A new species of the grenadier genus Coelorinchus from the Hawaiian-Emperor seamount chain (the Pacific Ocean) (Teleostei, Gadiformes, Macrouridae)
DOI:
https://doi.org/10.33910/2686-9519-2020-12-3-299-310Keywords:
Macrouridae, Coelorinchus, new species, submarine ridges, north-central Pacific OceanAbstract
In this paper, a new species, Coelorinchus idiolepis, is described from the Hawaiian-Emperor seamount chain in the Pacific Ocean. It is similar to C. anisacanthus from the Emperor seamount chain; however, it differs from the latter in the proportions of its head, in the shorter pelvic fins, and in the details of pigmentation. A key for identification of the species of Coelorinchus from the Hawaiian-Emperor seamount chain is also presented. Diagnosis of the new grenadier species: a member of the “C. acanthiger” group (sensu Prokofiev, Iwamoto 2020) with underside of head completely scaleless; dorsal surface of snout with narrow scaleless areas laterally from medial nasal ridge; dorsal contour of snout straight, sides only slightly convex in dorsal view; snout length 2.6 times in HL, eye length 1.2–1.3 times shorter than postorbital length; upper jaw reaching the posterior third of the eye; pelvic fin (with filament) about ¼ of head length; spinule rows on top of head in several divergent rows; spinule rows on flank scales variably developed, medial row more or less enlarged, lateral rows sometimes reduced, disappearing in smaller specimens, spinules in rows greatly depressed, with wide buttresses not forming transverse ridges.
References
ЛИТЕРАТУРА
Сазонов, Ю. И. (1994) Дополнения к списку макрурусов (Gadiformes, Bathygadidae и Macrouridae) Северо-Западного подводного хребта (Тихий океан). Вопросы ихтиологии, т. 34, № 2, с. 149–160.
Fricke, R., Eschmeyer, W. N., van der Laan, R. (2020) Catalog of fishes: Genera, species, references. California Academy of Sciences. Available at: http://researcharchive.calacademy.org/research/ichthyology/catalog/fishcatmain.asp (accessed 01.04.2020).
Iwamoto, T. (1970) Macrourid fishes of the Gulf of Guinea. In: The R/V Pillsbury deep-sea biological expedition to the Gulf of Guinea, 1964–65. Miami, FL: University of Miami. Institute of Marine Science, pp. 316–431. (Studies in Tropical Oceanography. Vol. 4. Pt. 2).
Iwamoto, T., Okamoto, M. (2015) A new grenadier fish of the genus Lucigadus (Macrouridae, Gadiformes, Teleostei) from the Emperor Seamounts, Northwestern Pacific. Proceedings of the California Academy of Sciences, ser. 4., vol. 62, pt 2, no. 13, pp. 369–380.
Iwamoto, T., Sazonov, Y. I. (1988) A review of the southeastern Pacific Coryphaenoides (sensu lato) (Pisces, Gadiformes, Macrouridae). Proceedings of the California Academy of Sciences, ser. 4, vol. 45, no. 3, pp. 35–82.
Mundy, B. C. (2005) Checklist of the fishes of the Hawaiian Archipelago. Honolulu: Bishop Museum Press, 704 p. (Bishop Museum Bulletin in Zoology. Vol. 6).
Nakayama, N., Matsunuma, M., Endo, H. (2016) Redescription of Coelorinchus tokiensis (Steindachner and Dӧderlein 1887) (Actinopterygii: Gadiformes: Macrouridae), with comments on its synonymy. Ichthyological Research, vol. 63, no. 2, pp. 247–259. DOI: 10.1007/s10228-015-0493-4
Okamura, O. (1970a) Fauna Japonica. Macrourina (Pisces). Tokyo: Academic Press of Japan, 216 p.
Okamura, O. (1970b) Studies on the macrouroid fishes of Japan. Morphology, ecology and phylogeny. Reports of the USA Marine Biological Station, vol. 17, no. 1–2, pp. 1–179.
Prokofiev, A. M., Iwamoto, T. (2020) Revision of the grenadier genus Coelorinchus (Teleostei: Macrouridae) from the Mascarene Ridge, western Indian Ocean, with description of two new species. Proceedings of the California Academy of Sciences, ser. 4, vol. 66, no. 9, pp. 231–273.
REFERENCES
Fricke, R., Eschmeyer, W. N., van der Laan, R. (2020) Catalog of fishes: Genera, species, references. California Academy of Sciences. Available at: http://researcharchive.calacademy.org/research/ichthyology/catalog/fishcatmain.asp (accessed 01.04.2020). (In English)
Iwamoto, T. (1970) Macrourid fishes of the Gulf of Guinea. In: The R/V Pillsbury deep-sea biological expedition to the Gulf of Guinea, 1964–65. Miami, FL: University of Miami. Institute of Marine Science, pp. 316–431. (Studies in Tropical Oceanography. Vol. 4. Pt. 2). (In English)
Iwamoto, T., Okamoto, M. (2015) A new grenadier fish of the genus Lucigadus (Macrouridae, Gadiformes, Teleostei) from the Emperor Seamounts, Northwestern Pacific. Proceedings of the California Academy of Sciences, ser. 4., vol. 62, pt 2, no. 13, pp. 369–380. (In English)
Iwamoto, T., Sazonov, Y. I. (1988) A review of the southeastern Pacific Coryphaenoides (sensu lato) (Pisces, Gadiformes, Macrouridae). Proceedings of the California Academy of Sciences, ser. 4, vol. 45, no. 3, pp. 35–82. (In English)
Mundy, B. C. (2005) Checklist of the fishes of the Hawaiian Archipelago. Honolulu: Bishop Museum Press, 704 p. (Bishop Museum Bulletin in Zoology. Vol. 6). (In English)
Nakayama, N., Matsunuma, M., Endo, H. (2016) Redescription of Coelorinchus tokiensis (Steindachner and Dӧderlein 1887) (Actinopterygii: Gadiformes: Macrouridae), with comments on its synonymy. Ichthyological Research, vol. 63, no. 2, pp. 247–259. DOI: 10.1007/s10228-015-0493-4 (In English)
Okamura, O. (1970a) Fauna Japonica. Macrourina (Pisces). Tokyo: Academic Press of Japan, 216 p. (In English)
Okamura, O. (1970b) Studies on the macrouroid fishes of Japan. Morphology, ecology and phylogeny. Reports of the USA Marine Biological Station, vol. 17, no. 1–2, pp. 1–179. (In English)
Prokofiev, A. M., Iwamoto, T. (2020) Revision of the grenadier genus Coelorinchus (Teleostei: Macrouridae) from the Mascarene Ridge, western Indian Ocean, with description of two new species. Proceedings of the California Academy of Sciences, ser. 4, vol. 66, no. 9, pp. 231–273. (In English)
Sazonov, Y. I. (1994) Dopolneniya k spisku macrurusov (Gadiformes, Bathygadidae i Macrouridae) Severo-Zapadnogo podvodnogo khrebta (Tikhij okean) [Additions to the list of macrourids (Gadiformes, Bathygadidae, and Macrouridae) from the Northwest Pacific Ridge]. Voprosy ikhtiologii, vol. 34, no. 2, pp. 149–160. (In Russian)
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