Sophrosyne integricauda Lowry &amp; Stoddart 2010, sp. nov.
Creators: name: Lowry, J. K.
name: Stoddart, H. E.
Publisher: name: Zenodo
Year: 2010
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Malacostraca
Amphipoda
Sophrosynidae
Sophrosyne
Sophrosyne integricauda

description: <i>Sophrosyne integricauda</i> sp. nov. (Figs 8, 9) <b>Type material</b>. HOLOTYPE, female, 3.2 mm, MV J60739, 44 km north-east of Cape Wickham, King Island, central Bass Strait, Australia (39°22.0'S 144°18.3'E), 60 m, coarse sand, grab, R. Wilson on RV <i>Tangaroa</i>, 23 November 1981, cruise 81- T-1 (stn BSS-203). PARATYPES: female, 3.4 mm, AM P.46682, same data;?female, 2.4 mm, male, 2.7 mm, MV J7447, 25 km west-south-west of Cape Otway, western Bass Strait, Australia (38°55'S 143°25'E), 67 m, coarse sand, G.C.B. Poore on HMAS <i>Kimbla</i>, 8 October 1980, cruise 80- K-1 (stn BSS-53). <b>Type locality.</b> 44 km north-east of Cape Wickham, King Island, central Bass Strait, Australia (39°22.0'S 144°18.3'E), 60 m. <b>Etymology</b>. The specific name refers to the entire telson of this species, an unusual character in the genus <i>Sophrosyne</i>. <b>Diagnostic description</b>. <i>Head</i> lateral cephalic lobe small, broadly rounded; eyes oval. <i>Antenna 1</i> peduncular article 1 short, length 1.4 x breadth; accessory flagellum short, 0.3 x primary flagellum, article 1 long, 3 x article 2; flagellum 6-articulate, without callynophore. <i>Antenna 2</i> peduncular article 3 0.6 x article 4; flagellum 5-articulate. <i>Mandible</i> incisors with slightly convex margins; <b>palp article 2</b> slender, 1.4 x article 3, <b>with 1 submarginal posterodistal A2-seta</b>, without D2-setae, article 3 length 4.6 x breadth, without D3- setae, with 4 apical E3-setae. <b> <i>Maxilla 1</i> outer plate with setal-teeth in a 2/0 arrangement</b> . <i>Maxilla 2</i> inner and outer plates broad. <i>Maxilliped</i> inner plate subovate, without apical nodular robust setae; outer plate submarginal setae long, simple; palp article 2 slender, length 2.5 x breadth, 1.1 x article 3, article 3 slender, length 2.8 x breadth, dactylus with unguis present. <i>Gnathopod 1</i> basis length 1.7 x breadth, anterior margin without setae; ischium length 1.1 x breadth; merus, posterior margin lined with long slender setae; carpus length 0.5 x propodus; <b>propodus</b> length 1.7 x breadth, <b>posterior margin</b> slightly concave, <b>without setae</b>, palm margin straight, <b>posterodistal corner with produced subacute spine bearing vestigial seta</b>. <i>Gnathopod 2</i> minutely subchelate; ischium length 3 x breadth; carpus long, length 3.3 x breadth, posterior margin straight; propodus subrectangular, short, length 1.8 x breadth; palm transverse, with straight margin, with minute robust setae. <i>Pereopod 3</i> merus not expanded anteriorly. <i>Pereopod 4</i> merus weakly expanded anteriorly. <i>Pereopod 5</i> basis moderately expanded posteriorly; merus broadly expanded posteriorly. <i>Pereopod 6</i> coxa small, slightly lobate posteriorly; merus expanded posteriorly. <i>Pereopod 7</i> basis posterior margin slightly rounded, minutely crenate, posteroventral margin straight, posteroventral lobe not extending beyond ischium; merus not expanded posteriorly; propodus without setae along anterior margin. <b> <i>Epimeron 3</i> posterior margin with weak spine above rounded posteroventral corner</b> . <i>Urosomite 1</i> with rounded boss, without lateral flange. <i>Uropod 1</i> outer ramus slightly longer than inner ramus; outer ramus with 1 dorsal robust seta; inner ramus without dorsal robust setae. <i>Uropod 2</i> rami subequal in length; rami without robust setae. <i>Uropod 3</i> peduncle length 0.9 x breadth; rami inner ramus shorter than. <b> <i>Telson</i> shorter than broad</b> , length 0.9 x breadth, <b>entire</b>, distal margin rounded, with 2 apical slender setae. <b>Male</b> (sexually dimorphic characters). <i>Antenna 1</i> with strong 1-field callynophore. <b>Remarks.</b> <i>Sophrosyne integricauda</i> differs from all other species of <i>Sophrosyne</i> in the very reduced tooth on the posterodistal corner of epimeron 3 and in the entire telson. <b>Distribution</b>. Bass Strait, south-eastern Australia, in 60–67 m depth.
description: Published as part of <i>Lowry, J. K. &amp; Stoddart, H. E., 2010, Sophrosynidae, a new family in the Lysianassoidea (Crustacea: Amphipoda) with a revision of the genus Sophrosyne, pp. 1-35 in Zootaxa 2370 (1)</i> on pages 14-16, DOI: 10.11646/zootaxa.2370.1.1, http://zenodo.org/record/5306939