Careproctus laperousei Chernova, Thiel & Eidus 2020, new species

• Main Authors: Chernova, Natalia, Thiel, Ralf, Eidus, Irina
• Format: Other/Unknown Material
• Language: unknown
• Published: 2020
• Subjects: Biodiversity; Taxonomy; Animalia; Chordata; Actinopterygii; Scorpaeniformes; Liparidae; Careproctus; Careproctus laperousei; Kamchatka
• Online Access: https://zenodo.org/record/4398176; https://doi.org/10.5281/zenodo.4398176

Careproctus laperousei Chernova, Thiel & Eidus, new species English name: Laperouse snailfish (Fig. 1–2; Tables 1–2) urn:lsid:zoobank.org:act: 7A8265FB-E629-4391-A273-39677385D59F Holotype: ZMH 26369, 136 mm TL, 120 mm SL, the northern slope of the Kuril-Kamchatka Trench, 46°06.502´ N, 152°14.139´ E, Agassiz trawl, depth 4803– 4796 m, 29 July 2015, R / V “ Akademik M. A. Lavrentyev ”, cruise 71, station 10–8, collector I. Eidus. The holotype is an immature female (stage of maturity II). Diagnosis. A species of Careproctus with the following combination of characters: vertebrae 57 (11+46). Pleural ribs 2 pairs. D 53, A 45, P 26, C 8 (principal rays). Hypural one, slitted. Head length 22.5 % SL, preanal length short, 31 % SL. Eye not large, 16.7 % lc, disk 37.0 % lc. Opercular flap angular, protruding. Pores 2-6-7-1. Pectoralfin length 20 % SL. Grayish-brown with a pink tint when fresh. Peritoneum black. Description. Fresh specimen. Head widely rounded, snout somewhat flattened. Greatest depth behind occiput. Caudal part of body becoming noticeably less deep at the middle of its length; translucent at the end. Skin slippery, moderately gelatinous. Body grayish-brown, with a pink tint. Black peritoneum showing through the body wall. Marginal part of the disk uncolored. Head, pectoral and unpaired fins blackish. Skin around the anus and genital opening light. Preserved specimen. Dorsal contour of the body arched; ventral contour almost straight. The body height 63 % lc, contained 7.1 times in SL. Head not large, 4.4 times in SL, but rather massive; its width (70 % lc) greater than the height (63 % lc). Dorsal contour rounded to the tip of snout. Snout gelatinous, distinctly protruding above the lower jaw, 2.2 times as large as eye. Nostril looks as a pore with a raised edge, at the level of the upper edge of eye. Eye small, less than 1/5 of head length. Mouth inferior. Lower jaw slightly shorter than the upper jaw, so the edge of maxillary dental patch is visible when looking at head from below. Oral cleft ...