Australian Amphipoda: Eusiridae

J.K. Lowry, P.B Berents & R.T. Springthorpe

Schraderia serraticauda Stebbing

Atyloides serraticauda. Stebbing, 1888: 920, pl. 78. --Stebbing, 1910: 362. --1910: 640.

Schraderia serraticauda. --K.H. Barnard, 1932: 204.

not Atyoides serraticauda. --Walker, 1903: 58, pl. 11, fig. 90 (= S. gracilis Pfeffer, 1888). --Chevreux, 1906: 87 (= S. gracilis Pfeffer, 1888). --Walker, 1907: 33 (= S. gracilis Pfeffer, 1888). --Chevreux, 1913: 179 (= S. gracilis Pfeffer, 1888). Chilton, 1921a: 224 (part = S. gracilis Pfeffer, 1888)

not Paramoera serraticauda. --Walker, 1903: 204 (? = S. gracilis Pfeffer, 1888). --Chilton, 1912: 497 (?= S. gracilis Pfeffer, 1888). --Monod, 1926 (= S. gracilis Pfeffer, 1888). --K.H. Barnard, 1930: 388 (= S. gracilis Pfeffer, 1888).

not Paramoera calceolata. --Chilton, 1912: 497, pl. 2, figs 21-23 (?= S. gracilis Pfeffer, 1888).

Type material. SYNTYPES: 2 speciemsns, BMNH

Type locality. Off Melbourne, Victoria (38º22´30˜S 144º36´30˜E) (Challenger Station 161).

Description. Based on Stebbing, 1888: 920, pl. 78. Head rostrum present, long; eyes present, eyes reniform. Body dorsally smooth. Antenna 1 longer than antenna 2; accessory flagellum present or absent, accessory flagellum minute. Mandible molar columnar, triturative. Lower lip inner lobes absent; outer lobes with narrow gap. Maxilla 1 inner plate apically setose. Maxilla 2 inner plate subequal or slightly broader than outer; inner plate with slender medial setae, without oblique row of slender setae.

Peraeon. Gnathopod 1 subchelate; subequal to gnathopod 2; coxa weakly or not produced anteroventrally; carpus not cantilevered, shorter than propodus, without a lobe; propodus without robust setae along posterior margin (adults); dactylus narrowing distally, apically acute or subacute. Gnathopod 2 not sexually dimorphic. Gnathopod 2 subchelate; carpus not cantilevered, posterodistally lobed, shorter than propodus; propodus without robust setae along posterior margin (adults); dactylus narrowing distally, apically acute or subacute. Peraeopods 3-4 propodus simple, with distal slender setae. Peraeopods 5-7 dactyli inner margins smooth or minutely castellate.

Pleon. Pleonites neither tricarinate. Epimeron 3 posteroventral margin smooth, corner acutely produced. Uropod 1 outer ramus shorter than inner (slightly). Uropod 3 peduncle without dorsal robust setae; rami subequal in length. Telson cleft, without large apical robust setae.

Habitat. Marine; sand bottom.

Depth zones. Continental shelf (about 70 m).

Distribution. Victoria: off Melbourne (Stebbing, 1888).

Geographic areas. South-eastern Australia.

Cite this publication as: 'J.K. Lowry, P.B Berents & R.T. Springthorpe (2000 onwards). Australian Amphipoda: Eusiridae. Version: 2 October 2000.'.