Macrourus holotrachys Gunther 1878

• Main Authors: Mcmillan, Peter, Iwamoto, Tomio, Stewart, Andrew, Smith, Peter J
• Format: Other/Unknown Material
• Language: unknown
• Published: Zenodo 2012
• Subjects: Biodiversity; Taxonomy; Animalia; Chordata; Actinopterygii; Gadiformes; Macrouridae; Macrourus; Macrourus holotrachys; Antarc*; Antarctic
• Online Access: https://doi.org/10.5281/zenodo.5628298; http://treatment.plazi.org/id/03FF87A08833FFA894ED561E8CB6EDEA

Macrourus holotrachys Günther 1878 Macrurus holotrachys Günther, 1878: 24. Holotype BMNH 1887.12.7.87, East of Rio de la Plata mouth, Challenger station 320, 600 fathoms [1097 m]. Günther, 1887: 136, Pl. 26 (redescribed, illustrated). Macrourus holotrachys —Trunov, 1986: 22, 29–31 (described, in Russian, English summary). Trunov & Konstantinov, 1986: 125–135 (described, illustrated, compared with M. carinatus , in Russian, English summary). Trunov & Konstantinov, 1990: 44–54 (described, illustrated, key, in Russian, English summary). Iwamoto in Cohen et al. , 1990: 233–240 (described, illustrated, key). Iwamoto in Gon & Heemstra, 1990: 192, 202–206 (described, illustrated, key). Diagnosis. Ventral surface of the head entirely or mostly scaleless but up to 8 small patches of scales (usually less than about 10 small scales per patch) may be present at the posterior end of head, beside articulation of lower jaw and beside posterior end of premaxilla, and rarely posteriorly on lower jaw. Pelvic fin with 8 or 9 rays (rarely 10). Lower jaw with 2–5 rows of small uniform-sized teeth reducing to 1 or 2 rows posteriorly. Upper jaw with 4–6 rows of small, uniform-sized teeth. Body scales large, thick, adherent, with a central row of strong spinules, 18–26 scales in a diagonal row from anal fin origin to lateral line. Pyloric caeca 9–16. Specimens examined. Holotype. BMNH 1887.12.7.87 (50 mm HL, 220 mm TL), south east Atlantic Ocean east of Rio de la Plata, 37° 17' S, 53° 52' W, 600 fm (1097 m), Challenger stn. 320, 14 Feb 1876. Non-type specimens (29, all taken by bottom longline). NMNZ P.036987 (143 mm HL, 640 mm TL), South Georgia, 54º 0' S, 39º 0' W, 1300–2000 m, Apr 1997; NMNZ P.038550 (153 mm HL, 681 mm TL), NMNZ P.038555 (185 mm HL, 802 mm TL), Pacific-Antarctic Ridge, 64º 6' S, 177º 20' E, 1508–1543 m, FV Jana s, Obs 1593b/226, 23 May 2002; NMNZ P.038556 (186 mm HL, 761+ mm TL), Pacific-Antarctic Ridge, 63º 16' S, 176º 7' E, 1195– 1404 m, FV San Aotea II , Obs 1595b/168b, 0 3 May 2002; NMNZ P.038572 (2, ...