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 ruffoi sp. nov. Sophrosyne hispana . — Ruffo, 1975: 446 . — Diviacco & Ruffo, 1989: 550 (in part), figs. 376, 377. Type material . HOLOTYPE , female, 4 mm , MVRCr 1353-1357, Secca Lo Bianco , Gulf of Naples , Mediterranean Sea (approx. 40°45’N 14°15’E ), 180–190 m , brown algae and fine sand, 1 August 1970 , U. Schiecke (not examined, material of Ruffo (1975) as S. hispana ). Type locality. Secca Lo Bianco , Gulf of Naples , Mediterranean Sea (approx. 40°45’N 14°15’E ), 180–190 m . Etymology . The species is named for Professor Sandro Ruffo, who first made known this Mediterranean material and has contributed so much to our knowledge of Mediterranean amphipods. Diagnostic description . Head lateral cephalic lobe small, narrowly rounded; eyes apparently absent. Antenna 1 peduncular article 1 short, length 1.3 x breadth; accessory flagellum medium length, 0.47 x primary flagellum, article 1 short, 1.8 x article 2; flagellum 7-articulate, without callynophore. Antenna 2 peduncular article 3 0.5 x article 4; flagellum 7-articulate. Mandible incisors with straight margins; palp article 2 slender , 1 x article 3, without A2-setae , without D2-setae, article 3 length 5.8 x breadth, without D3-setae , with 4 apical E3-setae. Maxilla 1 outer plate with setal-teeth in a 2/0 arrangement . Maxilla 2 inner plate narrow, outer plate broader; inner plate length 0.6 x outer plate. Maxilliped inner plate subrectangular, without apical nodular robust setae; outer plate submarginal setae short, simple; palp article 2 slender, length 2.4 x breadth, 1.2 x article 3, article 3 slender, length 2.3 x breadth, dactylus with unguis absent. Gnathopod 1 basis length 1.7 x breadth, anterior margin with slender setae ; ischium length 0.9 x breadth; merus, posterior margin lined with long slender setae ; carpus length 0.5 x propodus; propodus length 1.7 x breadth, posterior margin slightly concave , with robust setae, palm margin straight , posterodistal corner with produced subacute spine without setae. Gnathopod 2 minutely subchelate; ischium length 3.4 x breadth; carpus very long , length 4.2 x breadth, posterior margin straight; propodus subrectangular, long, length 2.8 x breadth; palm transverse, with concave , smooth margin . Pereopod 3 merus weakly expanded anteriorly. Pereopod 4 merus weakly expanded anteriorly. Pereopod 5 basis moderately expanded posteriorly; merus moderately expanded posteriorly. Pereopod 6 coxa small, strongly 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; propodus without setae along anterior margin. 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; outer ramus with robust setae. Uropod 3 peduncle length 1.1 x breadth; rami subequal in length. Telson as long as broad , length 1 x breadth, moderately cleft (50%), distal margins incised, with 1 apical slender setae on each lobe. FIGURE 17. Sophrosyne rodondo sp. nov. , holotype female, 5.0 mm, MV J60734 , off Cape Naturaliste, Tasmania, Australia. Scales represent 0.1 mm. Remarks . Sophrosyne ruffoi shares with S. moorei the absence of a small seta on the posterodistal corner of the propodus of gnathopod 1, an angled posteroventral corner with strong upturned tooth on epimeron 3 and a moderately cleft telson. Sophrosyne ruffoi differs from S. moorei in having the posterior margin of the merus of gnathopod 1 lined with long slender setae and robust setae along the posterior margin of the propodus and in having the posterior lobe of coxa 6 strongly lobate. FIGURE 18. Sophrosyne rodondo sp. nov. , holotype female, 5.0 mm, MV J60734 , off Cape Naturaliste, Tasmania, Australia. Scales for U1–3 and T represent 0.1 mm, remainder represent 0.2 mm. Sophrosyne ruffoi shares with S. inverarae robust setae along the posterior margin of the propodus of gnathopod 1, gnathopod 2 minutely subchelate, the posterior lobe of coxa 6 strongly lobate, an angled posteroventral corner with strong upturned tooth on epimeron 3 and a moderately cleft telson. Sophrosyne ruffoi differs from S. inverarae in the absence of A2-, D2- and D3-setae on the mandibular palp and in the absence of a small seta on the posterodistal corner of the propodus of gnathopod 1. Distribution . Gulf of Naples, Mediterranean Sea, in 180-190 m depth.