Careproctus laperousei Chernova, Thiel & Eidus 2020, new species
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°14.1...
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Biodiversity Taxonomy Animalia Chordata Actinopterygii Scorpaeniformes Liparidae Careproctus Careproctus laperousei |
spellingShingle |
Biodiversity Taxonomy Animalia Chordata Actinopterygii Scorpaeniformes Liparidae Careproctus Careproctus laperousei Chernova, Natalia Thiel, Ralf Eidus, Irina Careproctus laperousei Chernova, Thiel & Eidus 2020, new species |
topic_facet |
Biodiversity Taxonomy Animalia Chordata Actinopterygii Scorpaeniformes Liparidae Careproctus Careproctus laperousei |
description |
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 extending to anterior rim of pupil. Teeth simple, elongated, in oblique rows; 5–6 teeth in a full row in front of jaws. Gill opening completely above the pectoral-fin base, reaching down to the upper ray; 1.7 times longer than eye diameter. Opercular flap large, angular and protrudes markedly back (as a result, head length is larger than predorsal length). Length of operculum is 2 times that of the eye. Cephalic pore pattern 2-6-7-1. Pores small, chin pores slightly brought together. Radiograph. Vertebrae 57 (precaudal 11, caudal 46). Dorsal-fin rays 53 (precaudal 9), anal-fin rays 45, anterior one before the first haemal spine. Rayless pterygiophores absent; anteriormost dorsal-fin ray inserted between neural spines 3 and 4. Pleural ribs in 2 pairs on 8th and 9th vertebrae (Fig. 2). Hypural one, slitted. C 1+4/4+0, principal rays 8; the single secondary ray sits on the dorsoposterior third of hypural. Dorsal-fin origin above the base of pectoral fin. Dorsal fin low, in anterior half of length its height does not exceed a half of the body height. Anal fin is lower than the dorsal fin. Dorsal and anal fins overlap caudal fin at about 1/5th of its length. Pectoral fin with 26 rays, subdivided in two lobes. Upper lobe long (20 % SL and 89 % lc), with 19 thin rays, reaching to anal-fin origin. Lower lobe shorter (67 % of the upper lobe length), with 7 rays, free tips of which protrude from fin membrane. There is lack of shortened rays or wider ray spacing in the transition between two pectoral lobes (clear fin notch absent). Dorsalmost pectoral-fin ray at level of infraorbital pores, symphysis of pectoral fins located below posterior margin of eye. Pelvic disk 2.2 times larger than eye, flattened; anterior lobe well defined, marginal part thin and not cartilaginous, translucent; segmented tubercles around the central part absent. Disk located immediately behind the pectoral symphysis; its posterior edge approximately below the end of the opercular lobe. The distance from chin to anterior margin of disk equal to disk length. Anus opens slightly closer to disk than to anal-fin origin. Distance from posterior margin of disk to anus larger than eye, distance from anus to anal-fin origin less than disk length. Skin thin, translucent, naked and slightly gelatinous. In alcohol, pinkish pigmentation disappears. Body and bases of unpaired fins remain light (muscles and rays show through the skin). Head, abdomen and margins of unpaired fins blackish. Peritoneum black. The oral cavity, pores, disk and anus uncolored. Distribution . The northern slope of the Kuril-Kamchatka Trench, depth 4796–4803 m. The Laperouse snailfish was collected at the greatest depths of all species of Careproctus in the North Pacific. Environmental conditions . Bottom sediments in the box-corer sample at the place of capture included an upper layer of thin gray silt, dense greenish silt and coarse-grained black sand. The ground from the Agassiz trawl included greenish clayey silt interspersed with dense clay. The bycatch was dominated by the holothurian Peniagone sp., Sea feather Umbelulla sp., Scleractinia , sea anemones, sipunculids, polychaetes Travisia sp. and three types of Echiura. Etymology. The species is named after the French Naval officer and seafarer J.F. Laperouse (Chevalier JeanFrançois de Galaup, comte de La Pérouse) (1741— ca. 1788), who made a geographical expedition to the Pacific Ocean and discovered the Bussol Strait in 1787. Comparative notes . A characteristic disk with muscle reduction has been described for species of the genus Osteodiscus Stein (Fig. 3). One of the representatives, O. andriashevi Pitruk & Fedorov, is known from the Sea of Okhotsk (depth 1745–1950 m) (Pitruk & Fedorov 1990). Our specimen is assigned to the genus Careproctus , since it differs from Osteodiscus by lesser disk reduction (in Osteodiscus the musculature and cartilaginous margin of the disk are absent, pelvic rays are covered by transparent skin). Other differences include the presence of 2 pairs of pleural ribs (absent in Osteodiscus ), the structure of the hypural plate (unslitted and fused with the ural center in the latter), and also not a whip-like posterior part of the body. Careproctus laperousei clearly differs from most of deep-water congeners of the North Pacific ( C. bathycoetus , C. batialis , C. cypselurus , С. lycopersicus , C. surugaensis and C. notosaikaiensis Kai, Ikeguchi & Nakabo) in the presence of one or more significantly different characters (vertebrae or fin rays counts, head or disk size, pore pattern, teeth shape, color patterns) (Jordan & Gilbert in Jordan & Evermann 1898; Gilbert & Burke 1912 a; Popov 1933; Kido 1983, 1988; Kai et al . 2011; Orr 2012; Murasaki et al . 2017). By a combination of counts (vertebrae 57, P 26, C principal 8, pores 2-6-7-1), the new species is similar to the following congeners of the North Pacific: C. zachirus Kido, C. cyclocephalus , С. longifilis Garman, С. melanuroi-des Schmidt (Garman 1892; Schmidt 1950; Kido 1983, 1985). Careproctus laperousei differs from C. zachirus and C. сyclocephalus in having a black peritoneum (pale in the both) and shorter head (22.5 % SL vs. 25.7–29.9 and 25.7–27.7 % SL). The new species differs from С. longifilis and С. melanuroides by larger disk (37 % lc vs. 16–22 and 25–26 % lc). Careproctus laperousei differs from the recently described C. shigemii Matsuzaki, Mori, Kamiunten, Yanagimoto and Kai from off Rausu, Shiretoko Peninsula, Hokkaido, depth 200–300 m (Matsuzaki et al . 2020) by cephalic pores pattern (2-6-6- 1 in the latter), fewer pectoral-fin rays (26 vs. 29–31) and black peritoneum (pale in C. shigemii ). : Published as part of Chernova, Natalia, Thiel, Ralf & Eidus, Irina, 2020, Four new species of Careproctus (Cottoidei: Liparidae) from the deep-water vicinity of the southern Kuril Islands (Western North Pacific), pp. 71-87 in Zootaxa 4821 (1) on pages 73-76, DOI: 10.11646/zootaxa.4821.1.3, http://zenodo.org/record/4398262 : {"references": ["Pitruk, D. L. & Fedorov, V. V. (1990) A new species of the genus Osteodiscus Stein (Liparididae) from the Sea of Okhotsk. Voprosy Ikhtiologii, 30 (5), 856 - 860. [in Russian, English translation in Journal of Ichthyology, 30 (8), 112 - 118]", "Jordan, D. S. & Evermann, B. W. (1898) The fishes of North and Middle America: a descriptive catalogue of the species of fishlike vertebrates found in the waters of North America north of the Isthmus of Panama. Part III. Bulletin of the United States National Museum, 47, i-xxiv + 2183 a- 3136. https: // doi. org / 10.5962 / bhl. title. 39717", "Gilbert, C. H. & Burke, C. V. (1912 a) New cyclogasterid fishes from Japan. Proceedings of the United States National Museum, 42 (1907), 351 - 380. https: // doi. org / 10.5479 / si. 00963801.42 - 1907.351", "Popov, A. M. (1933) K ichtiofau'ne Yaponskogo morya. [Beitrage zur Ichthyofauna des Japanischen Meeres]. Issledovaniya Morey SSSR, Leningrad, 19, 139 - 155. [in Russian, German summary]", "Kido, K. (1983) New and rare liparidid species from the Okhotsk and Bering seas and their adjacent waters. Japanese Journal of Ichthyology, 29 (4), 374 - 384.", "Kido, K. (1988) Phylogeny of the family Liparidae, with the taxonomy of the species found around Japan. Memoirs of the Faculty of Fisheries, Hokkaido University, 35, 1 - 125.", "Kai, Y., Ikeguchi, S. & Nakabo, T. (2011) A new species of the genus Careproctus (Liparidae) from the Sea of Japan. Ichthyological Research, 58 (4), 350 - 354. https: // doi. org / 10.1007 / s 10228 - 011 - 0241 - 3", "Orr, J. W. (2012) Two new species of snailfishes of the genus Careproctus (Scorpaeniformes: Liparidae) from the Bering Sea and eastern North Pacific Ocean, with a redescription of Careproctus ovigerus. Copeia, 100 (2), 257 - 265. https: // doi. org / 10.1643 / CI- 11 - 046", "Murasaki, K., Takami, M. & Fukui, A. (2017) Careproctus surugaensis sp. nov. (Liparidae), a new snailfish from Suruga Trough, Japan. Ichthyological Research, 65 (2), 237 - 244. https: // doi. org / 10.1007 / s 10228 - 017 - 0611 - 6", "Garman, S. (1892) The Discoboli. Cyclopteridae, Liparopsidae, and Liparididae. Memoirs of the Museum of Comparative Zoology, 14 (2), 1 - 96. https: // doi. org / 10.5962 / bhl. title. 13817", "Schmidt, P. Yu. (1950) Fishes of the Sea of Okhotsk [= Ryby Okhotskogo morya]. Transactions of the Pacific Committee of the Academy of Sciences of the U. S. S. R., 6, 1 - 370. [in Russian]", "Kido, K. (1985) New and rare species of the genus Careproctus (Liparididae) from the Bering Sea. Japanese Journal of Ichthyology, 32 (1), 6 - 17.", "Matsuzaki, K., Mori, T., Kamiunten, M., Kai, Y. & Yanagimoto, T. (2020) A new species of Careproctus (Cottoidei: Liparidae) from the Sea of Okhotsk and a redescription of the blacktip snailfish Careproctus zachirus. Ichthyological Research, 67, 399 - 407. https: // doi. org / 10.1007 / s 10228 - 020 - 00734 - w"]} |
format |
Text |
author |
Chernova, Natalia Thiel, Ralf Eidus, Irina |
author_facet |
Chernova, Natalia Thiel, Ralf Eidus, Irina |
author_sort |
Chernova, Natalia |
title |
Careproctus laperousei Chernova, Thiel & Eidus 2020, new species |
title_short |
Careproctus laperousei Chernova, Thiel & Eidus 2020, new species |
title_full |
Careproctus laperousei Chernova, Thiel & Eidus 2020, new species |
title_fullStr |
Careproctus laperousei Chernova, Thiel & Eidus 2020, new species |
title_full_unstemmed |
Careproctus laperousei Chernova, Thiel & Eidus 2020, new species |
title_sort |
careproctus laperousei chernova, thiel & eidus 2020, new species |
publisher |
Zenodo |
publishDate |
2020 |
url |
https://dx.doi.org/10.5281/zenodo.4398175 https://zenodo.org/record/4398175 |
long_lat |
ENVELOPE(-57.831,-57.831,51.500,51.500) |
geographic |
Bering Sea Okhotsk Pacific Chevalier |
geographic_facet |
Bering Sea Okhotsk Pacific Chevalier |
genre |
Bering Sea Kamchatka |
genre_facet |
Bering Sea Kamchatka |
op_relation |
http://zenodo.org/record/4398262 http://publication.plazi.org/id/FF8DEE13D931CF47FFCEBE6BE30CFF9B http://zoobank.org/7B42EA09-7FD7-4D68-934C-CBC91CA0EAA0 https://zenodo.org/communities/biosyslit https://dx.doi.org/10.11646/zootaxa.4821.1.3 http://zenodo.org/record/4398262 http://publication.plazi.org/id/FF8DEE13D931CF47FFCEBE6BE30CFF9B https://dx.doi.org/10.5281/zenodo.4398264 https://dx.doi.org/10.5281/zenodo.4398266 https://dx.doi.org/10.5281/zenodo.4398268 http://zoobank.org/7B42EA09-7FD7-4D68-934C-CBC91CA0EAA0 https://dx.doi.org/10.5281/zenodo.4398176 https://zenodo.org/communities/biosyslit |
op_rights |
Open Access info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5281/zenodo.4398175 https://doi.org/10.11646/zootaxa.4821.1.3 https://doi.org/10.5281/zenodo.4398264 https://doi.org/10.5281/zenodo.4398266 https://doi.org/10.5281/zenodo.4398268 https://doi.org/10.5281/zenodo.4398176 |
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ftdatacite:10.5281/zenodo.4398175 2023-05-15T15:44:03+02:00 Careproctus laperousei Chernova, Thiel & Eidus 2020, new species Chernova, Natalia Thiel, Ralf Eidus, Irina 2020 https://dx.doi.org/10.5281/zenodo.4398175 https://zenodo.org/record/4398175 unknown Zenodo http://zenodo.org/record/4398262 http://publication.plazi.org/id/FF8DEE13D931CF47FFCEBE6BE30CFF9B http://zoobank.org/7B42EA09-7FD7-4D68-934C-CBC91CA0EAA0 https://zenodo.org/communities/biosyslit https://dx.doi.org/10.11646/zootaxa.4821.1.3 http://zenodo.org/record/4398262 http://publication.plazi.org/id/FF8DEE13D931CF47FFCEBE6BE30CFF9B https://dx.doi.org/10.5281/zenodo.4398264 https://dx.doi.org/10.5281/zenodo.4398266 https://dx.doi.org/10.5281/zenodo.4398268 http://zoobank.org/7B42EA09-7FD7-4D68-934C-CBC91CA0EAA0 https://dx.doi.org/10.5281/zenodo.4398176 https://zenodo.org/communities/biosyslit Open Access info:eu-repo/semantics/openAccess Biodiversity Taxonomy Animalia Chordata Actinopterygii Scorpaeniformes Liparidae Careproctus Careproctus laperousei Taxonomic treatment article-journal Text ScholarlyArticle 2020 ftdatacite https://doi.org/10.5281/zenodo.4398175 https://doi.org/10.11646/zootaxa.4821.1.3 https://doi.org/10.5281/zenodo.4398264 https://doi.org/10.5281/zenodo.4398266 https://doi.org/10.5281/zenodo.4398268 https://doi.org/10.5281/zenodo.4398176 2022-02-09T14:13:39Z 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 extending to anterior rim of pupil. Teeth simple, elongated, in oblique rows; 5–6 teeth in a full row in front of jaws. Gill opening completely above the pectoral-fin base, reaching down to the upper ray; 1.7 times longer than eye diameter. Opercular flap large, angular and protrudes markedly back (as a result, head length is larger than predorsal length). Length of operculum is 2 times that of the eye. Cephalic pore pattern 2-6-7-1. Pores small, chin pores slightly brought together. Radiograph. Vertebrae 57 (precaudal 11, caudal 46). Dorsal-fin rays 53 (precaudal 9), anal-fin rays 45, anterior one before the first haemal spine. Rayless pterygiophores absent; anteriormost dorsal-fin ray inserted between neural spines 3 and 4. Pleural ribs in 2 pairs on 8th and 9th vertebrae (Fig. 2). Hypural one, slitted. C 1+4/4+0, principal rays 8; the single secondary ray sits on the dorsoposterior third of hypural. Dorsal-fin origin above the base of pectoral fin. Dorsal fin low, in anterior half of length its height does not exceed a half of the body height. Anal fin is lower than the dorsal fin. Dorsal and anal fins overlap caudal fin at about 1/5th of its length. Pectoral fin with 26 rays, subdivided in two lobes. Upper lobe long (20 % SL and 89 % lc), with 19 thin rays, reaching to anal-fin origin. Lower lobe shorter (67 % of the upper lobe length), with 7 rays, free tips of which protrude from fin membrane. There is lack of shortened rays or wider ray spacing in the transition between two pectoral lobes (clear fin notch absent). Dorsalmost pectoral-fin ray at level of infraorbital pores, symphysis of pectoral fins located below posterior margin of eye. Pelvic disk 2.2 times larger than eye, flattened; anterior lobe well defined, marginal part thin and not cartilaginous, translucent; segmented tubercles around the central part absent. Disk located immediately behind the pectoral symphysis; its posterior edge approximately below the end of the opercular lobe. The distance from chin to anterior margin of disk equal to disk length. Anus opens slightly closer to disk than to anal-fin origin. Distance from posterior margin of disk to anus larger than eye, distance from anus to anal-fin origin less than disk length. Skin thin, translucent, naked and slightly gelatinous. In alcohol, pinkish pigmentation disappears. Body and bases of unpaired fins remain light (muscles and rays show through the skin). Head, abdomen and margins of unpaired fins blackish. Peritoneum black. The oral cavity, pores, disk and anus uncolored. Distribution . The northern slope of the Kuril-Kamchatka Trench, depth 4796–4803 m. The Laperouse snailfish was collected at the greatest depths of all species of Careproctus in the North Pacific. Environmental conditions . Bottom sediments in the box-corer sample at the place of capture included an upper layer of thin gray silt, dense greenish silt and coarse-grained black sand. The ground from the Agassiz trawl included greenish clayey silt interspersed with dense clay. The bycatch was dominated by the holothurian Peniagone sp., Sea feather Umbelulla sp., Scleractinia , sea anemones, sipunculids, polychaetes Travisia sp. and three types of Echiura. Etymology. The species is named after the French Naval officer and seafarer J.F. Laperouse (Chevalier JeanFrançois de Galaup, comte de La Pérouse) (1741— ca. 1788), who made a geographical expedition to the Pacific Ocean and discovered the Bussol Strait in 1787. Comparative notes . A characteristic disk with muscle reduction has been described for species of the genus Osteodiscus Stein (Fig. 3). One of the representatives, O. andriashevi Pitruk & Fedorov, is known from the Sea of Okhotsk (depth 1745–1950 m) (Pitruk & Fedorov 1990). Our specimen is assigned to the genus Careproctus , since it differs from Osteodiscus by lesser disk reduction (in Osteodiscus the musculature and cartilaginous margin of the disk are absent, pelvic rays are covered by transparent skin). Other differences include the presence of 2 pairs of pleural ribs (absent in Osteodiscus ), the structure of the hypural plate (unslitted and fused with the ural center in the latter), and also not a whip-like posterior part of the body. Careproctus laperousei clearly differs from most of deep-water congeners of the North Pacific ( C. bathycoetus , C. batialis , C. cypselurus , С. lycopersicus , C. surugaensis and C. notosaikaiensis Kai, Ikeguchi & Nakabo) in the presence of one or more significantly different characters (vertebrae or fin rays counts, head or disk size, pore pattern, teeth shape, color patterns) (Jordan & Gilbert in Jordan & Evermann 1898; Gilbert & Burke 1912 a; Popov 1933; Kido 1983, 1988; Kai et al . 2011; Orr 2012; Murasaki et al . 2017). By a combination of counts (vertebrae 57, P 26, C principal 8, pores 2-6-7-1), the new species is similar to the following congeners of the North Pacific: C. zachirus Kido, C. cyclocephalus , С. longifilis Garman, С. melanuroi-des Schmidt (Garman 1892; Schmidt 1950; Kido 1983, 1985). Careproctus laperousei differs from C. zachirus and C. сyclocephalus in having a black peritoneum (pale in the both) and shorter head (22.5 % SL vs. 25.7–29.9 and 25.7–27.7 % SL). The new species differs from С. longifilis and С. melanuroides by larger disk (37 % lc vs. 16–22 and 25–26 % lc). Careproctus laperousei differs from the recently described C. shigemii Matsuzaki, Mori, Kamiunten, Yanagimoto and Kai from off Rausu, Shiretoko Peninsula, Hokkaido, depth 200–300 m (Matsuzaki et al . 2020) by cephalic pores pattern (2-6-6- 1 in the latter), fewer pectoral-fin rays (26 vs. 29–31) and black peritoneum (pale in C. shigemii ). : Published as part of Chernova, Natalia, Thiel, Ralf & Eidus, Irina, 2020, Four new species of Careproctus (Cottoidei: Liparidae) from the deep-water vicinity of the southern Kuril Islands (Western North Pacific), pp. 71-87 in Zootaxa 4821 (1) on pages 73-76, DOI: 10.11646/zootaxa.4821.1.3, http://zenodo.org/record/4398262 : {"references": ["Pitruk, D. L. & Fedorov, V. V. (1990) A new species of the genus Osteodiscus Stein (Liparididae) from the Sea of Okhotsk. Voprosy Ikhtiologii, 30 (5), 856 - 860. [in Russian, English translation in Journal of Ichthyology, 30 (8), 112 - 118]", "Jordan, D. S. & Evermann, B. W. (1898) The fishes of North and Middle America: a descriptive catalogue of the species of fishlike vertebrates found in the waters of North America north of the Isthmus of Panama. Part III. Bulletin of the United States National Museum, 47, i-xxiv + 2183 a- 3136. https: // doi. org / 10.5962 / bhl. title. 39717", "Gilbert, C. H. & Burke, C. V. (1912 a) New cyclogasterid fishes from Japan. Proceedings of the United States National Museum, 42 (1907), 351 - 380. https: // doi. org / 10.5479 / si. 00963801.42 - 1907.351", "Popov, A. M. (1933) K ichtiofau'ne Yaponskogo morya. [Beitrage zur Ichthyofauna des Japanischen Meeres]. Issledovaniya Morey SSSR, Leningrad, 19, 139 - 155. [in Russian, German summary]", "Kido, K. (1983) New and rare liparidid species from the Okhotsk and Bering seas and their adjacent waters. Japanese Journal of Ichthyology, 29 (4), 374 - 384.", "Kido, K. (1988) Phylogeny of the family Liparidae, with the taxonomy of the species found around Japan. Memoirs of the Faculty of Fisheries, Hokkaido University, 35, 1 - 125.", "Kai, Y., Ikeguchi, S. & Nakabo, T. (2011) A new species of the genus Careproctus (Liparidae) from the Sea of Japan. Ichthyological Research, 58 (4), 350 - 354. https: // doi. org / 10.1007 / s 10228 - 011 - 0241 - 3", "Orr, J. W. (2012) Two new species of snailfishes of the genus Careproctus (Scorpaeniformes: Liparidae) from the Bering Sea and eastern North Pacific Ocean, with a redescription of Careproctus ovigerus. Copeia, 100 (2), 257 - 265. https: // doi. org / 10.1643 / CI- 11 - 046", "Murasaki, K., Takami, M. & Fukui, A. (2017) Careproctus surugaensis sp. nov. (Liparidae), a new snailfish from Suruga Trough, Japan. Ichthyological Research, 65 (2), 237 - 244. https: // doi. org / 10.1007 / s 10228 - 017 - 0611 - 6", "Garman, S. (1892) The Discoboli. Cyclopteridae, Liparopsidae, and Liparididae. 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