Schisturella spinirama, Hendrycks & Conlan, 2003

Hendrycks, EA & Conlan, KE, 2003, New and unusual abyssal gammaridean Amphipoda from the north-east Pacific, Journal of Natural History 37, pp. 2303-2368 : 2329-2330

Schisturella spinirama sp. nov. (figures 11, 12)

Type material

H  : adult W, 9 mm, (appendages on one slide), CMNC 2002-0037 , Sta. 327, Cup# A, 34°47.18∞N, 123°04.18∞W, 4050 m, 26 February 1990 .

Diagnosis

Eye absent; lateral cephalic lobe subacute; coxa 1 short, length 0.5×coxa 2, anterior margin straight, anteroventral corner narrowly rounded; gnathopod 1, carpus longer than propodus, propodus with weakly oblique palm; coxa 4, posteroventral lobe narrowly rounded; epimeron 3, posteroventral corner rounded; uropods 1–2, peduncles and rami strongly spinose; uropod 2, inner ramus, spine at distal constriction short, about 0.5×length of ramus distal to notch; telson, not tapering distally, lobes broad, cleft 51%.

Description

H  , adult male, CMNC 2002-0037.

Head: eye absent; rostrum short, rounded; midcephalic margin of head slightly concave; lateral cephalic lobe subacute. Antenna 1: length about one-quarter body, callynophore strong, length 1.2×peduncular articles 1–3, densely furnished with aesthetascs medially; accessory flagellum five-articulate, article 1 length 2.4×remaining articles, primary flagellum 12-articulate, calceoli present. Antenna 2: length about three-quarters body, peduncular articles 3–5 with brush setae, peduncular article 5 longer than 4; flagellum about 50-articulate, calceoli present.