Lycodapus pachysoma Peden and Anderson 1978

• Main Author: M. Eric Anderson
• Format: Other/Unknown Material
• Language: unknown
• Published: 2006
• Subjects: Biodiversity; Taxonomy; Animalia; Chordata; Actinopterygii; Perciformes; Zoarcidae; Lycodapus; Lycodapus pachysoma; Weddell Sea; Scotia Sea; Weddell; Lazarev; Lazarev Sea; Maud Rise; Orcadas
• Online Access: https://zenodo.org/record/6258159; https://doi.org/10.5281/zenodo.6258159

Lycodapus pachysoma Peden and Anderson, 1978 Lycodapus pachysoma Peden and Anderson, 1978: 1944, figs. 5, 9, 16 (type locality: off Oregon, USA); Anderson, 1988: 106, fig. 41; Anderson, 1990b: 266, fig. 12; Trunov, 1999: 492; Mecklenburg et al., 2002: 735, text fig. Material examined. Scotia Sea: USNM 356649 (1 specimen; 197 mm SL), off Candelmas Isl., 56°58.7'S, 26°30.6'W, 1681-1655 m, ISLAS ORCADAS coll. UMO 37, 10 ft beam trawl, 22 May 1975, H. H. DeWitt.Weddell Sea: MNHN 1990-646 (1; 102 mm SL); Halley Bay, 74°30.0'S, 29°20.0'W, 0-1223 m, POLARSTERN sta. 252, Agassiz beam trawl, 6 Feb. 1989, W. Arntz.South Shetland Islands: MCZ 123478 (1; 191 mm SL), 62°17'S, 57°26'W, 0-1000 m (bottom depth 1975-1998 m), POLAR DUKE sta. KEH94- RMT31, midwater trawl, 8 Nov. 1994, K. E. Hartel.MCZ 126859 (1; 52 mm SL), 62°17'S, 57°50'W, 0-1000 m (bottom depth 1978-1986 m), POLAR DUKE sta. KEH94-RMT30, midwater trawl, 8 Nov. 1994, K. E. Hartel. Diagnosis. Lycodapus pachysoma is distinguished from its congeners by the following combination of characters: vertebrae 16-18 + 59-65 = 75-82; gill raker ratio as percent 50-88; adults with relatively robust bodies and long heads. Description. Complete descriptions found in Peden and Anderson (1978) and Anderson (1988). Vertebrae 17-18 + 60-62 = 77-80; D 70-72; A 61-62; P 7-8; C 9; pelvics absent; branchiostegal rays 6; gill rakers 13 + 11-12 = 12-15; vomerine teeth 3-17; palatine teeth 7-17; pseudobranch filaments 1-3; pyloric caeca 2; preopercular pores 4; mandibular pores 4; interorbital pore 1. Following proportions as percent SL: head length 20.1-22.2; head width 8.3-9.1; head depth 11.7-12.6; predorsal length 24.1-26.2; preanal length 40.9-42.8; body depth 7.1-8.6. Following proportions as percent HL: upper jaw length 50.2-51.6; eye diameter 12.1-15.9 (21.9 in 52 mm juvenile); snout length 35.3-37.9; pectoral-fin length 19.6-23.8. Gill raker ratio 59-65%. Remarks. Trunov (1999) reported this species from the Maud Rise, Lazarev Sea. Published as part of M. Eric Anderson, 2006, ...