Sophrosyne rodondo 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 rodondo

description: <i>Sophrosyne rodondo</i> sp. nov. (Figs 17, 18) <b>Type material</b>. HOLOTYPE, female, 4.6 mm, MV J60734, 66 km south of Rodondo Island, central Bass Strait, Australia (39°48.6'S 146°18.8'E), 82 m, sand, silt and mud, epibenthic sled, R. Wilson, 13 November 1981, RV <i>Tangaroa</i>, cruise 81- T-1 (stn BSS-158S). PARATYPES: female, AM P.46681, same data; female, MV J 60735, 100 km south-south-east of Cape Liptrap, central Bass Strait, Australia (39°45.9'S 145°33.5'E), 74 m, muddy fine sand, epibenthic sled, R. Wilson on RV <i>Tangaroa</i>, 13 November 1981, cruise 81- T-1 (stn BSS-156). <b>Type locality.</b> 66 km south of Rodondo Island, central Bass Strait, Australia (39°48.6'S 146°18.8'E), 82 m. <b>Etymology</b>. The specific name refers to the type locality. <b>Diagnostic description</b>. <i>Head</i> lateral cephalic lobe small, narrowly rounded; eyes round. <i>Antenna 1</i> peduncular article 1 short, length 1.2 x breadth; accessory flagellum medium length, 0.46 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 6-articulate. <i>Mandible</i> incisors with slightly convex margins; <b>palp article 2</b> slender, 1 x article 3, <b>with 1 submarginal posterodistal A2-seta</b>, <b>without D2-setae</b>, <b>article 3 length</b> 5.5 x breadth, <b>without D3-setae</b>, with 4 apical E3-setae. <b> <i>Maxilla 1</i> outer plate with setal-teeth in a 2/5 arrangement</b> . <i>Maxilla 2</i> inner plate narrow, outer plate broader; inner plate length 0.65 x outer plate. <i>Maxilliped</i> inner plate subrectangular, without apical nodular robust setae; outer plate submarginal setae long, simple; <b>palp article 2 slender</b>, length 2.3 x breadth, 1.1 x article 3, article 3 slender, length 2.4 x breadth, dactylus with unguis present. <b> <i>Gnathopod 1</i> basis</b> length 1.8 x breadth, <b>anterior margin with slender setae</b>; ischium length 1 x breadth; merus, posterior margin lined with long slender setae; carpus length 0.45 x propodus; propodus length 1.9 x breadth, posterior margin slightly concave, with robust setae and simple, slender setae, <b>palm margin straight</b>, <b>posterodistal corner with produced subacute spine bearing vestigial seta</b>. <b> <i>Gnathopod 2</i> minutely subchelate</b> ; ischium length 3.4 x breadth; carpus long, length 3.7 x breadth, posterior margin straight; propodus subrectangular, long, length 2.2 x breadth; <b>palm</b> slightly acute, <b>with convex margin</b>, with minute robust setae. <i>Pereopod 3</i> merus weakly expanded anteriorly. <i>Pereopod 4</i> merus weakly expanded anteriorly. <i>Pereopod 5</i> basis greatly expanded posteriorly; merus moderately expanded posteriorly. <i>Pereopod 6</i> coxa small, slightly lobate posteriorly; merus expanded posteriorly. <b> <i>Pereopod 7</i> basis</b> posterior margin slightly rounded, minutely crenate, posteroventral margin rounded, <b>posteroventral lobe extending beyond ischium</b>; merus not expanded posteriorly; propodus with setae along anterior margin. <b> <i>Epimeron 3</i> posterior margin with strong upturned spine above subquadrate posteroventral corner</b> . <b> <i>Urosomite 1</i> with anterodorsal notch and rounded boss</b> , with lateral flange. <i>Uropod 1</i> rami subequal in length; 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 1.1 x breadth; rami subequal in length. <i>Telson</i> longer than broad, length 1.1 x breadth, moderately cleft (38%), distal margins rounded, with 1 apical slender setae on each lobe. <b>Remarks</b>. <i>Sophrosyne rodondo</i> appears to be most similar to <i>S. hispana</i>. Both have the posteroventral lobe on the basis of pereopod 7 extending beyond the ischium and a curved posteroventral corner with strong upturned tooth on epimeron 3. They differ most noticeably in the shape of the basis of pereopods 5 and 6. <b>Distribution</b>. Bass Strait, Australia in 74–82 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 29-30, DOI: 10.11646/zootaxa.2370.1.1, http://zenodo.org/record/5306939