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 moorei sp. nov. Sophrosyne robertsoni . — Moore, 1983: 103 , figs 1-3. — Kilgallen et al ., 2007:1243 (in part). Type material . HOLOTYPE , male, 4 mm , BMNH 1982.249:1, Camas Nathais , Lynne of Lome , Scotland ( 56°28.5'N 5°27'W ), from stomach of whiting, Merlangius merlangus Linnaeus , 22–31 m over a soft mud bottom between rocky headlands, R. Gibson , August 1976 [material of Moore (1983) ]. Type locality. Camas Nathais , Lynne of Lome , Scotland ( 56°28.5'N 5°27'W ) . Etymology . Named for Dr P.G. Moore, who first made known this material. Diagnostic description . Head lateral cephalic lobe small, broadly rounded; eyes apparently absent. Antenna 1 peduncular article 1 medium length, length 1.6 x breadth; accessory flagellum medium length, 0.45 x primary flagellum, article 1 long, 2.3 x article 2; flagellum 6-articulate, with strong 1-field callynophore. Antenna 2 peduncular article 3 0.3 x article 4; flagellum 7-articulate. Mandible incisors with straight margins; palp article 2 slender, 1 x article 3, with 4 submarginal posterodistal A2-setae , without D2-setae, article 3 length 8 x breadth, with 5 D3-setae along most of posterior margin , and 3 apical E3-setae. Maxilla 1 outer plate with setal-teeth in a 2/0 arrangement . Maxilla 2 inner and outer plates broad; inner plate length 0.6 x outer plate. Maxilliped inner plate subovate, without apical nodular robust setae; outer plate submarginal setae short, simple; palp article 2 slender, length 2.4 x breadth, 1 x article 3, article 3 slender, length 2.8 x breadth, dactylus with unguis absent. Gnathopod 1 basis length 1.8 x breadth, anterior margin with slender setae ; ischium length 1.4 x breadth; merus, posterior margin with a few slender setae ; carpus length 0.5 x propodus; propodus length 1.7 x breadth, posterior margin slightly concave, with simple, slender setae , palm margin straight , posterodistal corner with produced subacute spine without seta . Gnathopod 2 minutely subchelate; ischium length 2.9 x breadth; carpus long, length 3.6 x breadth, posterior margin straight; propodus subrectangular, long, length 2.3 x breadth; palm acute, with convex, smooth margin. Pereopod 3 merus weakly expanded anteriorly. Pereopod 4 merus weakly expanded anteriorly. Pereopod 5 basis moderately expanded posteriorly; merus broadly expanded posteriorly. Pereopod 6 coxa small, slightly lobate posteriorly ; merus slightly expanded posteriorly. Pereopod 7 basis posterior margin slightly rounded, minutely crenate, posteroventral margin rounded, posteroventral lobe not extending beyond ischium ; merus not expanded posteriorly. Epimeron 3 posterior margin with strong upturned spine above subquadrate posteroventral corner . Urosomite 1 with rounded boss, without lateral flange. Uropod 1 rami subequal in length; outer ramus with 3 dorsal robust setae; inner ramus with 1 dorsal robust seta. Uropod 2 rami subequal in length; rami without robust setae. Uropod 3 peduncle length 1.4 x breadth, rami subequal in length. Telson longer than broad, length 1.3 x breadth, moderately cleft (38%), distal margins incised, with 1 apical slender setae on each lobe. Remarks . Although this material comes from the same area as the type material of S. inverarae and S. robertsoni , it has characters which do not allow it to sit easily with either of these species. It differs from S. robertsoni in having an angular posteroventral corner on epimeron 3 and only a few setae on the anterior margin of gnathopod 1 basis It differs from S. inverarae in having a broadly rounded head lobe and the telson cleft about 40%. It differs from both of these species in not having a proximal shoulder on the posterior margin of pereopod 5 basis. Sophrosyne moorei shares with S. ruffoi the absence of a robust seta on the corner of the gnathopod 1 palm, an angular posteroventral corner on epimeron 3 and a moderately cleft telson. They differ in the convex palm of gnathopod 2 (concave in S. ruffoi ) and the more strongly lobate coxa 6 in S. ruffoi . Distribution . Lynn of Lorne, Scotland .