Sophrosyne hispana ( Chevreux, 1887 )

Lowry, J. K. & Stoddart, H. E., 2010, Sophrosynidae, a new family in the Lysianassoidea (Crustacea: Amphipoda) with a revision of the genus Sophrosyne, Zootaxa 2370 (1), pp. 1-35 : 13-14

Sophrosyne hispana ( Chevreux, 1887)

( Figs 6 , 7 )

Opis hispana Chevreux, 1887: 567 .

Opisa hispana . — Stebbing, 1888: 1641. — Della Valle, 1893: 807.

Paropisa hispana . — Stebbing, 1899: 206.

Sophrosyne hispana . — Chevreux, 1900: 13, pl. 3 fig. 1. — Stebbing, 1906: 22, 717. —J.L. Barnard, 1958: 99. — Belloc, 1960: 2. — Barnard & Karaman, 1991: 533. — Kilgallen et al., 2007: 1245, fig. 2 (at least in part).

not Sophrosyne hispana . — Ruffo, 1975: 446 (= S. ruffoi ).

not Sophrosyne hispana . — Ledoyer, 1977: 389, fig. 23 (= S. ledoyeri ).

Citations which cannot be confidently placed and might represent more than one species:

Sophrosyne hispana . — Diviacco & Ruffo, 1989: 550, figs 376, 377 (in part, part = S. ledoyeri and S. ruffoi ). —Dauvin & Sorbe, 1995: 456 (Appendix). —Bellan-Santini, 1998: 875 (table 3). — Bellan-Santini & Ruffo, 1998: 900 (table 7). — Dauvin & Bellan-Santini, 2002: 317 (table 1). — Cartes et al., 2003: 748 (table 1). — Kilgallen et al., 2007: 1245, fig. 2 (in part).

Material examined. HOLOTYPE, sex not known, 2 mm, MOM (as 6 microscope slides), off Cape Finisterre , Spain, north-eastern Atlantic Ocean (43°12'50"N 11°53'30"W to 43°12'15"N 11°52'W), mud, trawl, 363–510 m, 24 August 1886 (Hirondelle stn 66).

Type locality. Off Cape Finisterre , Spain, north-eastern Atlantic Ocean (43°12'50"N 11°53'30"W to 4312'15"N 11°52'W), 363–510 m.

Diagnostic description. Head lateral cephalic lobe small, narrowly rounded; eyes apparently absent. Antenna 1 peduncular article 1 short, length 1.2 x breadth; accessory flagellum medium length, 0.4 x primary flagellum, article 1 short, 1.5 x article 2; flagellum 4-articulate, without callynophore. Antenna 2 peduncular article 3 0.4 x article 4; flagellum 5-articulate. Mandible incisors with straight margins; palp article 2 slender, 1.4 x article 3, without A2-setae, without D2-setae, article 3 length 4.7 x breadth, without D3-setae, with 4 apical E3-setae. Maxilla 1 outer plate with setal-teeth in a 2/2 arrangement. Maxilla 2 inner plate narrow, outer plate broader; inner plate length 1 x outer plate. Maxilliped inner plate subrectangular, without apical nodular robust setae; outer plate submarginal setae long, simple; palp article 2 broad, length 1.4 x breadth, 1.1 x article 3, article 3 broad, length 2 x breadth, dactylus with unguis present. Gnathopod 1 basis length 2.1 x breadth, anterior margin without setae; ischium length 1 x breadth; merus, posterior margin lined with long slender setae; carpus length 0.5 x propodus; propodus length 1.5 x breadth, posterior margin slightly concave, without setae, palm margin straight, posterodistal corner with produced subacute spine bearing vestigial seta. Gnathopod 2 minutely subchelate; ischium length 2.5 x breadth; carpus long, length 3 x breadth, posterior margin straight; propodus subrectangular, long, length 2.7 x breadth; palm acute, with convex margin. Pereopod 3 merus weakly expanded anteriorly. Pereopod 4 merus weakly expanded anteriorly. Pereopod 5 basis moderately expanded posteriorly; merus slightly expanded posteriorly. Pereopod 6 coxa small, strongly lobate posteriorly; merus slightly expanded posteriorly. Pereopod 7 basis posterior margin almost straight, smooth, posteroventral margin rounded, posteroventral lobe 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 dorsally smooth, without lateral flange. Uropod 1 outer ramus slightly longer than inner ramus; rami without robust setae. Uropod 2 rami subequal in length; rami without robust setae. Uropod 3 [peduncle unknown]; rami subequal in length. Telson longer than broad, length 1.2 x breadth, moderately cleft (45%), distal margins rounded, with 2 apical slender setae on each lobe.

Remarks. Sophrosyne hispana shares with S. rodondo a vestigial seta on the posterodistal corner of the propodus of gnathopod 1, the posteroventral lobe on the basis of pereopod 7 extending beyond the ischium, a curved posteroventral corner with strong upturned tooth on epimeron 3, and a moderately cleft telson. Sophrosyne hispana differs from S. rodondo most noticeably in the shape of the basis of pereopods 5 and 6.

Distribution. Off Cape Finesterre, Spain, eastern North Atlantic Ocean in 363–510 m depth [possibly Bay of Biscay in 346–687 m; possibly Mediterranean Sea]

Figures

FIGURE 6. Sophrosyne hispana Chevreux, holotype, 2 mm, MOM, off Cape Finisterre, Spain. Scale for MX2 represents 0.05 mm, remainder represent 0.1 mm.

FIGURE 7. Sophrosyne hispana Chevreux, holotype, 2 mm, MOM, off Cape Finisterre, Spain. Scales represent 0.2 mm.