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Divergita biformis, Lobban, sp. nov. Figs. 26–28. Diagnosis:— Valves straight, lanceolate with weakly capitate apices. Striae biseriate and decussate only on the mantle, striae on valve face mostly uniseriate with quadrangular areolae; sternum linear, very narrow. Description:— Live cells not observed. Valves seen in LM (Figs 24, 25) were from different samples from the SEM holotypes and could not be identified to D. divergita vs. D. decipiens (see below). Valves straight, 76 µm long, 4 µm wide, lanceolate with weakly capitate apices (Fig. 26). Striae 26–28 in 10 µm, biseriate on the margin with triangular areolae alternating and thus forming a decussate pattern, becoming largely uniseriate on the valve face with up to four quadrate areolae (Figs 27, 28). Sternum linear and very narrow. A hyaline area at each apex with a rimoportula in each. Apical pore field apparently with three rows of pores and not sunken. Holotype hic designatus:— Figs 26–28 from stub 1116 (GUAM diatom herbarium, catalog # 701116), according to Article 40.5 of the International Code of Nomenclature for algae, fungi, and plants (Shenzhen Code) (Turland et al. 2018). Registration: http://phycobank.org/102756. Type locality: — F.S. M. Yap: reef flat near channel to Colonia, 13.464 N, 144.656 E, dense farmer fish turf scraped from Acropora coral, ca. 1 m deep, sample Y45-5. C.S. Lobban and M. Schefter, 31 May 2014 . Etymology:— named for the two patterns of areolae in the striae. Additional Records:— F.S.M. Yap: Nimpal MPA, Y36-2!, Y36-4!; GUAM: GU52Q-1a!, GU44AP-8! Comments:— Similar specimens occurred in several samples from each of Guam and Yap but were always rare. There was considerable variation among these specimens and some clear differences, so I have chosen to define two species on the basis of ultrastructural details. For this species, defined on the specimen from Y45-5, I found no internal aspect but for D. decipiens the internal view shows the characteristics of Divergita, which do not vary between species., Published as part of Lobban, Christopher S., 2021, New species of benthic marine diatoms (Bacillariophyta) from the Western Pacific islands of Guam and Yap, pp. 235-265 in Phytotaxa 508 (3) on page 242, DOI: 10.11646/phytotaxa.508.3.1, http://zenodo.org/record/5425968, {"references":["Turland, N. J., Wiersema, J. H., Barrie, F. R., Greuter, W., Hawksworth, D. L., Herendeen, P. S., Knapp, S., Kusber, W. - H., Li, D. - Z., Marhold, K., May, T. W., McNeill, J., Monro, A. M., Prado, J., Price, M. J. & Smith, G. F. (Eds.) (2018) International Code of Nomenclature for algae, fungi, and plants (Shenzhen Code) adopted by the Nineteenth International Botanical Congress Shenzhen, China, July 2017. Regnum Vegetabile 159. Glashutten: Koeltz Botanical Books. https: // doi. org / 10.12705 / Code. 2018"]}

Divergita decipiens Lobban, sp. nov. Figs 29–32. Diagnosis:— Differing from D. biformis in striae on valve face comprising irregular, transapically oval areolae with wide virgae, and in having a prominent, lanceolate sternum. Description:— Valves straight, 94 µm long, 4 µm wide, lanceolate with weakly capitate apices (Figs 29, 30, 32). Striae 28 in 10 µm, decussate on margin becoming uniseriate on valve face with generally three narrow, irregular, transapically elongated areolae, separated by wide virgae compared to D. biformis (Figs 30, 31). Sternum broad and lanceolate. A hyaline area at each apex with a rimoportula in each. Internally, the rimoportulae asymmetrical and a line of foramina along each boundary between valve face and mantle (Fig. 32). Holotype hic designatus:— Figs 29–31 from stub 566 (GUAM diatom herbarium, catalog # 700566), according to Article 40.5 of the International Code of Nomenclature for algae, fungi, and plants (Shenzhen Code) (Turland et al. 2018). Registration: http://phycobank.org/102757. Type locality:— GUAM: Apra Harbor, Outhouse Beach, 13.464 N, 144.656 E, in algal turf from farmer fish (Stegastes nigricans) territory, ca. 3 m deep, sample GU52R-2. C.S. Lobban and M. Schefter, 24 July 2013 . Etymology:— Named for its deceptive similarity to D. biformis. Comments:— This species was initially confounded with D. biformis, because length and stria densities are very similar. However, given the use of sternum characters to distinguish species in the related genus Hyalosynedra (Sabir et al. 2018), the broader, lanceolate sternum here, combined with the different appearance of areolae on the valve face, marked D. decipiens as a separate species, and required that both be typified by SEM images. This species seems slightly narrower than D. biformis (compare Figs. 26, 29) but several other specimens from Guam with some further variation in characters have been left unidentified for the present. It is likely that there is more diversity in Divergita to be discovered through SEM surveys of coral reef samples. It is possible that the rarity of these specimens is because they are being deposited into the samples from elsewhere (planktonic?), rather than growing in the farmer fish territories., Published as part of Lobban, Christopher S., 2021, New species of benthic marine diatoms (Bacillariophyta) from the Western Pacific islands of Guam and Yap, pp. 235-265 in Phytotaxa 508 (3) on page 242, DOI: 10.11646/phytotaxa.508.3.1, http://zenodo.org/record/5425968, {"references":["Turland, N. J., Wiersema, J. H., Barrie, F. R., Greuter, W., Hawksworth, D. L., Herendeen, P. S., Knapp, S., Kusber, W. - H., Li, D. - Z., Marhold, K., May, T. W., McNeill, J., Monro, A. M., Prado, J., Price, M. J. & Smith, G. F. (Eds.) (2018) International Code of Nomenclature for algae, fungi, and plants (Shenzhen Code) adopted by the Nineteenth International Botanical Congress Shenzhen, China, July 2017. Regnum Vegetabile 159. Glashutten: Koeltz Botanical Books. https: // doi. org / 10.12705 / Code. 2018","Sabir, J. S. M., Theriot, E. C., Lobban, C. S., Alhebshi, A. M., Al-Malki, A. L., Hajrah, N. H.,. Khiyami, M. A, Obaid, A. Y., Jansen, R. K. & Ashworth, M. P. (2018) Systematics of araphid diatoms with asymmetric rimoportulae or densely packed virgae, with particular attention to Hyalosynedra (Ulnariaceae, Bacillariophyta). Phytotaxa 347: 1 - 49. https: // doi. org / 10.11646 / phytotaxa. 347.1.1"]}

Parlibellus paschalis Lobban, sp. nov. Figs 70–78. Diagnosis:— Differing from P. delognei (Van Heurck 1880: pl. 11) E.J. Cox 1988: 19 in lacking the cuniculus and pores in the central area and smaller size, and from P. berkeleyi (Kützing 1849: 106) E.J. Cox 1988: 21 in width and stria density. Description:— Tube-dwelling cells with plastids reminiscent of a hot cross bun in valve view, a butterfly in girdle view (Figs 70–72). Frustules, often remaining together after acid cleaning (Fig. 73), with numerous copulae (Fig. 74). Valves elliptico-lanceolate, 28–35 µm long, 10.5–12.5 µm wide (Figs 75–78). Striae 25–26 in 10 µm except slightly more distant (21 in 10 µm) in those adjacent to central area, weakly radiate in the central area, otherwise parallel, continuing around the apices (Figs 75–78). Striae punctate, the external areolae openings circular to transapically elongate, internally circular. Areolae closest to the raphe sternum somewhat more prominent (Fig. 77, arrow). Central area lacking isolated pores. External central raphe endings 4–6 striae apart, straight, extending into the narrowly oval central area, which as defined by the line of areolae is 11–12 striae long. External terminal raphe endings subapical (ca. 5 striae short of apex) with a small hook into a small hyaline area 1–2 striae wide. Internal raphe endings straight, a small helictoglossa at each terminus; no cuniculi at the central endings. Holotype hic designatus:— specimen at 16.1 mm E and 9.7 mm S of the mark on slide 192, deposited at ANSP, accession # ANSP-GC20094. Fig. 75. Registration: http://phycobank.org/102762. Type locality:— GUAM: Apra Harbor, GabGab reef, 13.443 N, 144.643 E, farmer fish (Plectroglyphidodon lacrimatus) territory 7–8 m depth, sample GU44L-C. C.S. Lobban and M. Schefter, 2 March 2008. Etymology:— paschalis, L. adjective referring to Easter, with reference to the resemblance of the live cells in valve view to the Eastertime bakery item, hot cross buns. Additional Records:— GUAM: GabGab reef, Apra Harbor, GU44I-2!, GU44K-6!. Comments:— This species is most like P. delognei f. elliptica (Lobban 1983: 287) Cox 1988: 21 but differs in lacking the cuniculus that is characteristic of both forms of delognei, along with associated pores in the central area. [A cuniculus (Ross et al. 1979, Cox 1978) “comprises a simple pore in the external central area connecting with an elongate perforate raised structure terminating the internal raphe fissures in the central area.”] It is also shorter and narrower than that form, though wider than P. berkeleyi. The colony structure is similar to the narrow threads of the nominate variety of P. delognei but much different from the large, cold-water colonies of var. elliptica (Cox 1988, Lobban 1983). The stria density is higher than other similar species (Table 2), including P. berkeleyi (16–18 in 10 µm)., Published as part of Lobban, Christopher S., 2021, New species of benthic marine diatoms (Bacillariophyta) from the Western Pacific islands of Guam and Yap, pp. 235-265 in Phytotaxa 508 (3) on pages 251-252, DOI: 10.11646/phytotaxa.508.3.1, http://zenodo.org/record/5425968, {"references":["Van Heurck, H. (1880) Synopsis des Diatomees de Belgique Atlas. Anvers: Ducaju et Cie. pls I - XXX [pls 1 - 30].","Cox, E. J. (1988) Taxonomic studies on the diatom genus Navicula. V. The establishment of Parlibellus gen. nov. for some members of Navicula sect. Microstigmaticae. Diatom Research 3: 9 - 38. https: // doi. org / 10.1080 / 0269249 X. 1988.9705014","Kutzing, F. T. (1849) Species algarum. pp. [i] - vi, [1] - 922. Lipsiae [Leipzig]: F. A. Brockhaus.","Lobban, C. S. (1983) Colony and frustule morphology of three tube-dwelling diatoms from eastern Canada. Journal of Phycology 19: 281 - 289. https: // doi. org / 10.1111 / j. 0022 - 3646.1983.00281. x","Ross, R., Cox, E. J., Karayeva, N. I., Mann, D. G., Paddock, T. B. B., Simonsen, R. & Sims, P. A. (1979) An amended terminology for the siliceous components of the diatom cell. Nova Hedwigia Beihefte 64: 513 - 533.","Cox, E. J. (1978) Taxonomic studies on the diatom genus Navicula Bory. Navicula grevillii (C. A. Ag.) Heiberg and N. comoides (Dillwyn) H. & M. Peragallo. Botanical Journal of the Linnaean Society 76: 127 - 143. https: // doi. org / 10.1111 / j. 1095 - 8339.1978. tb 01502. x"]}

Climaconeis tarangensis Lobban, sp. nov. Figs 45–49. Diagnosis:— Curved species without craticular bars or stauros, differing from Climaconeis riddleae A.K.S.K. Prasad 2003: 14 in its lower stria density (20 vs 24–27 in 10 µm) and regular apically rectangular areolae. Description:— Living cells not observed. Valves arcuate, 121–124 µm long, 4.5 µm wide at center, gradually tapering to 3.0 µm just before the weakly capitate apices, 3.5 µm wide (Fig. 45). Striae 20–21 in 10 µm, parallel except convergent near apices and radiating around the apex; areolae apically rectangular (Figs 46–49). Raphe biarcuate (Fig. 45), the raphe slit partially covered by an irregular flap along the ventral side (Figs 46, 47). External central raphe endings turned slightly ventral, terminal endings nearly straight. Internal raphe with a rib along one side, helictoglossa at the apex (Figs. 48, 49). Copulae with two rows of apically-oriented pores similar to those on the valve (Figs 46, 47). Holotype hic designatus:— Specimen at 9.0 mm E, 6.4 mm S of the mark on slide 512, deposited at ANSP, accession # ANSP-GC20095. Fig. 45. Registration: http://phycobank.org/102760. Type locality:— F.S.M. Yap State: Tarang (“ O’Keefe’s Island ”), 9.525 N, 138.132 E; subtidal sediments from 15 m depth, sample Y26 C. C.S. Lobban and M. Schefter, 25 September 1988 . Etymology:— Named for the type locality. Comments:— This species is very similar to C. riddleae, which has been recorded from Guam (Lobban et al. 2011) and Chuuk (Park et al. in prep.), but Prasad (2003) described the areolae of that species thus: “squarish or subrectangular poroids… [sometimes] slightly apically elongated, especially at the apices.” In C. tarangensis the areolae are distinctly apically elongate even in the central part of the cell. Prasad’s images show a row of somewhat larger, square areolae along the ventral side of the raphe sternum (the same side that bears the silica flaps). While the differences in stria density and areola shape are small, it has become clear in this genus that such details must be taken into account in discriminating species [e.g., in distinguishing C. mabikii J.Park, Khim & J.H.Lee 2016: 592 from C. undulata (Meister 1932: 41) Lobban, Ashworth & E.C.Theriot 2010: 295 – Park et al. 2016]. For C. tarangensis, with C. riddleae known from the region, it is especially clear that the differences cannot be dismissed as geographic variation between Atlantic and Pacific Ocean basins., Published as part of Lobban, Christopher S., 2021, New species of benthic marine diatoms (Bacillariophyta) from the Western Pacific islands of Guam and Yap, pp. 235-265 in Phytotaxa 508 (3) on page 246, DOI: 10.11646/phytotaxa.508.3.1, http://zenodo.org/record/5425968, {"references":["Prasad, A. K. S. K. (2003) Fine structure and taxonomy of two species of the marine diatom genus Climaconeis (Berkeleyaceae, Bacillariophyta): C. silvae sp. nov. and C. riddleae sp. nov. from the Caribbean Sea and Florida Bay, U. S. A. Hidrobiologica 13: 9 - 22. [http: // www. scielo. org. mx / scielo. php? script = sci _ arttext & pid = S 0188 - 88972003000100002]","Lobban, C. S., Schefter, M. & Ruck, E. C. (2011) Licmophora flucticulata sp. nov. (Licmophoraceae, Bacillariophyceae), an unusual flabellate species from Guam and Palau. Phycologia 50: 11 - 22. https: // doi. org / 10.2216 / 09 - 85.1","Meister, F. (1932) Kieselalgen aus Asien. Berlin: Gebruder Bornetraeger.","Park, J., Lee, J. H. & Khim, J. S. (2016) The identity of ' Berkeleya scopulorum ' from northeast Asia: report on Climaconeis mabikii sp. nov. from temperate marine waters with notes on biogeography of the genus. Ocean Science Journal 51: 591 - 598. https: // doi. org / 10.1007 / s 12601 - 016 - 0059 - z"]}

Gato Lobban & J.N. Navarro gen. nov. Frustula heteropolara heterovalvaraque, subtiliter striata, sterno angusto irregulari. Striae porosae, uniseriatae, marginem valvarum attingentes. Rimoportula grandior ad polum basalem valvae unae, rimoportula parvior ad polos apicales ambo valvarum. Series pororum marginatorum secus marginem valvarum utrinque poli basalis. Frustules heteropolar and heterovalvar, finely striated with narrow, irregular sternum. Striae porate, uniseriate, continuing to valve border. Larger rimoportula at foot pole of one valve, one smaller rimoportula at head pole of each valve. Row of rimmed pores along valve margin on each side of the foot pole.

Lobban, Christopher S., Navarro, J. Nelson (2013): Gato hyalinus gen. et sp. nov., an unusual araphid tube-dwelling diatom from Western Pacific and Caribbean islands. Phytotaxa 127 (1): 22-31, DOI: 10.11646/phytotaxa.127.1.6, URL: http://dx.doi.org/10.11646/phytotaxa.127.1.6

Gato hyalinus Lobban & J.N. Navarro sp. nov. (Figs 1���21) Cellulae coloniales in tubis brevibus mucilaginis interdum ramosis. Chloroplasti numerosi lenticulares elongati. Valvae ovales parum angustatae versus basem, longitudine 30���40 ��m, latitudine 13���15 ��m. Striae transapicales tenuissimes, ca. 60���70 in 10 ��m, paralleles praeter e extremo apicali sterni radians et prope polum basalem obliquaras. Rimoportula poli basalis in palla valvarum; rimoportula poli apicalis ad vel ultra extremum apicali sterni, prope pallam. Pori marginati non solum 3���5 in quoque lato poli basalis, in exemplum valvae rimoportula basali ferens una cum paribus striarum obliquarum e unusquaque versus sternum extensarum, sed etiam aliquot irregulariter in striis transapicalis prope marginem positis. Cells colonial in short, sometimes branched mucilage tubes. Plastids numerous, elongate lenticular. Valves oval, slightly tapered toward foot pole, length 30���40 ��m, width 13���15 ��m. Transapical striae extremely fine, ca. 60���70 in 10 ��m, parallel except radiating from head pole of sternum, and oblique at foot pole. Foot pole rimoportula on valve margin; head pole rimoportulae at or beyond end of sternum, near edge of mantle. Rimmed pores 3-5 on each side of the foot pole, on valve with basal rimoportula associated with pairs of oblique striae extending from each toward the sternum, and several others irregularly placed on transapical striae near margin. Type:��� GUAM. Apra Harbor, GabGab reef, 13�� 26' 33.63" N, 144�� 38' 34.25" E, acid cleaned material of diatoms, epiphytic on algal turf in farmer fish territories, collected 20 June 2009, GU44Z-15, strewn on microscope slide and filtered onto Millipore�� filter paper. (Specimen circled on microscope slide marked CAS #223005, accession #627383, holotype, designated here; SEM stub of collection GU44Z-15 [deposited as holotype of the bleakeleyoid diatom Perideraion decipiens Lobban in Lobban et al. (2011)], CAS #627385, isotype, designated here). Etymology:���hyaline, with reference to the lack of structure visible in LM. Additional specimens examined: ��� GUAM: Agana Boat Basin, epiphytic on algal turf just below low water line, 29 November 1988, GU26A; GabGab, Apra Harbor, epiphytic on algal turf in farmer fish territories, 3 August 2008, GU44O-F, 1 September 2008, GU44P-B, 28 March 2009, GU44W- 10 and 10 May 2009, GU44Y-13; Pete���s Reef, Facpi Pt., 7 September 2008, GU55A-C. PALAU. Toachel ra Ngel, Ulebsechel I., 13 April 2009, PW2009-40. PUERTO RICO: Caja de Muertos Island, 27 December 1985; Enrique Reef, 7 m deep epiphyte on the red alga Amphiroa sp., 8 April 1994, slide #C94-6. JAMAICA: Sponge Gardens, St Ann, 27 m deep, 19 November 1995, slide #A96-14 . Observations:��� Colonies (Figs 1���4) are a few cells long, sometimes branched, each cell at the end of a section of tube, from which the next section arose off-center; Fig. 4 suggests at least a temporary septum within the tubes. In Fig. 1 there appear to be cohabitant naviculoids in the tubes; these have not been commonly observed. Gato hyalinus cells are broadly oval, slightly narrower at the basal end, apparently with many elongate-lenticular plastids (Figs 1���4), and the cells arranged in the colonies with the narrower pole toward the base. Frustules are also slightly tapered in girdle view (Fig. 4). In acid-cleaned valves in LM (Figs 5, 6), the rimoportulae can be seen, and sometimes a faint sternum, but the striae are too fine to resolve and the valves appear hyaline. In SEM, the valve surface is smooth, with rounded margins, striae 60���70 in 10 ��m consisting of uniseriate rows of simple circular pores (Fig. 19) that extend to the valve border (Figs 7, 8, 10, 11, 20). In places, the pattern could be described as quincunx (e.g., Fig. 13) but the spacing between pores in the striae is generally insufficiently consistent. There is a narrow, irregular break in the striae along the centerline, barely constituting a sternum (Figs 7���16, 20). Striae are parallel except at the head pole, where they radiate from the end of the sternum (Figs 16, 20), and in association with the rimmed pores (Figs 8, 10). Both valves have a small rimoportula at the head pole near the valve apex, at or beyond the end of the sternum (Figs 9, 12, 13, 16, 20), but the two valves are different at the foot pole. There, only one valve of the frustule has a rimoportula and more strongly oblique striae ���the ���cat���s whiskers��� for which the genus is named (Figs 8, 10), the other valve lacks a rimoportula at the foot pole (Figs 12���20). Both foot poles have several large rimmed pores, i.e., that have slightly thickened rims internally (Figs 7, 8, 10, 11, 15, 17). There are two series of rimmed pores, typically 4���5 on each side of the foot pole on the valve with a rimoportula; there are only 3 on those without a foot-pole rimoportula. In addition several irregularly placed pores occurred near the foot pole on both valves, interrupting 2 or more striae (Fig. 15, 18), but are not observed near the head pole. On valves with a basal rimoportula there are pairs of oblique striae extending from the sternum to the basal set of rimmed (Figs 7, 8, 10, 11); these are not obvious on valves without a basal rimoportula, where only some irregularity in the striae was observed (Figs 14, 15, 17). We have little information on girdle bands, but they appear to be finely punctate (Fig. 21), similar to the valve surface. Genera morphologically most similar to Gato are Florella and Licmophora. We do not suggest that either of these is related to Gato. Besides Navarro���s (1982, 1996, 2002) descriptions, we have observed Florella portoricensis Navarro (1982: 248, 258, emend Navarro 1996: 304) (Fig. 22) and Florella pascuensis Navarro (2002: 284) (Fig. 23) from the Republic of the Marshall Islands; this is the first confirmed report of these species from that country, and the first confirmed record of F. portoricensis from the Pacific Ocean. In addition Lobban et al. (2012) observed and cultured samples of F. pascuensis from Guam. The valves of Florella spp. are isopolar with parallel striae of cribrate areolae continuing unbroken to the valve border from an indistinct sternum; there are no pore fields. F. portoricensis has a series of rudimentary rimoportulae at each apex, indistinguishable from areolae except in internal SEM views, whereas F. pascuensis has two labiate rimoportulae, one at each end of the sternum, visible even in LM (Navarro 1996, 2002). F. pascuensis also has a unique pattern of slit-like areolae at each end. Frustules of Licmophora spp., on the other hand, are heteropolar and heterovalvar. A series of (5 to>30) simple slits at the foot pole is developed into a distinctive multiscissura (Figs 24, 25). The areolae (Fig. 24) are separated by virgae and viminae (Honeywill 1988). Although the rimoportulae of most Licmophora species are labiate rimoportulae (Fig. 25), in L. flabellata (Carmichael mscr. 1826, according to Agardh) C. Agardh (1831: 41, emend Sar & Ferrario 1990: 404) the head pole rimoportula and the unique series of extra rimoportulae along the sternum lack labia (Fig. 26). These have been characterized by Sar & Ferrario (1990) as ���sessile rimoportulae��� and are perhaps similar in structure (though not position) to the rimmed pores in Gato., Published as part of Lobban, Christopher S. & Navarro, J. Nelson, 2013, Gato hyalinus gen. et sp. nov., an unusual araphid tube-dwelling diatom from Western Pacific and Caribbean islands, pp. 22-31 in Phytotaxa 127 (1) on pages 23-28, DOI: 10.11646/phytotaxa.127.1.6, http://zenodo.org/record/5085431, {"references":["Lobban, C. S., Ashworth, M. P., Arai, Y., Jordan, R. W. & Theriot, E. C. (2011) Marine necklace-chain Fragilariaceae (Bacillariophyceae) from Guam, including descriptions of Koernerella and Perideraion, genera nova. Phycological Research 59: 175 - 193. http: // dx. doi. org / 10.1111 / j. 1440 - 1835.2011.00616. x","Navarro, J. N. (1982) A survey of the marine diatoms of Puerto Rico. IV. Suborder Araphidinae: Families Diatomaceae and Protoraphidaceae. Botanica Marina 25: 247 - 263. http: // dx. doi. org / 10.1515 / botm. 1982.25.6.247","Navarro, J. N. (1996) New observations on the araphid diatom Florella portoricensis (Florellaceae fam. nov.). Diatom Research 11: 297 - 304. http: // dx. doi. org / 10.1080 / 0269249 x. 1996.9705386","Navarro, J. N. (2002) Florella pascuensis sp. nov., a new marine diatom species from Easter Island (Isla de Pascua), Chile. Diatom Research 17: 283 - 289. http: // dx. doi. org / 10.1080 / 0269249 x. 2002.9705548","Lobban C. S., Schefter, M., Jordan, R. W., Arai, Y., Sasaki, A., Theriot, E. C., Ashworth, M., Ruck, E. C. & Pennesi, C. (2012) Coral-reef diatoms (Bacillariophyta) from Guam: new records and preliminary checklist, with emphasis on epiphytic species from farmer-fish territories. Micronesica 43: 237 - 479.","Agardh, C. A. (1831) Conspectus criticus Diatomacearum. Part 3. Lundae. Litteris Berlingianis, pp. 33 - 48.","Sar, E. A. & Ferrario, M. E. (1990) Licmophora flabellata. Ultrastructure and taxonomy. 1. Implication. Diatom Research 5: 403 - 408. http: // dx. doi. org / 10.1080 / 0269249 x. 1990.9705130"]}

Gato Lobban & J.N. Navarro gen. nov. Frustula heteropolara heterovalvaraque, subtiliter striata, sterno angusto irregulari. Striae porosae, uniseriatae, marginem valvarum attingentes. Rimoportula grandior ad polum basalem valvae unae, rimoportula parvior ad polos apicales ambo valvarum. Series pororum marginatorum secus marginem valvarum utrinque poli basalis. Frustules heteropolar and heterovalvar, finely striated with narrow, irregular sternum. Striae porate, uniseriate, continuing to valve border. Larger rimoportula at foot pole of one valve, one smaller rimoportula at head pole of each valve. Row of rimmed pores along valve margin on each side of the foot pole., Published as part of Lobban, Christopher S. & Navarro, J. Nelson, 2013, Gato hyalinus gen. et sp. nov., an unusual araphid tube-dwelling diatom from Western Pacific and Caribbean islands, pp. 22-31 in Phytotaxa 127 (1) on page 23, DOI: 10.11646/phytotaxa.127.1.6, http://zenodo.org/record/5085431