Bemlos tridentatus Myers 1988
Creators: name: Myers, Alan A.
Publisher: name: Zenodo
Year: 2009
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Malacostraca
Amphipoda
Aoridae
Bemlos
Bemlos tridentatus

description: <i>Bemlos tridentatus</i> Myers, 1988 (Figs 23, 24) <i>Bemlos tridentatus</i> Myers, 1988b: 289, figs 20–21. — Lowry &amp; Stoddart, 2003: 69 (catalogue). <b>Material examined.</b> Not collected in the current study. <b>Type locality.</b> Reef off North Point, Lizard Island, Queensland, Australia (14°40'S 145°28'E). <b>Description.</b> Based on holotype, male, 2.8 mm, AM P37426 (Myers, 1988b). <b>Head.</b> <i>Head</i> lateral cephalic lobes apically truncate. <i>Antenna 1</i> flagellum with 10 or less articles; accessory flagellum 3-articulate. <i>Antenna 2</i> stout, peduncular article 3 swollen, article 4 broad, with few long setae. <i>Lower lip</i> with fine setae and stout setae. <i>Maxilla 1</i> basal inner plate with 1 long pectinate apical seta. <i>Mandible</i>, palp article 3 longer than 2, posterior margin convex, posterior margin with setae of more than two distinct lengths. <b>Pereon.</b> <i>Pereonites 3–5</i> with apically acute sternal spines, <i>Gnathopod 1</i> enlarged in males only; coxa distinctly produced anterodistally, sub-acute; basis robust, half or more as broad as long, without a posterodistal spine, posterodistal margin with one seta, anterodistal margin with strong flange; ischium anterior margin without flange, posterior margin with one seta; merus not greatly elongated, fused along its entire length with carpus, posterior margin with few setae, without posterodistal spine; carpus 1.3 x length of propodus, anterior margin without spine, posterior margin with 3 stout spines, the distal the largest; propodus anterior margin weakly setiferous, posterior margin straight, palm present, delimited from posterior margin, defined by weak posterodistal spine, with robust seta defining palm, without spine near base of dactylus; dactylus more than half length of propodus, slightly overlapping palm. <i>Gnathopod 2</i> subchelate; basis anterodistal margin with strong flange produced into an anterodistal lobe, posterodistal margin without robust setae; merus not enlarged or produced away from carpus; carpus subequal with or a little shorter than propodus, anterior margin not lobate, with short sparse setae; propodus with short sparse setae, palm with robust seta defining palm. <i>Pereopod 3</i> without brush of long setae on merus. <i>Pereopod 6</i> basis not produced posterodistally. <i>Pereopod 7</i> significantly greater than 125% length of pereopod 6. <b>Pleon.</b> <i>Epimeron 3</i> posterodistal margin rounded. <i>Uropod 1</i> rami subequal, peduncle much longer than broad, distoventral spine less than half length of peduncle. <i>Uropod 2</i> biramous; peduncle with distoventral spine, half length of peduncle. <i>Uropod 3</i> biramous, rami subequal, inner ramus 1.5 x length of peduncle. <i>Telson</i> with distal fine setae only. <b>Female</b> (sexually dimorphic characters). Based on paratype, female, 2.9 mm, AM P37427 (Myers 1988b). Sternal spines absent. <i>Gnathopod 1</i> basis a little more slender than that of male; carpus slender, subequal in length with propodus or one and one third to one and one half length of propodus, posterior margin without spines; propodus subequal in length to carpus, palm defined by rounded corner. <i>Gnathopod 2</i> basis slender, anterodistal margin without flange. <b>Habitat.</b> Coral rubble. <b>Remarks.</b> This species differs from all other Great Barrier Reef species of <i>Bemlos</i> by the tridentate carpus of the male gnathopod 1. <b>Distribution.</b> <i>Australia</i>., Queensland: off North Point, Lizard Island (Myers 1988b).
description: Published as part of <i>Myers, Alan A., 2009, Aoridae *, pp. 220-278 in Zootaxa 2260 (1)</i> on pages 250-251, DOI: 10.11646/zootaxa.2260.1.9, http://zenodo.org/record/5321091
description: {"references": ["Myers, A. A. (1988 b) The genera Archaeobemlos n. gen., Bemlos Shoemaker, Protolembos Myers and Globosolembos Myers (Amphipoda, Aoridae, Aorinae) from Australia. Records of the Australian Museum, 40, 265 - 332.", "Lowry, J. K. &amp; Stoddart, H. E. (2003) Crustacea: Malacostraca: Peracarida: Amphipoda, Cumacea, Mysidacea. In Beesley, P. L. &amp; Houston, W. W. K. (Eds), Zoological Catalogue of Australia, Vol. 19.2 B, 531 pp, Melbourne: CSIRO Publishing, Australia."]}