Tryphosella charlotteae Lowry &amp; Stoddart 2009, sp. nov.
Creators: name: Lowry, J. K.
name: Stoddart, H. E.
Publisher: name: Zenodo
Year: 2009
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Malacostraca
Amphipoda
Tryphosidae
Tryphosella
Tryphosella charlotteae

description: <i>Tryphosella charlotteae</i> sp. nov. (Figs 17, 18) <b>Type material.</b> Holotype, female, ovigerous (at least 8 eggs), 12 mm, AM P69114, 100 metres north-east of sand spit, One Tree Island, Queensland, Australia (23°30'S 152°05'E), 1 m, large corer in coarse sand, C. Short &amp; J. Young, 20 October 1979 (QLD 101). Paratype: male, 10mm, AM P69115, same station data as holotype. Paratypes: 1 ovigerous female, 1 immature specimen, AM P69111, Reef 'C', One Tree Island lagoon, Queensland, Australia (23°30'S 152°05'E), 5.5 m, light trap over sand, 2005 hours, P.S. McWilliam, 27 November 1977 (QLD 98). Paratypes: 1 ovigerous female, 1 adult male, 2 immature specimens, AM P69112, One Tree Island lagoon, Queensland, Australia (23°30'S 152°05'E), light trap 2 metres away from reef, 2207 hours, P.S. McWilliam, 14 November 1976, OT 208 (QLD 99). Paratypes: 1 male, 3 immature specimens, AM P69113, One Tree Island lagoon, Queensland, Australia (23°30'S 152°05'E), light trap, P.S. McWilliam, November 1975 or 1977 (QLD 100). <b>Additional material examined</b>. 1 male, AM P69116 (QLD 102); 1 unsexed, AM P71853 (Kimbla 2); 1 male, AM P69117 (Kimbla Q 11). <b>Type locality.</b> 100 metres north-east of sand spit, One Tree Island, Queensland, Australia (23°30'S 152°05'E). <b>Etymology.</b> Named for Charlotte Watson, one of the collectors of the type material. <b>Description.</b> Based on holotype, female, 12 mm, AM P69114 and paratype male, 10 mm, AM P69115. <b>Head and body.</b> <i>Body</i> without dorsal carina. <i>Head</i> lateral cephalic lobes subtriangular, with apically rounded margins; eyes large, reniform, with ventral concave lens. <i>Antenna 1</i> shorter than antenna 2; flagellum with strong 2-field callynophore, robust setae absent from proximal articles; calceoli present; accessory flagellum with 4 articles. <i>Antenna 2</i> approximately half body length; peduncular articles 4 and 5 not enlarged, brush setae present; calceoli present. <i>Mouthparts</i> forming a subquadrate bundle. <i>Epistome</i> less produced than upper lip, straight. <i>Mandible</i> molar with asymmetrically reduced column, proximally setose, distally triturating; palp attached midway, article 3 with proximal A3-seta. <i>Maxilla 1</i> outer plate with setal-teeth in 6/5 arrangement; setal-tooth 7, left and right symmetrical, cuspidate along most of straight inner margin; palp distal margin with apical robust setae. <i>Maxilliped</i> outer plate with 2 short apical robust setae; palp 4– articulate, article 4 well developed. <b>Pereon</b>. <i>Gnathopod 1</i> subchelate; coxa slightly reduced, slightly shorter than coxa 2, slightly tapering and broadly rounded distally; basis moderately setose along anterior margin; ischium long (length 2.2 x breadth); carpus long (length 2.1 x breadth), subequal in length to propodus, without posterior lobe; propodus longer than broad, margins subparallel, palm acute. <i>Gnathopod 2</i> chelate; carpus longer than propodus; palm obtuse; dactylus minute. <i>Pereopod 4</i> coxa with distinct lateral ridge, with well developed posteroventral lobe. <i>Pereopod 5</i> coxa with distinct lateral ridge, equilobate; basis about as long as broad, with “photophore”. <i>Pereopod 7</i> basis posterior margin slightly serrated. <b>Pleon.</b> <i>Epimeron 3</i> posterior margin smooth, posterodistal corner rounded. <i>Urosomite 1</i> with anterodorsal notch and slightly rounded boss. <i>Uropod 1</i> rami subequal. <i>Uropod 2</i> rami subequal, inner ramus without marginal constriction. <i>Uropod 3</i> with plumose setae on each ramus; outer ramus 2-articulate, article 2 short (about 0.1 x article 1); inner ramus not extending beyond article 1 of outer ramus. <i>Telson</i> longer than broad, deeply cleft, with dorsal robust setae, with 1or 2 apical robust setae on each lobe. <b>Habitat.</b> Sandy bottoms from 1 to 82 m depth. <b>Remarks.</b> <i>Tryphosella charlotteae</i> is very similar to <i>T. mucronata</i> (Pirlot, 1936) from Waigeo Island in West New Guinea. Both species have a well developed “photophore” on the basis of pereopod 5. The strongest differences between these species are the shape of the posteroventral lobe of pereopod 4 coxa which is more rounded in <i>P. mucronata</i> and has a strong lateral ridge in <i>T. charlotteae</i>; and the pereopod 7 basis which tapers less and is almost straight posteroventrally in <i>T. mucronata</i>. Stebbing (1888) described <i>T. miersi</i> (as <i>Hippomedon miersi</i>) from east of Moncoeur Island in Bass Strait. He did not illustrate a “photophore” on the basis of pereopod 5, but it may have been missed in his single preserved specimen. <i>Tryphosella miersi</i> differs from <i>T</i>. <i>charlotteae</i> in not having any ridging on the coxae of pereopods 4 or 5. <b>Distribution.</b> <i>Australia</i>. Queensland: Lizard Island; One Tree Island; Fraser Island; Moreton Bay (all current study).
description: Published as part of <i>Lowry, J. K. &amp; Stoddart, H. E., 2009, Lysianassidae *, pp. 561-597 in Zootaxa 2260 (1)</i> on pages 587-590, DOI: 10.11646/zootaxa.2260.1.31, http://zenodo.org/record/5308147
description: {"references": ["Pirlot, J. M. (1936) Les amphipodes de l'expedition du Siboga. Deuxieme partie: Les amphipodes gammarides, II. - Les amphipodes de la mer profonde. 3: Addendum et partie generale. III. - Les amphipodes littoraux. 1: Lysianassidae, Ampeliscidae, Leucothoidae, Stenothoidae, Phliantidae, Colomastigidae, Ochlesidae, Liljeborgiidae, Oedicerotidae, Synopiidae, Eusiridae, Gammaridae. Siboga-Expeditie, Monographie, 33 e, 237 - 328.", "Stebbing, T. R. R. (1888) Report on the Amphipoda collected by H. M. S. Challenger during the years 1873 - 1876. Report on the Scientific Results of the Voyage of H. M. S. Challenger during the years 1873 - 76, Zoology 29, 1 - 1737, pls 1 - 210."]}