Leitoscoloplos abranchiatus Hartman 1967

• Main Author: Blake, James A.
• Format: Other/Unknown Material
• Language: unknown
• Published: 2017
• Subjects: Biodiversity; Taxonomy; Animalia; Annelida; Polychaeta; Orbiniidae; Leitoscoloplos; Leitoscoloplos abranchiatus; Weddell Sea; Drake Passage; Scotia Sea; South Shetland Islands; Pacific; Weddell; South Orkney Islands; Menzies; Cape Horn; Noto; West Scotia Basin; Antarc*; Antarctica; Tierra del Fuego
• Online Access: https://zenodo.org/record/4901743; https://doi.org/10.5281/zenodo.4901743

Leitoscoloplos abranchiatus (Hartman, 1967) Figure 6 A–C Haploscoloplos abranchiatus Hartman, 1967: 103 –104; Rozbaczylo 1985: 129. Haploscoloplos sp. Hartman 1978: 156 (in part, Sta. 69-21). Leitoscoloplos abranchiatus: Mackie 1987: 720. Material examined: Scotia Sea, West Scotia Basin, Falkland Islands, Eltanin Sta. 6-350, 2452m, Menzies trawl (3, USNM 56455). —off Cape Horn, Eltanin Sta. 4-112, 20 Jul 1962, 55.52°S, 61.92°W, 4008 m, holotype and 7 paratypes, (USNM 55531–2). —off Tierra del Fuego, R/V Vema Sta. V- 17-56, 4006 m, (1, LACM-AHF Poly 5010) — South Shetland Islands, Eltanin Sta. 4-138, 1437 m (3, USNM 56454).—off South Georgia, Eltanin Sta. 9- 711, 2983– 3331 m (1, USNM 60630).—Drake Passage, Eltanin Sta. 9-740, 384– 494 m (1, USNM 61944).— South Orkney Islands, Eltanin Sta. 6-1082, 298 – 302 m (1, USNM 60631).— Weddell Sea, Antarctica, Glacier Sta. 69 - 21, 2288 m (1, USNM 61945). — Weddell Sea, ANDEEP III ANT XXII- 3, R/ V Polarstern, Sta. PS-67/078 - 6, 2168 m (1, SEM, JAB); Weddell Sea, abyssal plain, ANDEEP SYSTCO ANT XXIV-2, R/V Polarstern, Sta. 33- 14, 5338 m, 6 specimens (ZMH P-27794).— South Pacific Ocean, Albatross Cordillera, Eltanin Sta. 14-1250, 3638 – 3825 m (2, USNM 60632). Description. A small species, up to 18 mm long, 1.0 mm wide for about 30 setigerous segments. Prostomium conical, narrowly rounded on anterior margin (Fig. 6 A); peristomium deeply folded, with 2–3 superficial annuli. Thoracic region with 9–13 setigers. Thoracic parapodia with short, conical noto- and neuropodial postsetal lobes. Abdominal parapodia only weakly elevated dorsally; with short, fingerlike notopodial postsetal lobes; neuropodia flattened, prolonged, rectangular in shape, distally entire (Fig. 6 B). Thoracic parapodia with fascicles of long crenulated capillaries; abdominal notopodia with capillaries and 1–2 furcate setae, each with unequal tynes connected by row of thin needles (Fig. 6 C). Branchiae entirely absent. Pygidium unknown. Remarks. This species was well described by Hartman (1967) and is ...