on the rostrum, dactylus of third to fifth pereiopods were not biunguiculated and proximal third of the cutting edge of second pereiopods with a tooth. However, present Indian specimens of U. antonbruunii have 2 sub-apical dorsal teeth on the rostrum, which is similar with the observation of Bruce (1996) and Li et al. (2004)., Published as part of Paramasivam, Purushothaman, Madhavan, Manu, Ajith Kumar, T. T. & Lal, Kuldeep Ku- Mar, 2022, New record of Urocaridella antonbruunii (Bruce, 1967) from Southern India with taxonomic Keys of Urocaridella Borradaile, 1915 (Decapoda; Palaemonidae), pp. 563-574 in Zootaxa 5138 (5) on pages 566-570, DOI: 10.11646/zootaxa.5138.5.4, http://zenodo.org/record/6571907, {"references":["Bruce, A. J. (1967) Notes on Some Indo-Pacific Pontoniinae III-IX Description of Some New Genera and Species from the Western Indian Ocean and the South China Sea. Zoologische Verhandelingen, 87, 1 - 73.","Chace, Jr. F. A. & Bruce, A. J. (1993) The caridean shrimps (Crustacea: Decapoda) of the Albatross Philippine expedition 1907 - 1910, part 6: superfamily Palaemonoidea. Smithsonian contributions to zoology, 543, 1 - 152. https: // doi. org / 10.5479 / si. 00810282.543","Bruce, A. J. & Coombes, K. E. (1995) The palaemonoid shrimp fauna (Crustacea: Decapoda: Caridea) of the Cobourg Peninsula, Northern Territory. The Beagle, Records of the Museums and Art Galleries of the Northern Territory, 12, 101 - 144. https: // doi. org / 10.5962 / p. 264281","Bruce, A. J. (1996) Crustacea Decapoda: palaemonoid shrimps from the Indo-West Pacific region mainly from New Caledonia. Resultats des campagnes MUSORSTOM, 15, 197 - 267.","Jeng, M. S. (1998) Shrimps and crabs of the Kentin National Park. The Kentin National Park, Ping-Tong, Taiwan, 133 pp. [in Chinese]","Debelius, H. (1999) Crustacea guide of the World: Atlantic Ocean, Indian Ocean, Pacific Ocean. Ikan, Frankfurt, 320 pp.","Davie, P. J. F. (2002) Crustacea: Malacostraca: Phyllocarida, Hoplocarida, Eucarida, Part 1, Vol. 19.3 A. In: Wells, A. & Houston, W. W. K (Eds.), Australian Biological Resources Study. IV: Zoological catalogue of Australia. CSIRO Publishing, Clayton, pp. i - xii + 1 - 551.","Li, X., Bruce, A. J. & Manning, R. B. (2004) Some palaemonid shrimps (Crustacea: Decapoda) from the northern South China Sea, with descriptions of two new species. Raffles Bulletin of Zoology, 52 (2), 513 - 553.","Li, X. & Bruce, A. J. (2006) Further Indo-West Pacific palaemonoid shrimps (Crustacea: Decapoda: Palaemonoidea), principally from the New Caledonian region. Journal of Natural History, 40 (11 - 12), 611 - 738. https: // doi. org / 10.1080 / 00222930600763627","Anker, A. & De Grave, S. (2016) An updated and annotated checklist of marine and brackish caridean shrimps of Singapore (Crustacea, Decapoda). Raffles Bulletin of Zoology, 34, 343 - 454.","Fujino, T. & Miyake, S. (1969) On two new species of palaemonid shrimps from Tanabe Bay, Kii Peninsula, Japan (Crustacea, Decapoda, Palaemonidae). Publications from the Seto Marine Biological Laboratory, 17, 143 - 154. https: // doi. org / 10.5134 / 175597","Okuno, J. (1994) Notes on the shrimps of the genus Urocaridella Borradaile, 1915 from Japan. IOP Div News, 5 (10), 4 - 5.","Hayashi, K. (2000) Prawns, shrimps and lobsters from Japan (115). Palaemonidae, subfamily Palaemoninae - genus Urocaridella and subfamily Pontoniinae - genus Paratypton. Aquabiology, 22, 570 - 574.","Duris Z. (2017) Palaemonid shrimps (Crustacea: Decapoda) of Saudi Arabia from the ' Red Sea biodiversity survey' 2011 - 2013 with 11 new records for the Red Sea. Marine Biodiversity, 47 (4), 1147 - 1161. https: // doi. org / 10.1007 / s 12526 - 017 - 0681 - 8"]}

Updated Keys to the members of Urocaridella Borradaile, 1915 1 Rostrum with more than 6 teeth dorsally; telson ending narrow triangular structure in posteriorly; mandible with well-developed two-segmented palp; first pereiopod with chela>2.0 times as long as carpus, fingers longer than the palm length; second pereiopod with the length of palm longer than carpus, fingers markedly longer than palm; propodus of third to fifth pereiopods less than four times as long as dactylus......................................................... U. urocaridella — Rostrum with less than or 6 teeth dorsally; telson ending simple triangular form without narrow structure in posteriorly; mandible without palp or a vestige of pale; first pereiopod with chela shorter than carpus, the length of fingers subequal or equal to palm length; second pereiopod with palm length not longer than carpus, the length of fingers less than or sub-equal to palm; propodus of third to fifth pereiopods more than four times of dactylus............................................ 2 2. Third abdominal somite produced posteriorly with a big triangular cap structure overhanging on 4 th abdominal somite; distal end of telson with two pairs of spines................................................................. U. liui — Third abdominal somite produced posteriorly with expanded or sub-rectangular dorsal margin, not overhanging posterior part of the somite; distal end of telson with three pairs of spines.................................................... 3 3. Branchiostegal spine removed from the margin by not more than the length of spine; fifth abdominal somite strongly acute posteroventrally; mandible with a vestige of pale; third to fifth pereiopods with propodus less than 3 ventral spines and one pair of distal spines.............................................................................. U. vestigialis — Branchiostegal spine removed from the margin by more than the length of spine; fifth abdominal somite rounded posterventrally; mandible without palp; third to fifth pereiopods with propodus greater than 3 ventral spines and one pair of distal spines.............................................................................................. 4 4. Third abdominal somite with hump posterior to mid-length and making pleon gibbous...................... U. degravei — Third abdominal somite with rounded ridge medially or with nearly expanded or sub-rectangular posterodorsally......... 5 5. Third abdominal somite nearly subrectangular dorsal profile in posteriorly and compressed laterally; dactylus of third to fifth pereiopods are biunguiculate................................................................ U. antonbruunii — Third abdominal somite with rounded ridge medially or with nearly expanded, not compressed laterally; dactylus of third to fifth pereiopods are not biunguiculate..................................................................... 6 6. Sixth abdominal somite greater than 2.0 times as long as the fifth somite; third to fifth pereiopods with propodus more than 7 ventral spines and propodus greater than 7 times as long as dactylus................................. U. arabianensis — Sixth abdominal somite less than 2.0 times as long as the fifth somite; third to fifth pereiopods with propodus lesser than 7 ventral spines and propodus lesser than 7 times as long as dactylus.............................................. 7 7. Third abdominal somite with prominent, rounded ridge medially, subrectangular in profile; carpus second pereiopod 1.5 times as long as palm.............................................................................. U. pulchella — Third abdominal somite more or less expanded and rounded posterodorsally; carpus of second pereiopod equal to palm length....................................................................................... U. cyrtorhyncha, Published as part of Paramasivam, Purushothaman, Madhavan, Manu, Ajith Kumar, T. T. & Lal, Kuldeep Ku- Mar, 2022, New record of Urocaridella antonbruunii (Bruce, 1967) from Southern India with taxonomic Keys of Urocaridella Borradaile, 1915 (Decapoda; Palaemonidae), pp. 563-574 in Zootaxa 5138 (5) on pages 571-572, DOI: 10.11646/zootaxa.5138.5.4, http://zenodo.org/record/6571907

Macrobrachium olfersii (Wiegmann, 1836) (Fig. 8F) Palaemon olfersii Wiegmann, 1836: 150. Material examined. Brazil, São Paulo: 2 ♂, 8 ♀ (5 ♀ ov), 15 adults, 24 j, CCDB 3469, Ubatuba, Rio Puruba, colls. F. Mantelatto et al., 06.vii.2011; 1 ♂, CCDB 5250, Ubatuba, Rio da Praia do Lamberto, colls. F. Carvalho et al., 22.iv.2012; 1 ♂, 5 ♀ (4 ♀ ov), CCDB 5976, Ubatuba, Rio Praia do Lamberto, colls. F. Carvalho et al., 09.iv.2013; 1 ♂, CCDB 2138, São Sebastião, Rio do Curral, colls. F. Mantelatto et al., 26.vi.2006; 6 ♂, 1 ♀, CCDB 3142, Ilhabela (Ilha de São Sebastião), Rio Castelhano, colls. F. Mantelatto et al., 21.ii.2011; 2 ♂, 7 ♀ (3 ♀ ov), 96 j, CCDB 3749, Santos, Rio Preto, colls. F. Carvalho et al., 23.x.2011; 5 ♂, 6 ♀ (1 ♀ ov), 1 j, CCDB 3750, Santos, Rio Branco, colls. F. Carvalho et al., 23.x.2011; 2 ♂, CCDB 5342, Praia Grande, Rio Branco, colls. N. Rossi et al., 23.x.2011; 6 ♂, 5 ♀ (1 ♀ ov), CCDB 3215, Pariquera-Açú, Rio Iririaia-Mirim, colls. F. Mantelatto et al., 18.iv.2011; 5 ♂, 8 ♀ (5 ♀ ov), 4 j, CCDB 3670, Cananéia, tributary of the Rio Baguaçu, colls. T. Magalhães et al., 10.xi.2011; 4 ♂, 10 ♀ (8 ♀ ov), 12 adults, 49 j, CCDB 318, Cananéia, Rio Itapitangui, colls. F. Mantelatto et al., 29.viii.2011. Distribution. Western Atlantic— USA (North Carolina, Florida, Mississipi, Louisiana, Texas), Mexico, Puerto Rico, Curaçao, Bonaire, Guatemala, Nicaragua, Costa Rica, Panama, Colombia, Venezuela, Guyana, Suriname, French Guiana, and Brazil (Amapá, Pará, Piauí, Ceará, Rio Grande do Norte, Pernambuco, Alagoas, Sergipe, Bahia, Espírito Santo, Rio de Janeiro, São Paulo, Paraná, Santa Catarina, Rio Grande do Sul) (von Ihering 1897; Moreira 1901; Rathbun 1901; Luederwaldt 1929; Sawaya 1946; Holthuis 1952a, 1959; Coelho 1963; Anderson & Fillingame 1980; Rodriguez 1980; Williams 1984; Abele & Kim 1986, 1989; Bond-Buckup & Buckup 1989, 1999; Coelho et al. 1990; Pereira de Barros & Braun 1997; Ramos-Porto & Coelho 1998; Bowles et al. 2000; Valencia & Campos 2007; Rossi & Mantelatto 2013; Poupin 2018). Remarks. Previous records from the coast of São Paulo include Ubatuba, Caraguatatuba, São Sebastião, Ilhabela (Ilha de São Sebastião e Ilha dos Búzios), Cubatão, Santos, Peruíbe, Pariquera-Açu, Iguape, Ilha Comprida, and Cananéia (Ilha do Cardoso) (von Ihering 1897 as Palaemon olfersi; Luederwaldt 1929; Sawaya 1946; Rocha & Bueno 2004; Melo & Brossi-Garcia 2005 as Macrobrachium birai; Ferreira et al. 2010; Pileggi & Mantelatto 2010, 2012; Pileggi et al. 2014; Mossolin et al. 2016). Due numerous examples in the literature (taxonomic and non-taxonomic studies) of spelling variants, the correct spelling of this species was standardized to M. olfersii (see Rossi et al. 2016 for details). Sequences accession number (GenBank): CCDB 2138—16S (GU929466), COI (GU929554) (Vergamini et al. 2011)., Published as part of Mantelatto, Fernando L. & Al, Et, 2022, Checklist of decapod crustaceans from the coast of the São Paulo state (Brazil) supported by integrative molecular and morphological data: V. Dendrobranchiata and Pleocyemata [Achelata, Astacidea, Axiidea, Caridea (Alpheoidea and Processoidea excluded), Gebiidea, Stenopodidea], pp. 1-74 in Zootaxa 5121 (1) on pages 37-38, DOI: 10.11646/zootaxa.5121.1.1, http://zenodo.org/record/6399728, {"references":["Wiegmann, A. F. A. (1836) Beschreibung einiger neuen Crustaceen des Berliner Museums aus Mexico und Brasilien. Archiv Fur Naturgeschicthe, 2 (1), 145 - 151.","Ihering, H. von (1897) Os camaroes de agua doce do Brazil. Revista do Museu Paulista, 2, 421 - 432.","Moreira, C. (1901) Contribuicoes para o conhecimento da fauna brazileira: Crustaceos do Brazil. Archivos do Museu Nacional do Rio De Janeiro, 11, 1 - 151. https: // doi. org / 10.5962 / bhl. title. 46376","Rathbun, M. J. (1901) Investigations of the Aquatic Resources and Fisheries of Porto Rico by the United States Fish Commission Steamer Fish Hawk in 1899. The Brachyura and Macrura of Porto Rico. Bulletin of the United States Fish Commission, 20, 1 - 127. 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(Ed.), Catalog of Crustacea from Brazil, Museu Nacional, Rio de Janeiro, 6, pp. 387 - 392","Bowles, D. E., Aziz, K. & Knight, C. L. (2000) Macrobrachium (Decapoda: Caridea: Palaemonidae) in the contiguous United States: a review of the species and an assessment of threats to their survival. Journal of Crustacean Biology, 20 (1), 158 - 171. https: // doi. org / 10.1163 / 20021975 - 99990025","Valencia, D. & Campos, M. R. (2007) Freshwater prawns of the genus Macrobrachium Bate, 1868 (Crustacea: Decapoda: Palaemonidae) of Colombia. Zootaxa, 1456 (1), 1 - 44. https: // doi. org / 10.11646 / zootaxa. 1456.1.1","Rossi, N. & Mantelatto, F. L. (2013) Molecular analysis of the freshwater prawn Macrobrachium olfersii (Decapoda, Palaemonidae) supports the existence of a single species throughout its distribution. PLoS ONE, 8 (1), e 54698. https: // doi. org / 10.1371 / journal. pone. 0054698","Poupin, J. (2018) Les Crustaces decapodes des Petites Antilles: Avec de nouvelles observations pour Saint-Martin, la Guadeloupe et la Martinique. Museum national d'Histoire naturelle, Paris, 264 pp.","Rocha, S. S. & Bueno, S. L. S. (2004) Crustaceos decapodes de agua doce com ocorrencia no Vale do Ribeira de Iguape e rios costeiros adjacentes, Sao Paulo, Brasil. Revista Brasileira de Zoologia, 21 (4), 1001 - 1010. https: // doi. org / 10.1590 / S 0101 - 81752004000400038","Melo, S. G. & Brossi-Garcia, A. L. (2005) Desenvolvimento larval de Macrobrachium birai Lobao, Melo & Fernandes, 1986 (Crustacea, Decapoda, Caridea, Palaemonidae) em laboratorio. Revista Brasileira de Zoologia, 22 (1), 131 - 152. https: // doi. org / 10.1590 / S 0101 - 81752005000100016","Ferreira, R. S., Vieira, R. R. R. & D'Incao, F. (2010) The marine and estuarine shrimps of the Palaemoninae (Crustacea: Decapoda: Caridea) from Brazil. Zootaxa, 2606 (1), 1 - 24. https: // doi. org / 10.11646 / zootaxa. 2606.1.1","Pileggi, L. G. & Mantelatto, F. L. (2010) Molecular phylogeny of the freshwater prawn genus Macrobrachium (Decapoda, Palaemonidae), with emphasis on the relationships among selected American species. Invertebrate Systematics, 24 (1), 194 - 208. https: // doi. org / 10.1071 / IS 09043","Pileggi, L. G. & Mantelatto, F. L. (2012) Taxonomic revision of doubtful Brazilian freshwater shrimp species of genus Macrobrachium (Decapoda, Palaemonidae). Iheringia, Serie Zoologia, 102 (4), 426 - 437. https: // doi. org / 10.1590 / S 0073 - 47212012005000012","Pileggi, L. G., Rossi, N., Wehrtmann, I. S. & Mantelatto, F. L. (2014) Molecular perspective on the American transisthmian species of Macrobrachium (Caridea, Palaemonidae). ZooKeys, 457, 79 - 108. https: // doi. org / 10.3897 / zookeys. 457.6818","Mossolin, E. C., Pileggi, L. G. & Mantelatto, F. L. (2016) Crustacea, Decapoda, Palaemonidae, Macrobrachium Bate, 1868, Sao Sebastiao Island, state of Sao Paulo, southeastern Brazil. Check List, 6 (4), 605 - 613. https: // doi. org / 10.15560 / 6.4.605","Rossi, N., De Grave, S. & Mantelatto, F. L. (2016) A note on the correct spelling of the name of the freshwater shrimp Macrobrachium olfersii (Wiegmann, 1836) (Decapoda, Palaemonidae. Zootaxa, 4114 (5), 587 - 589. https: // doi. org / 10.11646 / zootaxa. 4114.5.6","Vergamini, F. G., Pileggi, L. A. & Mantelatto, F. L. (2011) Genetic variability of the Amazon River prawn Macrobrachium amazonicum (Decapoda, Caridea, Palaemonidae). Contributions to Zoology, 80, 67 - 83. https: // doi. org / 10.1163 / 18759866 - 08001003"]}

Macrobrachium carcinus (Linnaeus, 1758) (Fig. 8D) Cancer carcinus Linnaeus, 1758: 631. Material examined. Brazil, São Paulo: 1 ♀, CCDB 3453, Ubatuba, road Pier Itaguá, colls. F. Mantelatto et al., 06.xii.2011; 1 ♂, CCDB 2136, Ubatuba, Rio Praia do Lamberto, colls. L. Pileggi & A. Costa, 25.iv.2005; 1 ♂, 1 ♀, CCDB 2486, Ubatuba, Rio Praia do Lamberto, colls. L. Pileggi & A. Costa, 03.v.2007; 1 ♂, CCDB 2141, São Sebastião, Rio Guaecá, colls. F. Mantelatto et al., 0l. xi.2004; 2 ♀ ov, CCDB 2144, São Sebastião, Rio Paúba, coll. A. Meireles, iii. 2006; 1 ♂, 1 ♀, CCDB 2121, Ilhabela (Ilha de São Sebastião), Rio da Toca, coll. E. Mossolin, 12.xi.2007; 1 ♀, CCDB 2163, Ilhabela (Ilha de São Sebastião), coll. E. Mossolin, 13.xii.2006; 1 ♂, CCDB 2162, Ilhabela (Ilha de São Sebastião), Estrada Praia Jabaquara, coll. E. Mossolin, 22.ix.2006; 1 ♂, CCDB 2161, Ilhabela (Ilha de São Sebastião), Rio Praia Jabaquara, coll. E. Mossolin, 22.ix.2006. Distribution. Western Atlantic— USA (Florida, Mississipi, Texas), Mexico, Cuba, Haiti, Jamaica, Puerto Rico, Saint Martin, U.S. Virgin Islands, Antigua and Barbuda, Guadeloupe, Dominica, Martinique, St. Lucia, St. Vicent and the Grenadines, Barbados, Grenada, Aruba, Curaçao, Bonaire, Trinidad and Tobago, Guatemala, Nicaragua, Costa Rica, Panama, Colombia, Venezuela, Guyana, Suriname, and Brazil (Amapá, Pará, Piauí, Ceará, Rio Grande do Norte, Paraíba, Pernambuco, Alagoas, Sergipe, Bahia, Espírito Santo, Rio de Janeiro, São Paulo, Paraná, Santa Catarina, Rio Grande do Sul) (Smith 1869; von Ihering 1897; Moreira 1901; Rathbun 1901; Luederwaldt 1929; Sawaya 1946; Holthuis 1952a, 1959; Hart 1961; Coelho 1963; Mistakidis 1966; Chace & Hobbs 1969; Chace 1972; Anderson & Fillingame 1980; Rodriguez 1980; Abele & Kim 1986, 1989; Bond-Buckup & Buckup 1989, 1999; Coelho et al. 1990; Lopes & Pereira 1994; Ramos-Porto & Coelho 1998; Bowles et al. 2000; Valencia & Campos 2007; Sampaio et al. 2009; Ferreira et al. 2010; Pileggi & Mantelatto 2010; Pileggi et al. 2014; Poupin 2018; Moraes et al. 2021). Remarks. Previous records from the coast of São Paulo include Ubatuba, São Sebastião, Ilhabela (Ilha de São Sebastião e Ilha dos Búzios), Bertioga, Cubatão, Santos, São Vicente, Itanhaém, Peruíbe, Registro, Iguape, and Cananéia (von Ihering 1897 as Palaemon jamaicensis; Luederwaldt 1929; Sawaya 1946 as M. jamaicense; Rocha & Bueno 2004; Ferreira et al. 2010; Pileggi & Mantelatto 2010; Pileggi et al. 2014; Mossolin et al. 2016 as M. carcinus). Sequences accession number (GenBank): CCDB 2136—16S (HM352449), COI (HM352491) (Pileggi & Mantelatto 2010)., Published as part of Mantelatto, Fernando L. & Al, Et, 2022, Checklist of decapod crustaceans from the coast of the São Paulo state (Brazil) supported by integrative molecular and morphological data: V. Dendrobranchiata and Pleocyemata [Achelata, Astacidea, Axiidea, Caridea (Alpheoidea and Processoidea excluded), Gebiidea, Stenopodidea], pp. 1-74 in Zootaxa 5121 (1) on pages 36-37, DOI: 10.11646/zootaxa.5121.1.1, http://zenodo.org/record/6399728, {"references":["Linnaeus, C. (1758) Systema naturae per regna tria naturae, secundum classes, ordines, genera, species, cum characteribus, differentiis, synonymis, locis. Ed. 10, 1, 824 pp. https: // doi. org / 10.5962 / bhl. title. 542","Smith, S. I. (1869) Notice of the Crustacea collected by Prof. C. F. Hartt on the coast of Brazil in 1867. Transactions of the Connecticut Academy of Arts and Sciences, 2, 1 - 42. https: // doi. org / 10.5962 / bhl. part. 20634","Ihering, H. von (1897) Os camaroes de agua doce do Brazil. Revista do Museu Paulista, 2, 421 - 432.","Moreira, C. (1901) Contribuicoes para o conhecimento da fauna brazileira: Crustaceos do Brazil. Archivos do Museu Nacional do Rio De Janeiro, 11, 1 - 151. https: // doi. org / 10.5962 / bhl. title. 46376","Rathbun, M. J. (1901) Investigations of the Aquatic Resources and Fisheries of Porto Rico by the United States Fish Commission Steamer Fish Hawk in 1899. The Brachyura and Macrura of Porto Rico. Bulletin of the United States Fish Commission, 20, 1 - 127. [for 1900, preprint dated 1901, published in 1902]","Luederwaldt, H. (1929) Resultados de uma excursao cientifica a Ilha de Sao Sebastiao no litoral do Estado de Sao Paulo em 1925. Revista do Museu Paulista, 16, 1 - 79.","Sawaya, M. P. (1946) Sobre alguns camaroes dagua doce do Brasil. Boletim da Faculdade de Filosofia Ciencias e Letras da Universidade de Sao Paulo, Zoologia, 11, 393 - 408. https: // doi. org / 10.11606 / issn. 2526 - 4877. bsffclzoologia. 1946.125307","Holthuis, L. B. (1952 a) A general revision of the Palaemonidae (Crustacea, Decapoda, Natantia) of the Americas. II. The Subfamily Palaemonidae. Occasional Papers of the Allan Hancock Foundation, 12, 1 - 396.","Holthuis, L. B. (1959) The Crustacea Decapoda of Suriname (Dutch Guiana). Zoologische Verhandelingen, 44, 1 - 296.","Hart, C. W. Jr. (1961) The freshwater shrimps (Atyidae and Palaemonidae) of Jamaica. W. I, with a discussion of their relation to the ancient geography of the Western Caribbean area. Proceedings of the Academy of Natural Sciences of Philadelphia, 113 (4), 61 - 80.","Coelho, P. A. (1963) Observacoes preliminares sobre a biologia e a pesca dos camaroes do genero Macrobrachium Bate, 1868 (Decapoda: Palaemonidae) no Estado de Pernambuco. Trabalhos Oceanograficos da Universidade Federal de Pernambuco, 3 (1), 75 - 81. https: // doi. org / 10.5914 / tropocean. v 3 i 1.2487","Chace F. A. Jr. & Hobbs H. H. Jr. (1969) The freshwater and terrestrial decapod crustaceans of the West-Indies with special reference to Dominica. Bulletin of the United States National Museum, 292, 1 - 258. https: // doi. org / 10.5479 / si. 03629236.292.1","Chace, F. A. Jr. (1972) The shrimps of the Smithsonian-Bredin Caribbean Expeditions with a summary of the West-Indian shal- low-water species (Crustacea: Decapoda: Natantia). Smithsonian Contributions to Zoology, 98, 1 - 179. https: // doi. org / 10.5479 / si. 00810282.98","Anderson, G. & Fillingame, J. A. (1980) The occurrence of Macrobrachium olfersi (Wiegmann, 1836) and M. carcinus (Linnaeus, 1758) in southern Mississipi, USA (Decapoda: Palaemonidae). Crustaceana, 39 (1), 90 - 94. https: // doi. org / 10.1163 / 156854080 X 00319","Rodriguez, G. (1980) Los crustaceos decapodos de Venezuela. Caracas, Instituto Venezolano de Investigaciones Cientificas, 494 pp.","Abele, L. G. & Kim, W. (1986) An illustrated guide to the marine decapod crustaceans of Florida. Florida Department of Environmental Regulation, Technical Series, 8 (1 - 2), 1 - 760.","Abele, L. G. & Kim, W. (1989) The decapod crustaceans of the Panama Canal. Smithsonian Contributions to Zoology, 482, 1 - 50. https: // doi. org / 10.5479 / si. 00810282.482","Bond-Buckup, G. & Buckup, L. (1989) Os Palaemonidae de aguas continentais do Brasil meridional (Crustacea: Decapoda). Revista Brasileira de Biologia, 49 (4), 883 - 896.","Bond-Buckup, G. & Buckup, L. (1999) Caridea (pitus, camaroes de agua doce e marinhos). In: Buckup, L. & Bond-Buckup, G. (Eds.), Os crustaceos do Rio Grande do Sul. Ed. UFRGS, Porto Alegre, pp. 300 - 318.","Coelho, P. A., Ramos-Porto, M. & Melo, G. A. S. (1990) Crustaceos decapodos do estado de Alagoas. Anais da Sociedade Nordestina de Zoologia, 3, 21 - 34.","Coelho, P. A. & Ramos-Porto, M. (1998) Malacostraca-Eucarida. Palinuridae. In: Young, P. S. (Ed.), Catalog of Crustacea from Brazil, Museu Nacional, Rio de Janeiro, 6, pp. 387 - 392","Bowles, D. E., Aziz, K. & Knight, C. L. (2000) Macrobrachium (Decapoda: Caridea: Palaemonidae) in the contiguous United States: a review of the species and an assessment of threats to their survival. Journal of Crustacean Biology, 20 (1), 158 - 171. https: // doi. org / 10.1163 / 20021975 - 99990025","Valencia, D. & Campos, M. R. (2007) Freshwater prawns of the genus Macrobrachium Bate, 1868 (Crustacea: Decapoda: Palaemonidae) of Colombia. Zootaxa, 1456 (1), 1 - 44. https: // doi. org / 10.11646 / zootaxa. 1456.1.1","Sampaio, S. R., Nagata, JK, Lopes, O. L. & Masunari, S. (2009) Camaroes de aguas continentais (Crustacea, Caridea) da Bacia do Atlantico oriental paranaense, com chave de identificacao tabular. Acta Biologica Paranaense, 38, 11 - 34. https: // doi. org / 10.5380 / abpr. v 38 i 0.15974","Ferreira, R. S., Vieira, R. R. R. & D'Incao, F. (2010) The marine and estuarine shrimps of the Palaemoninae (Crustacea: Decapoda: Caridea) from Brazil. Zootaxa, 2606 (1), 1 - 24. https: // doi. org / 10.11646 / zootaxa. 2606.1.1","Pileggi, L. G. & Mantelatto, F. L. (2010) Molecular phylogeny of the freshwater prawn genus Macrobrachium (Decapoda, Palaemonidae), with emphasis on the relationships among selected American species. Invertebrate Systematics, 24 (1), 194 - 208. https: // doi. org / 10.1071 / IS 09043","Pileggi, L. G., Rossi, N., Wehrtmann, I. S. & Mantelatto, F. L. (2014) Molecular perspective on the American transisthmian species of Macrobrachium (Caridea, Palaemonidae). ZooKeys, 457, 79 - 108. https: // doi. org / 10.3897 / zookeys. 457.6818","Poupin, J. (2018) Les Crustaces decapodes des Petites Antilles: Avec de nouvelles observations pour Saint-Martin, la Guadeloupe et la Martinique. Museum national d'Histoire naturelle, Paris, 264 pp.","Moraes, A. B. D., Moraes, D. C. S., Alencar, C. E. R. D., Pinheiro, A. P., Lima, S. M. Q. & Freire, F. A. M. (2021) Macrobrachium Spence Bate, 1868 (Decapoda: Palaemonidae): new records, range extension and geographic distribution in the northeastern Caatinga amp; coastal drainages, and Sao Francisco hydrographic ecoregions, northeast of Brazil. Zootaxa, 4964 (1), 37 - 60. https: // doi. org / 10.11646 / zootaxa. 4964.1.2","Rocha, S. S. & Bueno, S. L. S. (2004) Crustaceos decapodes de agua doce com ocorrencia no Vale do Ribeira de Iguape e rios costeiros adjacentes, Sao Paulo, Brasil. Revista Brasileira de Zoologia, 21 (4), 1001 - 1010. https: // doi. org / 10.1590 / S 0101 - 81752004000400038","Mossolin, E. C., Pileggi, L. G. & Mantelatto, F. L. (2016) Crustacea, Decapoda, Palaemonidae, Macrobrachium Bate, 1868, Sao Sebastiao Island, state of Sao Paulo, southeastern Brazil. Check List, 6 (4), 605 - 613. https: // doi. org / 10.15560 / 6.4.605"]}

Family Palaemonidae Rafinesque, 1815 Genus Brachycarpus Spence Bate, 1888, Published as part of Mantelatto, Fernando L. & Al, Et, 2022, Checklist of decapod crustaceans from the coast of the São Paulo state (Brazil) supported by integrative molecular and morphological data: V. Dendrobranchiata and Pleocyemata [Achelata, Astacidea, Axiidea, Caridea (Alpheoidea and Processoidea excluded), Gebiidea, Stenopodidea], pp. 1-74 in Zootaxa 5121 (1) on page 34, DOI: 10.11646/zootaxa.5121.1.1, http://zenodo.org/record/6399728, {"references":["Rafinesque, C. S. (1815) Analyse de la nature ou tableau de l'univers et des corps organises. Palermo, 224 pp. https: // doi. org / 10.5962 / bhl. title. 106607","Spence Bate, C. S. (1888) Report on the Crustacea Macrura collected by H. M. S. Challenger during the Years 1873 - 76. In: Murray, J. (Eds.) Zoology. Report on the Scientific Results of the Voyage of H. M. S. Challenger During the Years 1873 - 76 Under the Command of Captain George S. Nares, R. N., F. R. S. and the Late Captain Frank Tourle Thomson, R. N. Wyville Thomson, C. and J. Murray (series eds.) Vol. 24. Edinburgh, Neill and Company. pp. i - xc, 1 - 942."]}

Typton fapespae Almeida, Anker & Mantelatto, 2014 (Fig. 8K) Typton fapespae Almeida, Anker & Mantelatto, 2014: 111, figs. 1–5. Material examined. Brazil, São Paulo: paratype, 1 ♂, CCDB 4486, Ubatuba, Praia do Cedro, coll. F. Zara, 13.viii.2012; paratype, 1 ♀, CCDB 3413, Ubatuba, Praia do Itaguá, coll. I. Leone, 5.iv.2011; 1 ni, CCDB 1096, Ubatuba, Praia do Itaguá, coll. F. Mantelatto, 1.i.2003; 1 ♀ ov (parental with larvae), CCDB 6712, Cananéia, Ilha da Figueira, colls. R. Santos & I. Moraes, 26.xi.2020. Distribution. Western Atlantic— Brazil (Rio de Janeiro, São Paulo, Santa Catarina) (Almeida et al. 2014; Pachelle et al. 2015; Ferreira et al. 2021). Remarks. Previous records from the coast of São Paulo include Ubatuba, and São Sebastião (Almeida et al. 2014). It is found in association with sponges, including Mycale (Zygomycale) angulosa (Duchassaing & Michelotti, 1864); a specimen was extracted from a colony of the bryozoan Schizoporella errata (Waters, 1878) (Almeida et al. 2014). Sequences accession number (GenBank): CCDB 6712—16S (OM720039), COI (OM672404) (present study)., Published as part of Mantelatto, Fernando L. & Al, Et, 2022, Checklist of decapod crustaceans from the coast of the São Paulo state (Brazil) supported by integrative molecular and morphological data: V. Dendrobranchiata and Pleocyemata [Achelata, Astacidea, Axiidea, Caridea (Alpheoidea and Processoidea excluded), Gebiidea, Stenopodidea], pp. 1-74 in Zootaxa 5121 (1) on page 42, DOI: 10.11646/zootaxa.5121.1.1, http://zenodo.org/record/6399728, {"references":["Almeida, A. O., Anker, A. & Mantelatto, F. L. (2014) A new snapping species of the shrimp genus Typton Costa, 1844 (Decapoda: Palaemonidae) from the coast of Sao Paulo, southeastern Brazil. Zootaxa, 3835 (1), 110 - 120. https: // doi. org / 10.11646 / zootaxa. 3835.1.6","Pachelle, P. P. G., Anker, A. & Tavares, M. (2015) New and additional records of the sponge shrimp genus Typton Costa, 1844 (Decapoda: Palaemonidae) from the Brazilian coast. Papeis Avulsos de Zoologia, 55, 317 - 322. https: // doi. org / 10.1590 / 0031 - 1049.2015.55.22","Ferreira, L. A. A, Mendes, C. B. & Pachelle, P. P. G. (2021) Range extensions of three marine shrimps (Caridea: Alpheidae, Palaemonidae) on the Brazilian coast. Anais da Academia Brasileira de Ciencias, 93, e 20190634. https: // doi. org / 10.1590 / 0001 - 3765202120190634"]}

Cuapetes americanus (Kingsley, 1878) (Fig. 8A) Anchistia americana Kingsley, 1878: 96. Material examined. Brazil, São Paulo: 1 ♀, CCDB 5508, Ubatuba, Praia do Itaguá, colls. F. Mantelatto et al., 30.xi.2014; 1 ♀, CCDB 2358, Ubatuba, Saco do Codó, Enseada do Flamengo, colls. F. Mantelatto & E. Mossolin, 02.vi.2008; 2 ♀ ov, CCDB 5473, Ubatuba, Praia do Lamberto, coll. F. Carvalho, 09.iv.2013; 2 ♂, CCDB 6295, Ubatuba, Ilha Vitória, colls. A. Castilho et al., vii.2015; 1 ♂, 1 ♀ ov, CCDB 6293, Santos, Laje de Santos, colls. A. Castilho et al., vii.2015; 2 ♂, CCDB 6294, Santos, Laje de Santos, colls. A. Castilho et al., iii.2016. Distribution. Western Atlantic— Bermuda, USA (North Carolina, Florida), Mexico, Cuba, Jamaica, Puerto Rico, Virgin Islands, Trinidad and Tobago, Aruba, Panama, Colombia, Venezuela, and Brazil (Amapá, Pará, Maranhão, Piauí, Ceará, Rio Grande do Norte, Paraíba, Pernambuco, Alagoas, Bahia, São Paulo) (Holthuis 1951; Barba et al. 2005; Coelho et al. 2006; Almeida et al. 2007a; Vieira et al. 2012; De Grave & Anker 2017). Remarks. Previous records from the coast of São Paulo include Ubatuba, Vitória Island and Laje de Santos (Forneris 1969; Moraes et al. 2020a). Although Coelho & Ramos (1972) report the species from Pará to São Paulo, we have not found records of material examined for the states of Sergipe and Espírito Santo. There was also no record of material examined for Honduras, cited by Vieira et al. (2012). Sequences accession number (GenBank): CCDB 5508—16S (OM720037), COI (OM672402) (present study). Genus Leander Desmarest, 1849, Published as part of Mantelatto, Fernando L. & Al, Et, 2022, Checklist of decapod crustaceans from the coast of the São Paulo state (Brazil) supported by integrative molecular and morphological data: V. Dendrobranchiata and Pleocyemata [Achelata, Astacidea, Axiidea, Caridea (Alpheoidea and Processoidea excluded), Gebiidea, Stenopodidea], pp. 1-74 in Zootaxa 5121 (1) on page 35, DOI: 10.11646/zootaxa.5121.1.1, http://zenodo.org/record/6399728, {"references":["Kingsley, J. S. (1878) Notes on the North American Caridea in the Museum of the Peabody Academy of Science at Salem, Mass. Proceedings of the Academy of Natural Sciences of Philadelphia, 1878, 89 - 98.","Holthuis, L. B. (1951) A general revision of the Palaemonidae (Crustacea Decapoda Natantia) of the Americas. I. The subfamilies Euryrhynchinae and Pontoniinae. Occasional Papers of the Allan Hancock Foundation, 11, 1 - 332.","Barba, E., Raz-Guzman, A. & Sanchez, A. J. (2005) Distribution patterns of estuarine caridean shrimps in the southwestern Gulf of Mexico. Crustaceana, 78 (6), 709 - 726. https: // doi. org / 10.1163 / 156854005774353502","Coelho, P. A., Almeida, A. O., Souza, J. F., Bezerra, L. E. A. & Giraldes, B. W. (2006) Diversity and distribution of the marine and estuarine shrimps (Dendrobranchiata, Stenopodidea and Caridea) from North and Northeast Brazil. Zootaxa, 1221 (1), 41 - 62. https: // doi. org / 10.11646 / zootaxa. 1221.1.5","Almeida, A. O., Guerrazzi, M. C. & Coelho, P. A. (2007 a) Stomatopod and decapod crustaceans from Camamu Bay, state of Bahia, Brazil. Zootaxa, 1553, 1 - 45. https: // doi. org / 10.11646 / zootaxa. 1553.1.1","Vieira, R. R. R., Ferreira, R. S. & D'Incao, F. (2012) Pontoniinae (Crustacea: Decapoda: Caridea) from Brazil with taxonomic key. Zootaxa, 3149 (1), 1 - 38. https: // doi. org / 10.11646 / zootaxa. 3149.1.1","De Grave, S. & Anker, A. (2017). An annotated checklist of marine caridean and stenopodidean shrimps (Malacostraca: Decapoda) of the Caribbean coast of Panama. Nauplius, 25, e 2017015. https: // doi. org / 10.1590 / 2358 - 2936 e 2017015","Forneris, L. (1969) Fauna Bentonica da baia do Flamengo, Ubatuba. Aspectos ecologicos. Thesis Livre Docencia. Instituto de Biociencias, Universidade de Sao Paulo, Sao Paulo, 215 pp.","Moraes, I. R. R., Almeida, A. O., Cobo, V. J., Alves, D. F. R., Davanso, T. M. & Castilho, A. L. (2020 a) Biodiversity of caridean shrimps on rocky bottoms of two preserved islands on the southeastern Brazilian coast. Marine Biology Research, 16 (8 - 9), 616 - 631. https: // doi. org / 10.1080 / 17451000.2020.1864830","Coelho, P. A. & Ramos, M. (1972) A constituicao e a distribuicao da fauna de decapodos do litoral leste da America do Sul entre as latitudes 5 ° N e 39 ° S. Trabalhos Oceanograficos da Universidade Federal de Pernambuco, 13, 133 - 236. https: // doi. org / 10.5914 / tropocean. v 13 i 1.2555","Desmarest, E. (1849) Description d'un nouveau genre de Crustaces de la section des decapodes macroures, famille de Salicoques, tribu des Palemoniens, (genre Leander.). Annales de la Societe Entomologique de France, 2 (7), 87 - 94."]}

Macrobrachium acanthurus (Wiegman, 1836) (Fig. 8C) Palaemon acanthurus Wiegmann, 1836: 150. Material examined. Brazil, São Paulo: 2 ♀, CCDB 3468, Ubatuba, Rio Puruba, colls. F. Mantelatto et al., 06.xii.2011; 1 ♂, CCDB 2134, São Sebastião, Rio da Praia do Pinto, colls. F. Mantelatto et al., 12.vii.2006; 1 ♂, CCDB 384, Ilhabela (Ilha de São Sebastião), Cachoeira da Toca, colls. F. Mantelatto et al., 07.vii.2011; 6 ♂, CCDB 3748, Bertioga, Ribeirão dos Alhos, colls. I. Leone et al., 24.x.2011; 2 ♂, CCDB 3203, Iguape, Rio Mar Pequeno, ponte Iguape-Ilha Comprida, colls. F. Mantelatto et al., 18.iv.2011; 7 ♀, 26 j, CCDB 3206, Ilha Comprida, Rio Praia Boqueirão Norte, colls. F. Mantelatto et al., 18.iv.2011; 1 ♂, 1 ♀, 22 j, CCDB 3228, Ilha Comprida, Rio Praia Boqueirão Sul, colls. F. Mantelatto et al., 17.iv.2011; 9 ♂, 3 ♀, 11 j, CCDB 5021, Cananéia, Rio Cantagalo, colls. R. Costa et al., 21.v.2012; 2 ♂, 1 ♀, 25 j, CCDB 5888, Cananéia, Riacho estrada bairro São Paulo, colls. F. Mantelatto et al., 22.vii.2012; 1 ♂, CCDB 3644, Cananéia, Estrada Pariquera-Açu, tributary of Rio Baguaçu, colls. F. Carvalho et al., 10.xi.2011. Distribution. Western Atlantic— USA (North Carolina, South Carolina, Georgia, Florida, Mississipi, Louisiana, Texas), Mexico, Cuba, Haiti, Jamaica, Puerto Rico, St. Martin, U.S.Virgin Islands, Antigua and Barbuda, Guadeloupe, Dominica, Martinique, Trinidad and Tobago, Nicaragua, Costa Rica, Panama, Colombia, Venezuela, Suriname, and Brazil (Amapá, Pará, Maranhão, Piauí, Ceará, Rio Grande do Norte, Paraíba, Pernambuco, Alagoas, Sergipe, Bahia, Espírito Santo, Rio de Janeiro, São Paulo, Paraná, Santa Catarina, Rio Grande do Sul) (von Ihering 1897; Rathbun 1901; Luederwaldt 1929; Sawaya 1946; Holthuis 1952a, 1959; Hart 1961; Coelho 1963; Williams 1965; Mistakidis 1966; Chace & Hobbs 1969; Melo-Filho 1971; Chace 1972; Coelho & Ramos-Porto 1980; Rodriguez 1980; Abele & Kim 1986, 1989; Bond-Buckup & Buckup 1989, 1999; Coelho et al. 1990; Pereira De Barros & Braun 1997; Ramos-Porto & Coelho 1998; Bowles et al. 2000; Valencia & Campos 2007; Almeida et al. 2013; Pileggi et al. 2014; Pimentel et al. 2014; Poupin 2018). Remarks. Previous records from the coast of São Paulo include Ubatuba, São Sebastião, Ilhabela (Ilha de São Sebastião), Cubatão, Santos, Itanhaém, Peruíbe, Registro, Iguape, Ilha Comprida, and Pariquera-Açu (von Ihering 1897 as Palaemon acanthurus; Luederwaldt 1929; Sawaya 1946; Valenti et al. 1989; Rocha & Bueno 2004; Ferreira et al. 2010; Pileggi & Mantelatto 2010; Pileggi et al. 2014; Mossolin et al. 2016). Sequences accession number (GenBank): CCDB 2134—16S (GU929449), COI (GU929470) (Vergamini et al. 2011)., Published as part of Mantelatto, Fernando L. & Al, Et, 2022, Checklist of decapod crustaceans from the coast of the São Paulo state (Brazil) supported by integrative molecular and morphological data: V. Dendrobranchiata and Pleocyemata [Achelata, Astacidea, Axiidea, Caridea (Alpheoidea and Processoidea excluded), Gebiidea, Stenopodidea], pp. 1-74 in Zootaxa 5121 (1) on page 36, DOI: 10.11646/zootaxa.5121.1.1, http://zenodo.org/record/6399728, {"references":["Wiegmann, A. F. A. (1836) Beschreibung einiger neuen Crustaceen des Berliner Museums aus Mexico und Brasilien. Archiv Fur Naturgeschicthe, 2 (1), 145 - 151.","Ihering, H. von (1897) Os camaroes de agua doce do Brazil. Revista do Museu Paulista, 2, 421 - 432.","Rathbun, M. J. (1901) Investigations of the Aquatic Resources and Fisheries of Porto Rico by the United States Fish Commission Steamer Fish Hawk in 1899. The Brachyura and Macrura of Porto Rico. Bulletin of the United States Fish Commission, 20, 1 - 127. [for 1900, preprint dated 1901, published in 1902]","Luederwaldt, H. (1929) Resultados de uma excursao cientifica a Ilha de Sao Sebastiao no litoral do Estado de Sao Paulo em 1925. Revista do Museu Paulista, 16, 1 - 79.","Sawaya, M. P. (1946) Sobre alguns camaroes dagua doce do Brasil. Boletim da Faculdade de Filosofia Ciencias e Letras da Universidade de Sao Paulo, Zoologia, 11, 393 - 408. https: // doi. org / 10.11606 / issn. 2526 - 4877. bsffclzoologia. 1946.125307","Holthuis, L. B. (1952 a) A general revision of the Palaemonidae (Crustacea, Decapoda, Natantia) of the Americas. II. The Subfamily Palaemonidae. Occasional Papers of the Allan Hancock Foundation, 12, 1 - 396.","Holthuis, L. B. (1959) The Crustacea Decapoda of Suriname (Dutch Guiana). Zoologische Verhandelingen, 44, 1 - 296.","Hart, C. W. Jr. (1961) The freshwater shrimps (Atyidae and Palaemonidae) of Jamaica. W. I, with a discussion of their relation to the ancient geography of the Western Caribbean area. Proceedings of the Academy of Natural Sciences of Philadelphia, 113 (4), 61 - 80.","Coelho, P. A. (1963) Observacoes preliminares sobre a biologia e a pesca dos camaroes do genero Macrobrachium Bate, 1868 (Decapoda: Palaemonidae) no Estado de Pernambuco. Trabalhos Oceanograficos da Universidade Federal de Pernambuco, 3 (1), 75 - 81. https: // doi. org / 10.5914 / tropocean. v 3 i 1.2487","Williams, A. B. (1965) Marine decapod crustaceans of the Carolinas. Fisheries Bulletin, 65 (1), 1 - 298.","Chace F. A. Jr. & Hobbs H. H. Jr. (1969) The freshwater and terrestrial decapod crustaceans of the West-Indies with special reference to Dominica. Bulletin of the United States National Museum, 292, 1 - 258. https: // doi. org / 10.5479 / si. 03629236.292.1","Melo-Filho, N. R. (1971) Contribuicao ao estudo do camarao verdadeiro Macrobrachium acanthurus (Wiegmann, 1836) do Rio Grande do Norte. Boletim do Instituto de Biologia Marinha da Universidade Federal do Rio Grande do Norte, 5, 129 - 136.","Chace, F. A. Jr. (1972) The shrimps of the Smithsonian-Bredin Caribbean Expeditions with a summary of the West-Indian shal- low-water species (Crustacea: Decapoda: Natantia). Smithsonian Contributions to Zoology, 98, 1 - 179. https: // doi. org / 10.5479 / si. 00810282.98","Coelho, P. A. & Ramos-Porto, M. (1980) Crustaceos decapodos da costa do Maranhao, Brasil. Boletim do Instituto Oceanografico, 29 (2), 135 - 138. https: // doi. org / 10.1590 / S 0373 - 55241980000200028","Rodriguez, G. (1980) Los crustaceos decapodos de Venezuela. Caracas, Instituto Venezolano de Investigaciones Cientificas, 494 pp.","Abele, L. G. & Kim, W. (1986) An illustrated guide to the marine decapod crustaceans of Florida. Florida Department of Environmental Regulation, Technical Series, 8 (1 - 2), 1 - 760.","Abele, L. G. & Kim, W. (1989) The decapod crustaceans of the Panama Canal. Smithsonian Contributions to Zoology, 482, 1 - 50. https: // doi. org / 10.5479 / si. 00810282.482","Bond-Buckup, G. & Buckup, L. (1989) Os Palaemonidae de aguas continentais do Brasil meridional (Crustacea: Decapoda). Revista Brasileira de Biologia, 49 (4), 883 - 896.","Bond-Buckup, G. & Buckup, L. (1999) Caridea (pitus, camaroes de agua doce e marinhos). In: Buckup, L. & Bond-Buckup, G. (Eds.), Os crustaceos do Rio Grande do Sul. Ed. UFRGS, Porto Alegre, pp. 300 - 318.","Coelho, P. A., Ramos-Porto, M. & Melo, G. A. S. (1990) Crustaceos decapodos do estado de Alagoas. Anais da Sociedade Nordestina de Zoologia, 3, 21 - 34.","Pereira de Barros, M. & Braun, A. S. (1997) Contribuicao no estudo dos Atyidae e Palaemonidae (Crustacea: Decapoda) do leste brasileiro, 14 º 21 ' e 20 º 55 ' de latitude sul. Biotemas, 10 (1), 7 - 26.","Coelho, P. A. & Ramos-Porto, M. (1998) Malacostraca-Eucarida. Palinuridae. In: Young, P. S. (Ed.), Catalog of Crustacea from Brazil, Museu Nacional, Rio de Janeiro, 6, pp. 387 - 392","Bowles, D. E., Aziz, K. & Knight, C. L. (2000) Macrobrachium (Decapoda: Caridea: Palaemonidae) in the contiguous United States: a review of the species and an assessment of threats to their survival. Journal of Crustacean Biology, 20 (1), 158 - 171. https: // doi. org / 10.1163 / 20021975 - 99990025","Valencia, D. & Campos, M. R. (2007) Freshwater prawns of the genus Macrobrachium Bate, 1868 (Crustacea: Decapoda: Palaemonidae) of Colombia. Zootaxa, 1456 (1), 1 - 44. https: // doi. org / 10.11646 / zootaxa. 1456.1.1","Almeida, A. O., Costa-Souza, A. C., Cunha A., Santos, P. S., Oliveira, M. V. & Soledade G. O. (2013) Estuarine caridean shrimps (Crustacea: Decapoda) from Ilheus, Bahia, Brazil: Updated checklist and a key for their identification. Check List, 9 (6), 1396 - 1405. https: // doi. org / 10.15560 / 9.6.1396","Pileggi, L. G., Rossi, N., Wehrtmann, I. S. & Mantelatto, F. L. (2014) Molecular perspective on the American transisthmian species of Macrobrachium (Caridea, Palaemonidae). ZooKeys, 457, 79 - 108. https: // doi. org / 10.3897 / zookeys. 457.6818","Pimentel, F. R. & Magalhaes, C. (2014) Palaemonidae, Euryrhynchidae, and Sergestidae (Crustacea: Decapoda): records of native species from the states of Amapa and Para, Brazil, with maps of geographic distribution. Check List, 10 (6), 1300 - 1315. https: // doi. org / 10.15560 / 10.6.1300","Poupin, J. (2018) Les Crustaces decapodes des Petites Antilles: Avec de nouvelles observations pour Saint-Martin, la Guadeloupe et la Martinique. Museum national d'Histoire naturelle, Paris, 264 pp.","Valenti, W. C., Mello, J. T. C & Lobao, V. L. (1989) Fecundidade em Macrobrachium acanthurus (Wiegmann, 1836) do Rio Ribeira de Iguape (Crustacea, Decapoda, Palaemonidae). Revista Brasileira de Zoologia, 6 (1), 9 - 15. https: // doi. org / 10.1590 / S 0101 - 81751989000100002","Rocha, S. S. & Bueno, S. L. S. (2004) Crustaceos decapodes de agua doce com ocorrencia no Vale do Ribeira de Iguape e rios costeiros adjacentes, Sao Paulo, Brasil. Revista Brasileira de Zoologia, 21 (4), 1001 - 1010. https: // doi. org / 10.1590 / S 0101 - 81752004000400038","Ferreira, R. S., Vieira, R. R. R. & D'Incao, F. (2010) The marine and estuarine shrimps of the Palaemoninae (Crustacea: Decapoda: Caridea) from Brazil. Zootaxa, 2606 (1), 1 - 24. https: // doi. org / 10.11646 / zootaxa. 2606.1.1","Pileggi, L. G. & Mantelatto, F. L. (2010) Molecular phylogeny of the freshwater prawn genus Macrobrachium (Decapoda, Palaemonidae), with emphasis on the relationships among selected American species. Invertebrate Systematics, 24 (1), 194 - 208. https: // doi. org / 10.1071 / IS 09043","Mossolin, E. C., Pileggi, L. G. & Mantelatto, F. L. (2016) Crustacea, Decapoda, Palaemonidae, Macrobrachium Bate, 1868, Sao Sebastiao Island, state of Sao Paulo, southeastern Brazil. Check List, 6 (4), 605 - 613. https: // doi. org / 10.15560 / 6.4.605","Vergamini, F. G., Pileggi, L. A. & Mantelatto, F. L. (2011) Genetic variability of the Amazon River prawn Macrobrachium amazonicum (Decapoda, Caridea, Palaemonidae). Contributions to Zoology, 80, 67 - 83. https: // doi. org / 10.1163 / 18759866 - 08001003"]}

Typton distinctus Chace, 1972 Typton distinctus Chace, 1972: 49, figs. 13–14. (Fig. 8J) Material examined. Brazil, São Paulo: 1 ♀, CCDB 6707, Ubatuba, Itaguá, Porto de Itaguá, colls. R. Santos & I. Moraes, i.2019; 1 ♂, CCDB 6713, Cananéia, Ilha da Figueira, colls. R. Santos & I. Moraes, 27.xi.2020. Distribution. Western Atlantic— USA (Florida), Mexico (Yucatan Peninsula), Cuba, and Brazil (Pernambuco, Rio de Janeiro, São Paulo) (Chace 1972; Abele & Kim 1986; Camp et al. 1998; Coelho et al. 2006; Duris et al. 2009; Vieira et al. 2012; Pachelle et al. 2015; Moraes et al. 2020b). Remarks. Previous records from the coast of São Paulo include Ubatuba, in Pier do Porto in Itaguá (Moraes et al. 2020b). It is found in shallow waters associated with sponges (Chace 1972; Ramos-Porto & Coelho 1998; Vieira et al. 2012; Pachelle et al. 2015; Moraes et al. 2020b). In general, shrimps of the genus dwell deep in sponge canals (Duris et al. 2011; Anker et al. 2021). Probably due to these, its small size (carapace length: 1.53–2.71 mm) and the relationship among the shrimp’s color and the sponge host (Moraes et al. 2020b), it is hard to sample. There is available material from São Paulo coast in other collections such as MZUSP 40095 and 40096, and it is deposited in the Biological Collection from São Paulo State University—Zoology Department, Botucatu-SP (Moraes et al. 2020a). Sequences accession number (GenBank): CCDB 6713—16S (OM720040), COI (OM672405) (present study)., Published as part of Mantelatto, Fernando L. & Al, Et, 2022, Checklist of decapod crustaceans from the coast of the São Paulo state (Brazil) supported by integrative molecular and morphological data: V. Dendrobranchiata and Pleocyemata [Achelata, Astacidea, Axiidea, Caridea (Alpheoidea and Processoidea excluded), Gebiidea, Stenopodidea], pp. 1-74 in Zootaxa 5121 (1) on pages 40-41, DOI: 10.11646/zootaxa.5121.1.1, http://zenodo.org/record/6399728, {"references":["Chace, F. A. Jr. (1972) The shrimps of the Smithsonian-Bredin Caribbean Expeditions with a summary of the West-Indian shal- low-water species (Crustacea: Decapoda: Natantia). Smithsonian Contributions to Zoology, 98, 1 - 179. https: // doi. org / 10.5479 / si. 00810282.98","Abele, L. G. & Kim, W. (1986) An illustrated guide to the marine decapod crustaceans of Florida. Florida Department of Environmental Regulation, Technical Series, 8 (1 - 2), 1 - 760.","Camp, D. K., Lyons, W. G. & Perkins, T. H. (1998) Checklists of selected shallow-water marine invertebrates of Florida. Technical Report. Florida Marine Research Institute, St. Petersburg, Florida, 238 pp.","Coelho, P. A., Almeida, A. O., Souza, J. F., Bezerra, L. E. A. & Giraldes, B. W. (2006) Diversity and distribution of the marine and estuarine shrimps (Dendrobranchiata, Stenopodidea and Caridea) from North and Northeast Brazil. Zootaxa, 1221 (1), 41 - 62. https: // doi. org / 10.11646 / zootaxa. 1221.1.5","Duris, D. L., Alvarez, F., Goy, J. W. & Lemaitre, R. (2009) Decapoda (Crustacea) of the Gulf of Mexico, with comments on the Amphionidacea. In: Felder, D. L. & Camp, D. K. (Eds.). Gulf of Mexico. Origin, waters, and biota, 1, Biodiversity. TX, Texas A & M University Press. pp. 1019 - 1104","Vieira, R. R. R., Ferreira, R. S. & D'Incao, F. (2012) Pontoniinae (Crustacea: Decapoda: Caridea) from Brazil with taxonomic key. Zootaxa, 3149 (1), 1 - 38. https: // doi. org / 10.11646 / zootaxa. 3149.1.1","Pachelle, P. P. G., Anker, A. & Tavares, M. (2015) New and additional records of the sponge shrimp genus Typton Costa, 1844 (Decapoda: Palaemonidae) from the Brazilian coast. Papeis Avulsos de Zoologia, 55, 317 - 322. https: // doi. org / 10.1590 / 0031 - 1049.2015.55.22","Moraes, I. R. R., Bergamasco, G. R., Santos, R. C., Antunes, M., Soledade, G. O., Costa, R. C. & Castilho, A. L. (2020 b) New record of the sponge-dwelling shrimp Typton distinctus Chace, 1972 (Decapoda: Caridea: Palaemonidae) in Sao Paulo State, Brazil. Zootaxa, 4763 (3), 444 - 446. https: // doi. org / 10.11646 / zootaxa. 4763.3.10","Coelho, P. A. & Ramos-Porto, M. (1998) Malacostraca-Eucarida. Palinuridae. In: Young, P. S. (Ed.), Catalog of Crustacea from Brazil, Museu Nacional, Rio de Janeiro, 6, pp. 387 - 392","Duris, Z., Horka, I., Juracka, P. J., Petrusek, A. & Sandford, F. (2011) These squatters are not innocent: the evidence of parasitism in sponge-inhabiting shrimps. PLoS ONE, 6, e 21987. https: // doi. org / 10.1371 / journal. pone. 0021987","Anker, A., Pachelle, P. P. & Leray, M. (2021) Two new species of Typton Costa, 1844 from tropical American waters, with taxonomic notes on T. tortugae McClendon, 1911 and a new record of T. granulosus Ayon-Parente, Hendrickx & Galvan- Villa, 2015 (Decapoda: Caridea: Palaemonidae). Zootaxa, 4950 (2), 267 - 295. https: // doi. org / 10.11646 / zootaxa. 4950.2.3","Moraes, I. R. R., Almeida, A. O., Cobo, V. J., Alves, D. F. R., Davanso, T. M. & Castilho, A. L. (2020 a) Biodiversity of caridean shrimps on rocky bottoms of two preserved islands on the southeastern Brazilian coast. Marine Biology Research, 16 (8 - 9), 616 - 631. https: // doi. org / 10.1080 / 17451000.2020.1864830"]}

Mantelatto, Fernando L., Al, Et (2022): Checklist of decapod crustaceans from the coast of the São Paulo state (Brazil) supported by integrative molecular and morphological data: V. Dendrobranchiata and Pleocyemata [Achelata, Astacidea, Axiidea, Caridea (Alpheoidea and Processoidea excluded), Gebiidea, Stenopodidea]. Zootaxa 5121 (1): 1-74, DOI: https://doi.org/10.11646/zootaxa.5121.1.1, URL: http://dx.doi.org/10.11646/zootaxa.5121.1.1

Periclimenes paivai Chace, 1969 Periclimenes paivai Chace, 1969: 259, figs. 5–7. Material examined. Brazil, São Paulo: 3 ♂, 6 ♀ (5 ♀ ov), CCDB 367, Cananéia, coll. A. Morandini, iv.1990; 1 ♀ ov, CCDB 3288, Cananéia, estuary, colls. R. Costa et al., 17.iv.2011; 2 ni, CCDB 3292, Cananéia, Ilha do Cardoso, colls. R. Costa & A. Castilho., 18.iv.2011; 1 ♀ ov, CCDB 3839, Cananéia, colls. R. Costa et al., 09.xi.2011; 1 ♀, CCDB 4592, Cananéia, coll. J. Pantaleão, 29.viii.2011; 1 ♀, CCDB 6196, Cananéia, coll. R. Costa, 20.v.2012. Distribution. Brazil (Paraíba, Rio de Janeiro, São Paulo, Santa Catarina) (Chace 1969; Ramos-Porto & Coelho 1998; Pantaleão et al. 2016; Baeza et al. 2017). Remarks. Previous records from the coast of São Paulo include Ubatuba, São Sebastião, Santos, and Cananéia (Chace 1969; Martinelli et al. 2008). Sequences accession number (GenBank): CCDB 3292—16S (MF490226) (Mantelatto et al. 2018) Genus Typton Costa, 1844, Published as part of Mantelatto, Fernando L. & Al, Et, 2022, Checklist of decapod crustaceans from the coast of the São Paulo state (Brazil) supported by integrative molecular and morphological data: V. Dendrobranchiata and Pleocyemata [Achelata, Astacidea, Axiidea, Caridea (Alpheoidea and Processoidea excluded), Gebiidea, Stenopodidea], pp. 1-74 in Zootaxa 5121 (1) on page 40, DOI: 10.11646/zootaxa.5121.1.1, http://zenodo.org/record/6399728, {"references":["Coelho, P. A. & Ramos-Porto, M. (1998) Malacostraca-Eucarida. Palinuridae. In: Young, P. S. (Ed.), Catalog of Crustacea from Brazil, Museu Nacional, Rio de Janeiro, 6, pp. 387 - 392","Pantaleao, J. A. F., Carvalho-Batista, A., Fransozo, A. & Costa, R. C. (2016) The influence of upwelling on the diversity and distribution of marine shrimp (Penaeoidea and Caridea) in two tropical coastal areas of southeastern Brazil. Hydrobiologia, 763, 381 - 395. https: // doi. org / 10.1007 / s 10750 - 015 - 2429 - 4","Baeza, J. A., Barros-Alves, S., Lucena, R. A., Lima, S. F. B. & Alves, D. F. R. (2017) Host-use pattern of the shrimp Periclimenes paivai on the scyphozoan jellyfish Lychnorhiza lucerna: probing for territoriality and inferring its mating system. Helgoland Marine Research, 71, 17. https: // doi. org / 10.1186 / s 10152 - 017 - 0497 - 8","Martinelli, J. E., Stampar, S. N., Morandini, A. C. & Mossolin, E. C. (2008) Cleaner shrimp (Caridea: Palaemonidae) associated with scyphozoan jellyfish. Vie et Milieu - Life and Environment, 58 (2), 133 - 140.","Mantelatto, F. L., Terossi, M., Negri, M., Buranelli, R. C., Robles, R., Magalhaes, T., Tamburus, A. F., Rossi, N. & Miyazaki, M. J. (2018) DNA sequence database as a tool to identify decapod crustaceans on the Sao Paulo coastline. Mitochondrial DNA Part A: DNA Mapping, Sequencing and Analysis, 29 (5), 805 - 815. https: // doi. org / 10.1080 / 24701394.2017.1365848","Costa, O. G. (1844) Su due nuovi generi di Crostacei decapodi macrouri. Annali delle Accademia degli Aspiranti Naturalisti, 2, 285 - 292."]}

Periclimenaeus rastrifer Bruce, 1980 (Figs 1���7), Published as part of ��uri��, Zden��k, ��ob����ov��, Anna & Lin, Chia-Wei, 2021, Redescription and new record of the spongobiotic shrimp Periclimenaeus rastrifer Bruce, 1980 (Crustacea: Decapoda: Palaemonidae) from Taiwan, pp. 566-578 in Zootaxa 5081 (4) on page 567, DOI: 10.11646/zootaxa.5081.4.7, http://zenodo.org/record/5778905, {"references":["Bruce, A. J. (1980) On some Pontoniine Shrimps from Noumea, New Caledonia. Cahiers de l'Indo - Paficique, 2, 1 - 39."]}

Odontonia kerangcaris sp. nov. (Figs. 1���8) urn:lsid:zoobank.org:act: 197FDE7A-BDDD-4162-8412-FEC59D128460 Material examined. Holotype male, pocl. 2.1mm, MZB 5341, stn BER.39, Indonesia, NE Kalimantan, Berau Islands, Baliktaba reef, SW-side (N of Panjang Isl.), 02˚34���43.3���N 118˚00���48.2���E, 24.x.2003, depth 33m, SCUBA diving, in Chama lazarus Linnaeus, 1758, collected by C.H.J.M. Fransen. Diagnosis. Rostrum short, not overreaching antennular peduncle, without ventral tooth. Pterygostomial angle broadly rounded, slightly produced. Basal segment of antennular peduncle with strong, acute medioventral tooth, with distolateral tooth reaching distal margin of intermediate segment. Carpocerite just falling short of distal margin of lamina of scaphocerite; distolateral tooth of scaphocerite robust, 0.15 times length of lamina (incl. distolateral tooth), almost twice as long as distal lamina; incision between distolateral tooth and lamina rather deep. Dactylus of ambulatory pereiopods with acute distoventral accessory tooth, perpendicular to flexor margin; ventral margin of corpus with one rounded protuberance at 2/3rd and one rounded protuberance proximally, without denticles in between; unguis strongly curved, 0.5 times corpus length, with large scales distally on outer margin, gradually decreasing in size proximally. Telson with two pairs of submarginal dorsal spines at 0.3 and 0.7 of telson length; distal and proximal pair of spines of equal length, 0.14 times telson length. Description. Body (Fig. 1) subcylindrical, somewhat depressed. Carapace (Fig. 1) glabrous with a few scattered simple setae. Rostrum (Fig. 2A, B) well developed, without dorsal teeth, reaching half of distal segment of antennular peduncle, with broad, indistinct, shallow dorsal elevation over entire length and acute lateral carinae, with slightly concave ventral carina in distal part; distal end rounded in lateral view, without subdistal ventral tooth, with few distal setae, blunt in dorsal view, broadened at base. Inferior orbital angle (Fig. 2B) produced, directed inward. Antennal spine (Fig. 2B) blunt, protruding rounded process, not separated by notch from inferior orbital angle. Anterolateral margin straight, pterygostomial angle slightly produced, rounded. Abdomen (Fig. 1) smooth; sixth segment 1.3 times longer than fifth, 1.3 times broader than long, posteroventral angle rounded, posterolateral angle feebly produced, blunt; pleura of first five segments broadly rounded. Telson (Fig. 2C, D) almost twice as long as sixth abdominal segment, about twice as long as proximal width; lateral margins slightly convex, almost straight, convergent posteriorly; posterior border without median process; two pairs of submarginal dorsal spines at 0.3 and 0.7 of telson length; distal and proximal pair of spines of equal length, 0.14 times telson length; posterior margin (Fig. 2E) with three pairs of spines, lateral spines small, marginal, about 1/3 of length of intermediate spines; submedian spines slightly shorter than intermediate spines; both intermediate and submedian spines about as long as dorsal spines, but more slender. Eyestalk (Fig. 2A, B) short, about as long as broad, broader than diameter of hemispherical cornea. Antennula (Fig. 3A, B) with peduncle and flagella short. Basal segment 1.4 times as long as proximal width, with acute produced distolateral tooth reaching distal margin of intermediate segment, anterior margin oblique; ventromedial tooth large, acute, at midlength of basal segment, submarginal; stylocerite short, reaching halfway basal segment, tip acute, distolateral margin with 4 short plumose setae; statocyst with statolith present in proximal part. Intermediate segment short, slightly broader than long; distal segment broader than long. Upper flagellum short, biramous, with 3 segments fused; short free ramus one-segmented; longer free ramus 3-segmented. Lower flagellum with 5 segments. Antenna (Fig. 3C) with basicerite short, laterally unarmed, with large rounded antennal gland tubercle medially; ischiocerite and merocerite normal; carpocerite just falling short of distal margin of lamina of scaphocerite, slender, 3.7 times longer than distal width; flagellum about as long as post-orbital carapace length; scaphocerite with lamina twice as long as wide, anterior margin rounded, lateral margin broadly convex; distolateral tooth robust, 0.15 times length of lamina (incl. distolateral tooth), almost twice as long as distal lamina length, somewhat curved inward; incision between distolateral tooth and lamina rather deep. Epistome with blunt anterior median carina; labrum normal, oval. Paragnaths well developed, alae with broad transverse more or less rectangular distal lobes, and small rounded more or less triangular ventromesial lobes; corpus very short, with shallow median excavation, bordered laterally by non-setose, oblique, carinae. Second thoracic sternite with shallow indistinct rounded median elevation, without setae. Third thoracic sternite unarmed. Fourth thoracic sternite with low, medially notched, triangular plate formed by the fused lateral carinae. Fifth thoracic sternite with well-developed lateral plates with shallow central slit posteromedial to second pereiopod coxae; coxae almost against each other. Sixth to eighth thoracic sternites unarmed, broadening posteriorly. Mandible (Fig. 3D) with incisor process with 5 acute distal teeth, small denticles along medioventral margin absent; molar process robust with several blunt teeth, some fringed with setal brushes. Maxillula (Fig. 3E) with upper and lower lacinia rather small; distal lacinia rectangular with two rows of about 8 stout distal spines, almost devoid of setae; lower lacinia slender, triangular, with few short serrulate setae in distal part; palp feebly bilobed, large lobe with small ventral tubercle with single short recurved seta. Maxilla (Fig. 3F) with basal endite well developed, with distal lobe and proximal lobe distinct, each with one long, simple distal seta; coxal endite obsolete, medial margin convex, non-setose; scaphognathite of moderate size; palp simple, longer than basal endite, blunt distally, non-setose. First maxilliped (Fig. 3G) with coxal and basal endite partly fused, broad; basal endite fringed with scattered, rather short simple and finely serrulate setae along medial and distal margins; coxal endite convex, indistinctly separated from basal endite, with few simple setae medially; exopod well developed, flagellum with 4 long plumose setae distally; caridean lobe rather small, narrow; epipod bilobed; palp simple, rather short, non-setose. Second maxilliped (Fig. 4A) with endopod short, stout; dactylar segment 3.0 times broader than long, fringed with short, coarsely serrulate, spiniform, and longer curled, finely serrulate setae medially; propodal segment with row of robust spines and few simple setae along expanded distomedial margin; one seta in distal part of ventrolateral margin; carpal segment short, broader than long, unarmed; meral segment without setae; ischial and basal segment completely fused, medially somewhat excavate, without setae, basal part strongly convex medially; exopod long, with 4 long plumose setae distally; coxal segment medially slightly produced, with few short simple setae, with expanded epipod laterally. Third maxilliped (Fig. 4B) short; with ischiomerus partly fused to basis, not broadened, 2.3 times as long as broad, not tapered distally, somewhat flattened, with row of long simple setae along medial margin, lateral margin with few simple setae; basal segment medially convex with few long simple setae on medial margin; exopod well developed, reaching distal margin of ischiomerus, with 4 long plumose setae in distal part; coxal segment without medial process, with large lateral plate with one short simple seta laterally; without arthrobranch; ultimate and penultimate segments of equal length; penultimate segment as long as broad, somewhat flattened, with few long finely serrulate setae ventromedially; ultimate segment more slender, with groups of long coarsely serrulate setae ventromedially and distally. First pereiopod (Fig. 4C) stout, exceeding carpocerite with chela and half of carpus; chela 3.0 times longer than deep, slightly compressed; fingers as long as palm, cutting edges entire, with groups of serrulate setae, tips slightly hooked; cleaning organ absent; carpus 0.8 times length of chela, 2.4 times longer than distal width, tapering proximally, unarmed; merus as long as chela, 3.3 times longer than central width, somewhat curved, with few setae medially; ischium 0.5 times merus length, slightly expanded medially, with few setae medially; basis as long as ischium, with few setae medially; coxa with small ventral lobe with few short simple setae. Second pereiopods (Fig. 5A, B) subequal, similar. Major right chela (Fig. 5C) with palm slightly compressed, without carinae, with few scattered simple setae; fingers with simple setae; dactylus 0.6 of palm length, 3.2 times longer than deep, with one large triangular tooth at 1/3 of cutting edge, distal part of cutting edge entire, straight, tip strongly hooked; fixed finger 2.1 times as long as deep, with broad flattened tooth with row of small denticles in proximal part, separated by shallow notch from triangular acute tooth at midpoint of cutting edge, distal part of cutting edge entire, straight, tip strongly hooked; carpus 0.55 of palm length, 1.5 times longer than distal width, strongly tapering proximally; merus as long as carpus, 1.8 times longer than central width, distomedially excavate; ischium as long as merus, somewhat tapering proximally, with slightly protruded distomedial angle; basis and coxa without special features. Minor cheliped (Fig. 5B) similar, dactylus slightly longer in relation to palm than in major chela. Ambulatory pereiopods (Figs. 6, 7) short, stout. Dactylus of third pereiopod (Fig. 6A, B) with corpus moderately compressed, about 1.2 times longer than proximal width, with single row of few simple setae along ventral margin and in distal part, distoventral accessory tooth acute, perpendicular to flexor margin, ventral margin with one rounded protuberance at 2/3rd of ventral margin and one rounded protuberance proximally, without denticles in between; unguis strongly curved, about 0.5 of corpus length, distally with large dorsal scales, gradually decreasing in size proximally; propodus 2.8 times dactylus length, 4.7 times longer than proximal width, with one short, blunt, spine in distal part of flexor margin, with few long slender simple setae; carpus 0.64 of propodus length, 2.25 times longer than distal width, slightly tapering proximally, with indistinct distal lobe, unarmed; merus about as long as propodus, slightly swollen, about 2.8 times longer than central width, cylindrical; ischium 0.66 of merus length, 2.2 times longer than distal width; basis and coxa without special features. Fourth and fifth (Fig. 7A, B) pereiopods similar. Male first pleopod (Fig. 8A) with endopod 0.4 times as long as exopod, with 2 long distal setae, with row of 5 small simple setae on lateral margin. Male second pleopod (Fig. 8B, C) with endopod slightly shorter than exopod, with appendix masculina, equal to about half length of appendix interna, reaching halfway endopod, with 3 very long setulose setae distally. Uropods (Figs. 2D, 8D) normal, with short unarmed protopodite; exopod broad, 2.0 times longer than central width, lateral margin strongly convex, without distolateral tooth, with minute spinule distolaterally; endopod slightly exceeding exopod, reaching posterior margin of telson, 2.4 times longer than wide. Size. This is a small sized species, pocl. is 2.1 mm. Coloration. Not known. Host. Mollusca, Bivalvia, Chamidae, Chama lazarus Linnaeus, 1758. Distribution. Only known from the type locality: Berau Island, NE Kalimantan, Indonesia. Etymology. From the Indonesian word ���kerang���, which translates to ���bivalve���, combined with the Latin ��� caris ��� referring to shrimp. Remarks. The species falls within the genus definition for Odontonia provided by Fransen (2002) and modified by De Gier & Fransen (2018). The new species has the accessory tooth on the dactyli of the ambulatory pereiopods similar to the ones found in O. rufopunctata, O. bagginsi, O. sibogae, O. compacta, and O. katoi. It differs from these species in the absence of a forward directed proximal tooth on the flexor margin of the corpus of the ambulatory dactyli. It also lacks the small denticles posterior to the distoventral accessory tooth on the dactylar corpus. Species of Odontonia are known as endosymbionts of solitary ascidians (De Gier & Fransen 2018). Odontonia kerangcaris sp. nov. is the first species within the genus recorded from a bivalve mollusk. The species has affinities with species of the closely related bivalve mollusk dwelling genus Conchodytes Peters, 1852 (Hork�� et al. 2016; Chow et al. 2021). The accessory tooth and protuberances on the flexor margin of the ambulatory pereiopods resemble almost all Conchodytes species except for C. chadi (Marin, 2011) and C. monodactylus (Holthuis, 1952). Other palaemonid endosymbionts known from chamid bivalves are Pontonia pilosa Fransen, 2002 and Bruceonia ardeae (Bruce, 1981). The East Atlantic P. pilosa has been recorded as an endosymbiont of Pseudochama cristella (Lamarck, 1819). B. ardeae has been recorded from the Great Barrier Reef, Australia, as an endosymbiont of Chama pacifica Broderip, 1835. Both P. pilosa and B. ardeae have the furry appearance shared with another palaemonid endosymbiont of bivalves: Pinnotherotonia rumphiusi Marin & Paulay, 2010, hosted by the venerid bivalve Periglypta crispata (Deshayes, 1854). A dense setal coverage has also been noted for several pinnotherine crabs infesting bivalves (De Gier & Becker 2020). The phylogenetic position of the new species seems to be at the base of the Odontonia clade and as sister of the Conchodytes clade (De Gier, Groenhof & Fransen, in prep.), revealing intrageneric host switching., Published as part of Fransen, Charles H. J. M., Groenhof, Mike & Gier, Werner De, 2021, Odontonia kerangcaris sp. nov., a new bivalve-associated shrimp (Crustacea, Decapoda, Palaemonidae) from East Kalimantan, revealing intrageneric host switching, pp. 275-285 in Zootaxa 5081 (2) on pages 276-283, DOI: 10.11646/zootaxa.5081.2.6, http://zenodo.org/record/5771777, {"references":["Fransen, C. H. J. M. (2002) Taxonomy, phylogeny, historical biogeography, and historical ecology of the genus Pontonia Latreille (Crustacea: Decapoda: Caridea: Palaemonidae). Zoologische Verhandelingen, 336, 1 - 433.","Gier, W. de & Fransen, C. H. J. M. (2018) Odontonia plurellicola sp. n. and Odontonia bagginsi sp. n., two new ascidian-associated shrimp from Ternate and Tidore, Indonesia, with a phylogenetic reconstruction of the genus (Crustacea, Decapoda, Palaemonidae). ZooKeys, 765, 123 - 160. https: // doi. org / 10.3897 / zookeys. 765.25277","Peters, W. (1852) Conchodytes, eine neue in Muscheln lebende Gattung von Garneelen. Bericht uber die zur Bekanntmachung geeigneten Verhandlungen der Koniglich Preussischen Akademie der Wissenschaften zu Berlin, 1852, 588 - 595.","Horka, I., De Grave, S., Fransen, C. H. J. M., Petrusek, A. & Duris, Z. (2016) Multiple host switching events shape the evolution of symbiotic palaemonid shrimps (Crustacea: Decapoda). Scientific Reports, 6, 26486. https: // doi. org / 10.1038 / srep 26486","Chow, L. H., De Grave, S. & Tsang, L. M. (2021) Evolution of protective symbiosis in palaemonid shrimps (Decapoda: Caridea) with emphases on host spectrum and morphological adaptations. Molecular Phylogenetics and Evolution, 162, 107201. https: // doi. org / 10.1016 / j. ympev. 2021.107201","Marin, I. (2011) Lacertopontonia chadi gen. et sp. nov., a new oyster-associated Pontonia - like pontoniine shrimp (Crustacea, Decapoda, Palaemonidae) from the Great Barrier Reef of Australia. Zootaxa, 2968 (1), 57 - 68. https: // doi. org / 10.11646 / zootaxa. 2968.1.4","Holthuis, L. B. (1952) The Decapoda of the Siboga Expedition. Part XI. The Palaemonidae collected by the Siboga and Snellius Expeditions with remarks on other species II. Subfamily Pontoniinae. Siboga Expeditie, 39 a 10, 1 - 253.","Bruce, A. J. (1981) Notes on some Indo-Pacific Pontoniinae, XXXVI. Pontonia ardeae sp. nov., a new bivalve associate from the Capricorn Islands (Decapoda, Natantia). Crustaceana, 40 (2), 113 - 126. https: // doi. org / 10.1163 / 156854081 X 00516","Marin, I. & Paulay, G. (2010) Pinnotherotonia rumphiusi gen. et sp. nov., a new furry bivalve-associated pontoniine shrimp (Crustacea: Decapoda: Palaemonidae) from Palau. Zootaxa, 2636 (1), 37 - 48. https: // doi. org / 10.11646 / zootaxa. 2636.1.3","Gier, W. de & Becker, C. (2020) A review of the ecomorphology of pinnotherine pea crabs (Brachyura: Pinnotheridae), with an updated list of symbiont-host associations. Diversity, 12 (11), 431. https: // doi. org / 10.3390 / d 12110431"]}

New records of 14 stygobiont crustacean species pertaining to six Malacostraca orders from 32 cenotes are presented, with their associated caves of the state of Yucatan, Mexico, together with an individual account for each species. Species composition of most of the investigated cenotes is examined for the first time. A thermosbaenacean and two amphipod species were not formally recorded to the cenote ecosystems of the state of Yucatan prior to our research. Distribution data of a cirolanid isopod previously known only from its type locality is also provided. Barcodes of mitochondrial cytochrome c oxidase subunit I for the reported peracarid species previously lacking this information have been included in present study as tools for species identification and a baseline of further molecular genetic analyses.