Photosella mucronata
Creators: name: Lowry, J. K.
name: Stoddart, H. E.
Publisher: name: Zenodo
Year: 2011
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Malacostraca
Amphipoda
Tryphosidae
Photosella
Photosella mucronata

description: <i>Photosella mucronata</i> (Pirlot, 1936) (Figs 5, 6) <i>Tmetonyx mucronatus</i> Pirlot, 1936: 275, fig. 108. —J.L. Barnard, 1958: 100. —J.L. Barnard, 1962: 30 (key). <i>Tryphosella mucronata</i>. — Barnard &amp; Karaman, 1991: 537. <b>Type locality.</b> North-west of Waigeo Island, West New Guinea, Indonesia, 0°3'8''N 130°24'E, 141 m depth. <b>Material examined.</b> All stations are north-west of Port Hedland, North West Shelf, Western Australia and were collected by the CSIRO on FRV <i>Soela</i>. 1 female and 1 male, AM P.71828, 19°56.8'S 117°53.4'E to 19°56.4'S 117°53.7'E, 42 m, beam trawl, 22 April 1983, stn NWS 02.B2.BT; 6 specimens, AM P.71829, 19°56.9'S 117°53.7'E to 19°56.4'S 117°53.8'E, 42–43 m, epibenthic sled, 22 April 1983, stn NWS 02.B2.S; 1 specimen, AM P.71830, 19°05.4'S 118°53.3'E to 19°05.428.2'S 118°54.1'E, 82 m, epibenthic sled, 27 April 1983, stn NWS 02.B4.S; 1 ovigerous female, AM P.71831, 19°56.4'S 117°53.9'E to 19°56.8'S 117°53.6'E, 44 m, epibenthic sled, 25 June 1983, stn NWS 03.B2.S; 3 specimens, AM P.71832, 19°56.8'S 117°53.5'E to 19°56.4'S 117°53.9'E, 44 m, beam trawl, 25 June 1983, stn NWS 03.B2.BT; 1 male, AM P.71833, 19°56.6'S 117°54.1'E to 19°56.3'S 117°53.9'E, 44 m, beam trawl, 26 August 1983, stn NWS 04.B2.BT; 1 male, AM P.71834, 19°56.7'S 117°53.6'E to 19°56.4'S 117°54.0'E, 41 m, epibenthic sled, 26 October 1983, stn NWS 05.B2.S; 1 male, AM P.71835, 19°29.7'S 118°52.0'E to 19°29.4'S 118°52.5'E, 39 m, epibenthic sled, 25 October 1983, stn NWS 05.D3.S; 1 female, AM P.71836, 19°29.6'S 118°51.7'E to 19°29.9'S 118°51.0'E, 40–41 m, epibenthic sled, 25 October 1983, stn NWS 05.D7.S; 1 male, AM P.71837, 19°04.1'S 118°47.8'E to 19°04.7'S 118°47.2'E, 82 m, beam trawl, 23 October 1983, stn NWS 05.B10.BT. <b>Diagnostic description.</b> <i>Head</i> lateral cephalic lobe subtriangular, apically rounded; eyes (fading in alcohol), large, subtriangular with ventral concave lens. <i>Antenna 1</i> flagellum with strong 2-field callynophore, robust setae absent from proximal articles; calceoli absent. <i>Antenna 2</i> peduncular articles 4 and 5 not enlarged; flagellum short, calceoli absent. <i>Epistome/Upper lip</i> epistome less produced than upper lip, straight. <i>Mandible</i> molar with asymmetrically reduced column, proximally setose, distally triturating. <i>Maxilla 1</i> 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. <i>Gnathopod 1</i> subchelate; coxa large (length 1.9 x breadth), subrectangular, distally subovate; basis moderately setose along anterior margin; ischium short (length 1.6 x breadth); carpus long (length 2 x breadth), shorter than propodus, without posterior lobe; propodus margins subparallel, palm moderately acute. <i>Gnathopod 2</i> propodus palm moderately obtuse. <b> <i>Pereopod 4</i> coxa without distinct lateral ridge</b> . <b> <i>Pereopod 5</i> coxa with distinct lateral ridge</b> ; basis about as long as broad, with photophore. <i>Epimeron 3</i> posterior margin smooth, posteroventral corner broadly rounded. <i>Uropod 3</i> outer ramus article 2 short, with plumose setae on both rami. <i>Telson</i> deeply cleft, with dorsal robust setae, with 2 to 3 apical robust setae on each lobe. <b>Male</b> (sexually dimorphic characters). <i>Antennae 1 and 2</i> calceoli present. <i>Antenna 2</i> peduncular articles 4 and 5 enlarged. <b>Remarks.</b> When Pirlot first described this species he recognised its similarity to the species now known as <i>Photosella miersi</i> but noted the lack of a ridge on coxa 5 of Stebbing's species. <i>Photosella mucronata</i> differs from <i>P. miersi</i> in having a ridge on the coxa of pereopod 5. In Australia it is currently known only from the North West Shelf of Western Australia. <b>Distribution.</b> Eastern Indonesia and north-western Australia, 39–141 m depth.
description: Published as part of <i>Lowry, J. K. &amp; Stoddart, H. E., 2011, The tryphosine genera Photosella gen. nov. and Tryphosella Bonnier, 1893 (Crustacea: Amphipoda: Lysianassoidea: Lysianassidae: Tryphosinae) in Australian waters 2956, pp. 1-76 in Zootaxa 2956 (1)</i> on page 12, DOI: 10.11646/zootaxa.2956.1.1, http://zenodo.org/record/5281859
description: {"references": ["Pirlot, J. M. (1936) Les amphipodes de l'expedition du Siboga. Deuxicme 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.", "Barnard, J. L. (1958) Index to the families, genera, and species of the gammaridean Amphipoda (Crustacea). Allan Hancock Foundation Publications, Occasional Paper, 19, 1 - 145.", "Barnard, J. L. (1962) South Atlantic abyssal amphipods collected by R. V. Vema. Abyssal Crustacea. Vema Research Series, 1, 1 - 78.", "* Barnard, J. L. &amp; Karaman, G. S. (1991) The families and genera of marine gammaridean Amphipoda (except marine gammaroids). Records of the Australian Museum, Supplement, 13 (1 &amp; 2), 1 - 866."]}