Stegocephalopsis mamillidacta Moore 1992

• Main Author: Vader, Berge Wim
• Format: Other/Unknown Material
• Language: unknown
• Published: 2001
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Malacostraca; Amphipoda; Stegocephalidae; Stegocephalopsis; Stegocephalopsis mamillidacta; Amchitka; Banjo Point; Bering Sea; Alaska
• Online Access: https://zenodo.org/record/5279334; https://doi.org/10.5281/zenodo.5279334

Stegocephalopsis mamillidacta Moore, 1992 (Figure 1, a) Stegocephalopsis mamillidacta Moore, 1992. Material examined. Type material: Cat. NMCC1990-0366, PARATYPE 3 mm immature, Amchitka Isl., Alaska, oOE Banjo Point (Bering Sea), 100 m, 14 September 1971. Distribution. [274] known only from the type locality (see above). Short description, based entirely on the paratype, to supplement Moore’s (1992) original description: epistome curved (unproduced); epistomal plate absent. Maxilla 2 outer plate setae with hooks distally. Epimeral plate 3`hip-shaped’ (see Barnard and Karaman, 1991: 682), with serrations on posterior margin. Uropod 3 outer ramus longer than inner. Urosome articulation between articles 2 and 3 absent. Telson longer than uropod 3 peduncle. Remarks. The present species has hooked setae on maxilla 2 (see above), and the articulation between urosome segments 2 and 3 is absent, contrary to Moore’s original description. Otherwise, no major discrepancies with Moore’s description were detected during examination of the paratype. See also remarks under S. ampulla. Published as part of Vader, Berge Wim, 2001, North Paci ® c species of the amphipod (Crustacea) family Stegocephalidae, with description of one new species and redescription of another, pp. 985-1000 in Journal of Natural History 35 on pages 994-995