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The family Pachynomidae is recorded from Borneo as well as Southeast Asia for the first time. Camarochiloides gen. n. and its type species C. weiweii sp. n. is described. Dorsal habitus and various morphological characters of the new species are illustrated. Subfamily placement and affinities of the new genus are briefly discussed, a key to the genera of Pachynominae is provided. Body and wing polymorphism and nymphal morphology of the new species are documented.

Aphelonotus xenos species-group (here proposed) Diagnosis (after Schuh et al. 2015). Body of moderate size (body length from anterior margin of pronotal collar to apex of membrane 2.75–3.46 mm); head moderately elongate; eyes globular (Fig. 4); endocorium shortened (rendering medial fracture very short); corium smooth (Fig. 5); membrane without cells (Figs 1, 3); ventral surface of protibia flattened, provided with an anterior row of stout and moderately elongate spines (Fig. 6); paramere slender and sinuous (Figs 7–9), oriented subparallelly in rest (Fig. 7). Species included. Aphelonotus taino Schuh, Weirauch & Grillo, 2015 (Cuba), A. xenos Schuh, Weirauch & Grillo, 2015 (Costa Rica), and A. schuhi sp. nov. (Puerto Rico).

Aphelonotus schuhi sp. nov. (Figs 1���9) Type material. Holotype: ♂ (macropterous), ��� PUERTO RICO: Naguabo / El Yunque Nat. Forest, S part / La Sabana recr. area 5.6km N of / R��o Blanco at rd.PR191, 18��16.1���N, / 65��47.6���W, 510 m, 21.vi.-2.vii.2016; / Deler, Fik��ček & Seidel lgt. PR03 ��� [printed] // ��� flight intercept trap in / a sparse rainforest at the river / bank��� [printed] // ��� ♂ ��� [printed] // ��� APHELONOTUS / SCHUHI / sp. nov. / det. KMENT & R��DEI 2018 ��� [printed, red label] (coll. National Museum, Praha, Czech Republic). The holotype is mounted on card, the detached pygophore and left paramere are placed in a plastic microvial with glycerol, attached to the same pin. Description. Colour (Figs 1���2). Head (except apex), pedicellites, thorax and hemelytra dark brown; mandibular plates, clypeus, rostrum, scape, legs and abdomen of paler shades of brown; basi- and distiflagella whitish; spines of ventral surface of protibia black. Structure. Morphological characters as in generic description provided by Schuh et al. (2015). Exoskeleton highly similar to that of A. taino Schuh, Weirauch & Grillo, 2015 (Cuba) and A. xenos Schuh, Weirauch & Grillo, 2015 (Costa Rica) (see Diagnosis of A. xenos species-group above); only the characters diagnostic for the new species are listed here: Only macropterous morph known (Figs 1, 3). Protibia with two long and stout subapical spines, one shorter and blunt (Fig. 6: sas), second longer and tapering. Parameres bisinuous in dorsal view (Figs 7, 9), shaft (Figs 7���9: s) bent, outer face with prominent protuberance between shaft and blade (Fig. 8: p), blade with prominent inner angle (Fig. 8: ia) subproximally, without subapical tooth (Figs 7���9), apex laterally flattened (Figs 8, 9), widely rounded in anterior view (Fig. 8); blades of parameres divergent in rest, apices not crossing each other (Fig. 7). Measurements. Total body length (from apex of clypeus to apex of membrane, in mm)���3.31; body length from the pronotal collar to the apex of the membrane���2.75; head: width across eyes���0.48, interocular distance���0.30, ocellus diameter���0.04, interocellar distance���0.14, width across neck (behind compound eyes)���0.34; antenna: length of basipedicellite (= proximal secondary segment of pedicel)���0.46; pronotum: length (from anterior margin of pronotal collar to posterior margin of pronotum along midline)���0.55, width (between humeral angles)���1.03. Differential diagnosis. Aphelonotus schuhi sp. nov. is morphologically highly similar to A. taino and A. xenos. The new species shares the presence of the long and stout, apically blunt subapical spine on protibia (Fig. 6: sas) with A. xenos (see Schuh et al. 2015: figs 3, 19B), while this spine is missing in A. taino. As in other species of Aphelonotus (cf. Schuh et al. 2015), the identification of these three species is heavily based on the highly characteristic shape of their parameres: in A. schuhi the parameres articulated on the genital capsule in resting position are bisinuate in dorsal view (Figs 7, 9) (simply arcuate in both A. taino and A. xenos, cf. Schuh et al. 2015: fig. 3), its blade lacks preapical tooth (Fig. 8) (shared with A. taino; A. xenos has a preapical tooth on blade, cf. Schuh et al. 2015: fig. 4), and the apex of the paramere is laterally flattened (Figs 8, 9) and widely rounded in anterior view (Fig. 8) (pointed in both A. taino and A. xenos, cf. Schuh et al. 2015: fig. 4). The length of the holotype of A. schuhi sp. nov., measuring from the anterior margin of the pronotal collar to the apex of the membrane, is 2.75 mm, smaller than the known specimens of A. taino (2.93���3.24 mm) or A. xenos (3.15���3.46 mm) (cf. Schuh et al. 2015). Etymology. The new species is dedicated to Randall T. Schuh (American Museum of Natural History), the guru of contemporary heteropteran systematics and the first author of the excellent monograph of the genus Aphelonotus (Schuh et al. 2015). Habitat. The holotype was collected using a flight interception trap in a sparse rainforest at the river bank (M. Fik��ček, pers. comm.) (see Fig. 10). Distribution. Puerto Rico (this paper)., Published as part of Kment, Petr & R��dei, D��vid, 2020, Aphelonotus schuhi sp. nov., the first species of the family Pachynomidae from Puerto Rico (Hemiptera: Heteroptera), pp. 382-388 in Zootaxa 4748 (2) on pages 383-384, DOI: 10.11646/zootaxa.4748.2.10, http://zenodo.org/record/3698731, {"references":["Schuh, R. T., Weirauch, C. & Grillo, H. (2015) Revision of Aphelonotus Uhler (Hemiptera: Heteroptera: Pachynomidae), with description of six new species and documentation of nymphal morphology for three species. American Museum Novitates, 3829, 1 - 43. https: // doi. org / 10.1206 / 3829.1"]}

Aphelonotus schuhi sp. nov. (Hemiptera: Heteroptera: Pachynomidae: Aphelonotinae) is described from Puerto Rico based on a single male collected by flight interception trap. The new species is morphologically similar to A. taino Schuh, Weirauch & Grillo, 2015 and A. xenos Schuh, Weirauch & Grillo, 2015, being distinguished from them by the combination of the presence of a stout subapical spine on the protibia and the characteristic shape of the parameres. An informal A. xenos species-group is proposed to accommodate these three species.

Aphelonotus Uhler is revised with the recognition of 14 species, six of them described as new: A, alvarengai, A. elongatus, A. minutus, A. paramedius, A. taino, and A. xenos. Aphelonotus brevirostris Carayon and Villiers is treated as a junior synonym of A. fraterculus Harris. Color habitus images and illustrations of the male parameres are provided for all species; morphology for the adult female of A. major is documented through the use of scanning electron microscopy (SEM). Measurements of male and female specimens are presented and analyzed, documenting a strong correlation between total length and the length of the proximal portion of the antennal pedicel and the consequent utility of either of these measurements in species discrimination. Nymphs are described for the first time for the genus, for the species A. fraterculus, A. major, and A. xenos; their morphology is documented by SEM and color images. Distributional maps show a pattern of occurrence restricted primarily to the New World tr...

The recent catalog of Neotropical Nabidae is corrected and updated. Synonymies, species, and references that were overlooked are now included. 11 genera and 83 species are presently known from this region. Fil: Coscarón, María del Carmen. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. División Entomología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Volpi, Lorena Noeli. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. División Entomología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina

Sensillar structures of the antennal pedicel are investigated in Reduviidae and Pachynomidae. The cave organ, a presumably chemoreceptive structure, previously reported only for haematophagous Triatominae, is described here also for representatives of Peiratinae, Reduviinae and Stenopodainae. The systematic implication of the occurrence of this sensillar structure is discussed. Further, four sclerites located in the membrane between pedicel and preflagelloid are described and used as landmarks for the recognition of individual trichobothria in Reduviidae and Pachynomidae. Characters of the trichobothrial socket are studied and discussed systematically. Homology of the distalmost trichobothrium of Reduviidae with the single trichobothrium in Pachynomidae is proposed. This hypothesis is based on the structure of the cuticle surrounding the trichobothria and on the trichobothrial position relative to the four sclerites of the pedicello-flagellar articulation. The single trichobothrium present in most nymphs corresponds to the distalmost trichobothrium in adult Reduviidae in position and structural detail. A reasonable hypotheses on the homology of individual trichobothria of the proximal row or field seen in most Reduviidae can so far only be formulated for Peiratinae.

Family Pachynomidae St��l 1873 We had followed Harris (1931, 1939, 1943) that treated Aphelonotus Uhler 1894 as a Nabidae, but this genus has now been included in the small family Pachynomidae St��l, 1873 (Carayon and Villiers, 1968); therefore it must be deleted from the catalog of Neotropical Nabidae. Some authors have considered the family Pachynomidae as related to the Nabidae (Cobben, 1978), but all analyses have demostrated that it is the sister group of the Reduviidae (Schuh and Stys, 1991, Schuh et al. 2009, Weirauch & Munro 2009)., Published as part of Coscar��n, Maria Del Carmen & Volpi, Lorena N., 2013, Nomenclatural and bibliographic corrections to the Catalog of Nabidae (Hemiptera: Heteroptera) for the Neotropical Region, pp. 93-96 in Zootaxa 3646 (1) on page 95, DOI: 10.11646/zootaxa.3646.1.9, http://zenodo.org/record/283761, {"references":["Stal, C. (1873) Enumeratio Hemipterorum. Bidrag till en forteckning ofver aller hittills kanda Hemiptera, jemte systematiska meddelanden. 3. Kongliga Svenska Vetenskaps-Akademiens Handlingar, 11 (2), 1 - 163.","Harris, H. M. (1931) The genus Aphelonotus (Hemiptera, Nabidae). Bulletin of the Brooklyn Entomological Society, 26, 13 - 19.","Harris, H. M. (1939) Miscelanea sobre Nabidae Sudamericanos. Notas del Museo de La Plata. Tomo IV. Zoologia, 26, 368 - 377.","Harris, H. M. (1943) Notes on some species of Aphelonutus (Hemiptera: Nabidae). Entomological News 54: 259 - 261.","Uhler, P. R. (1894) On the Hemiptera-Heteroptera of the Island of Grenada, West Indies. Proceedings of the Zoological Society 1894, 167 - 224.","Carayon, J. & Villiers, A. (1968) Etude sur les Hemipteres Pachynomidae. Annales de la Societe Entomologique de France (N. S.) 4 (3): 703 - 739.","Cobben, R. H. (1978) Evolutionary Trends in Heteroptera. Pt. 2. Mouthpart-structures and Feeding Strategies. Mededlingen Landbouwhogeschool 78 - 5. H. Veeman, Wageningen, the Netherlands.","Schuh, R. T. & Stys, P. (1991) Phylogenetic analysis of cimicomorphan family relationships (Heteroptera). Journal of the New York Entomological Society, 99, 298 - 350.","Schuh, R. T., C. Weirauch and W. C. Wheeler (2009) Phylogenetic relationships within the Cimicomorpha (Hemiptera: Heteroptera): a total-evidence analysis. Systematic Entomology, 34, 15 - 48. http: // dx. doi. org / 10.1111 / j. 1365 - 3113.2008.00436. x","Weirauch, C. & Munro J. B. (2009) Molecular phylogeny of the assassin bugs (Hemiptera: Reduviidae), based on mitochondrial and nuclear ribosomal genes. Molecular Phylogenetics and Evolution, 53 (1), 287 - 99. http: // dx. doi. org / 10.1016 / j. ympev. 2009.05.039"]}

Aphelonotus simplus (Uhler) Distribution in Argentina. Chaco, and Formosa (Carpintero 1998). Material studied: 2 males, park rangers’s house, 26°48’25” S – 59°36’26,5” W, 26-IX-2009, light trap, Dellapé, P.M. & Melo, M.C. cols., Published as part of Melo, Maria Cecilia, Dellape, Pablo Matias, Carpintero, Diego Leonardo & Montemayor, Sara Itzel, 2011, Heteroptera (Hemiptera) from the Chaco National Park (Argentina), pp. 1-19 in Zootaxa 2999 (1) on page 5, DOI: 10.11646/zootaxa.2999.1.1, http://zenodo.org/record/5280896, {"references":["Carpintero, D. L. (1998) Pachynomidae In: Coscaron, S. & Morrone, J. J. (Eds.) Biodiversidad de Artropodos terrestres de la Republica Argentina. Volumen 1. p. 153 - 154. Ediciones Sur. La Plata."]}

An inventory of aquatic and terrestrial Heteroptera (excluding Aradidae, Coreidae and Pentatomoidea), comprising 101 species in 23 families, collected in the Chaco National Park (NE Argentina) is presented. . Fifty species are new records to the Argentinean Chaco province, and six species represent new records to Argentina: Cryphula affinis (Distant), Valtissius distinctus (Distant) (Rhyparochromidae), Stenopoda subinermis Stål, Diaditus pilosicornis Bergroth (Reduviidae), Buenoa uhleri Truxal (Notonectidae), and Paravelia splendoris (Drake & Harris) (Veliidae). Fil: Melo, María Cecilia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Limnología "Dr. Raúl A. Ringuelet". Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Instituto de Limnología; Argentina Fil: Dellapé, Pablo Matías. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales “Bernardino Rivadavia”; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. División Entomología; Argentina Fil: Carpintero, Diego Leonardo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. División Entomología; Argentina Fil: Montemayor Borsinger, Sara Itzel. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. División Entomología; Argentina

Volpi, Lorena N., Coscarón, Maria Del Carmen (2010): Catalog of Nabidae (Hemiptera: Heteroptera) for the Neotropical Region. Zootaxa 2513: 50-68, DOI: 10.5281/zenodo.196077

Genus Aphelonotus Uhler 1894 Aphelonotus Uhler, 1894. Proceedings of the Zoological Society, 208. Type species: Aphelonotus simplus, monotypic. Aphelonotus: Champion, 1899. Biologia Centrali-Americana, 2: 297. Aphelonotus: Reuter, 1908. M��moires de la Soci��t�� Entomologique de Belgique, 15: 91. Aphelonotus: Harris, 1928. Entomologia Americana, 9: 3. confusus Harris, 1931 Aphelonotus confusus Harris, 1931 a. Bulletin of the Brooklyn Entomological Society, 26: 16. Female Holotype (USNM). Brazil: Madeira River above Manaos. fraterculus Harris, 1931 Aphelonotus fraterculus Harris, 1931 a. Bulletin of the Brooklyn Entomological Society, 26: 18. Male Holotype (USNM). Ecuador: Guayaquil. Guatemala. Panama: R��o Trinidad, Canal Zone. major Harris, 1931 Aphelonotus major Harris, 1931 a. Bulletin of the Brooklyn Entomological Society, 26: 19. Female Holotype (USNM). Brazil: Teffe. medius Harris, 1931 Aphelonotus medius Harris, 1931 a. Bulletin of the Brooklyn Entomological Society, 26: 18. Male Holotype (USNM). Brazil: Madeira River above Manaos. simplus Uhler, 1894 Aphelonotus simplus Uhler, 1894. Proceedings of the Zoological Society, 209. Champion, 1900. Biologia Centrali-Americana, 2: 297. Guatemala: Paraiso near Champerico and Paso Antonio. Antilles: Grenada. Harris, 1931 a. Bulletin of the Brooklyn Entomological Society, 26: 17. Cotype (USNM). Brazil: Mato Grosso. Paraguay: Chaco, Published as part of Volpi, Lorena N. & Coscar��n, Maria Del Carmen, 2010, Catalog of Nabidae (Hemiptera: Heteroptera) for the Neotropical Region, pp. 50-68 in Zootaxa 2513 on pages 54-55, DOI: 10.5281/zenodo.196077, {"references":["Uhler, P. R. (1894) On the Hemiptera-Heteroptera of the Island of Grenada, West Indies. Proceedings of the Zoological Society 1894, 167 - 224.","Champion, G. C. (1897 - 1901) Insecta: Rhynchota (Hemiptera-Heteroptera), Volume II. In: Godman, F. D. and Salvin, O. (Eds.), Biologia Centrali-Americana, printed by Taylor and Francis, London, xvi + 1 - 416, 22 plates. [Nabidae: 1899, 297 - 304; 1900, 305 - 306]","Reuter, O. M. (1908) Bemerkungen uber Nabiden nebst Beschreibung neuer Arten. Memoires de la Societe Entomologique de Belgique, 15, 87 - 130.","Harris, H. M. (1928) A monographic study of the hemipterous family Nabidae as it occurs in North America. Entomologica Americana, 9,1 - 97.","Harris, H. M. (1931 a) The genus Aphelonotus (Hemiptera, Nabidae). Bulletin of the Brooklyn Entomological Society, 26, 13 - 19."]}

The Neotropical genus CamarochilusHarris, 1930 (Hemiptera: Pachynomidae) was described based on two species from Panama and Brazil. The genus has not been revised since its original treatment, and specimens beyond the original type series have remained undocumented. Based on examination of 57 specimens, including holotypes or paratypes of the previously described species, we here revise Camarochilus and recognize 10 species, with eight described as new: C. fasciatus, n. sp., C. gilli, n. sp., C. globosus, n. sp., C. harrisi, n. sp., C. medius, n. sp., C. picturatus, n. sp., C. robustus, n. sp., and C. tenuis, n. sp. Habitus images are provided for all species, male and female genitalic structures are documented, and various morphological characters are illustrated using digital photography. Measurements are included for all species. Male genitalic characters including the degree of asymmetry and type of ornamentation of the pygophore and shape of parameres constitute important species-diagnostic features, in addition to coloration and measurements. Distribution maps illustrate that species occur from Bolivia to Honduras, a considerable expansion of the previously known species distribution ranges in this genus.