Sophrosynidae, a new family in the Lysianassoidea (Crustacea: Amphipoda) with a revision of the genus Sophrosyne Author Lowry, J. K. Author Stoddart, H. E. text Zootaxa 2010 2010-02-25 2370 1 1 35 https://biotaxa.org/Zootaxa/article/view/zootaxa.2370.1.1 journal article 10.11646/zootaxa.2370.1.1 1175-5326 5306939 Sophrosyne rodondo sp. nov. ( Figs 17 , 18 ) Type material . 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 Tangaroa , 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 Tangaroa , 13 November 1981 , cruise 81- T-1 (stn BSS-156) . Type locality. 66 km south of Rodondo Island , central Bass Strait , Australia ( 39°48.6'S 146°18.8'E ), 82 m . Etymology . The specific name refers to the type locality. Diagnostic description . Head lateral cephalic lobe small, narrowly rounded; eyes round. Antenna 1 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. Antenna 2 peduncular article 3 0.6 x article 4; flagellum 6-articulate. Mandible incisors with slightly convex margins; palp article 2 slender, 1 x article 3, with 1 submarginal posterodistal A2-seta , without D2-setae , article 3 length 5.5 x breadth, without D3-setae , with 4 apical E3-setae. Maxilla 1 outer plate with setal-teeth in a 2/5 arrangement . Maxilla 2 inner plate narrow, outer plate broader; inner plate length 0.65 x outer plate. Maxilliped inner plate subrectangular, without apical nodular robust setae; outer plate submarginal setae long, simple; palp article 2 slender , length 2.3 x breadth, 1.1 x article 3, article 3 slender, length 2.4 x breadth, dactylus with unguis present. Gnathopod 1 basis length 1.8 x breadth, anterior margin with slender setae ; 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, palm margin straight , posterodistal corner with produced subacute spine bearing vestigial seta . Gnathopod 2 minutely subchelate ; ischium length 3.4 x breadth; carpus long, length 3.7 x breadth, posterior margin straight; propodus subrectangular, long, length 2.2 x breadth; palm slightly acute, with convex margin , with minute robust setae. Pereopod 3 merus weakly expanded anteriorly. Pereopod 4 merus weakly expanded anteriorly. Pereopod 5 basis greatly expanded posteriorly; merus moderately expanded posteriorly. Pereopod 6 coxa small, slightly lobate posteriorly; merus expanded posteriorly. Pereopod 7 basis posterior margin slightly rounded, minutely crenate, posteroventral margin rounded, posteroventral lobe extending beyond ischium ; merus not expanded posteriorly; propodus with setae along anterior margin. Epimeron 3 posterior margin with strong upturned spine above subquadrate posteroventral corner . Urosomite 1 with anterodorsal notch and rounded boss , with lateral flange. Uropod 1 rami subequal in length; outer ramus with 1 dorsal robust seta; inner ramus without dorsal robust setae. Uropod 2 rami subequal in length; rami without robust setae. Uropod 3 peduncle length 1.1 x breadth; rami subequal in length. Telson longer than broad, length 1.1 x breadth, moderately cleft (38%), distal margins rounded, with 1 apical slender setae on each lobe. Remarks . Sophrosyne rodondo appears to be most similar to S. hispana . 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. Distribution . Bass Strait, Australia in 74–82 m depth.