Labay V. S. Additional data on morphology and distribution of Melitoides valida (Shoemaker, 1955) (Amphipoda, Melitidae). Marine Biological Journal, 2021, vol. 6, no. 1, pp. 58-66. https://doi.org/10.21072/mbj.2021.06.1.05



The genus Melitoides Gurjanova, 1934 (Amphipoda, Melitidae) includes three species from the Arctic and northwestern Pacific: Melitoides makarovi Gurjanova, 1934, M. valida (Shoemaker, 1955), and M. kawaii Labay, 2014. M. makarovi and M. kawaii only were recorded until recently in the seas of the Russian Far East. Only two specimens of M. valida were found once near the Arctic coast of Alaska; therefore, the morphological description of the species was incomplete, which led to difficulties with its generic identification. For the first time, M. valida was found in the seas of the Russian Far East in September 2018 on the shelf of the Sea of Okhotsk, near the North-Eastern Sakhalin Island at the depth of 29 m on the sand bottom. Detailed re-description of the species was carried out using optical and electronic scanning microscopes by the Coleman protocol. The material collected is stored at the Crustacea collection of the Zoological Museum of Far Eastern Federal University (Vladivostok). The specimen from the Sea of Okhotsk is identical to the specimens of the type series from the Arctic coast of Alaska in the form of dorsal carination (with several teeth on posterior margin of pleon segments 2, 3 and urosomites 1, 2), in the structure of pereopods 1–7, especially in the form of propodus of pereopods 2 (palm with distinct posterior-distal tooth, as well as with three large and one small obtuse palmar teeth). M. valida description has been substantially supplemented, and information on its range has been expanded.


V. S. Labay

head of the laboratory, D. Sc.




Barnard J. L. Index to the families, genera and species of the gammaridean Amphipoda (Crustacea). Allan Hancock Foundation Publications. Occasional Papers, 1958, no. 19, p.

Barnard J. L., Barnard C. M. Freshwater Amphipoda of the World. I. Evolutionary Patterns. II. Handbook and Bibliography. Mount Vernon, Virginia : Hayfield Associates, 1983, p.

Coleman C. O. “Digital inking”: How to make perfect line drawings on computers. Organisms, Diversity & Evolution, 2003, vol. 3, iss. 4, pp. 303–304. http://dx.doi.org/10.1078/1439-6092-00081

Gurjanova E. Neue Formen von Amphipoden des Karischen Meeres. Zoologischer Anzeiger, 1934, vol. 108, pp. 122–130.

Gurjanova E. F. Bokoplavy morei SSSR i sopredel’nykh vod (Amphipoda, Gammaridea). Moscow ; Leningrad : AN SSSR, 1951, 1032 p. (Opredeliteli po faune morei ; vol. 41). (in Russ.)

Jarrett N. E., Bousfield E. L. The Amphipod superfamily Hadzioidea on the Pacific coast of North America: Family Melitidae. Part I. The Melita group: Systematic and distributional ecology. Amphipacifica. Journal of Systematic Biology, 1996, vol. 2, no. 2, pp. 3–74.

Karaman G. S. Redescription of Melita planaterga Kunkel, 1910 from Bermuda with revision of the genera Melita Leach and Abludomelita n. gen. Poljoprivreda i šumarstvo, Titograd, 1981, vol. 27, no. 1, pp. 29–50.

Labay V. S. Review of amphipods of the Melita group (Amphipoda: Melitidae) from the coastal waters of Sakhalin Island (Far East of Russia). II. Genera Quasimelita Jarrett and Bousfield, 1996 and Melitoides Gurjanova, 1934. Zootaxa, 2014, vol. 3689, no. 3, pp. 237–280. http://dx.doi.org/10.11646/zootaxa.3869.3.3

Shoemaker C. R. Amphipoda collected at the Arctic Laboratory, Office of Naval Research, Point Barrow, Alaska, by G. E. McGinite. Smithsonian Miscellaneous Collections, 1955, vol. 128, no. 1, pp. 1–78.

Watling L. A classification system for crustacean setae based on the homology concept. In: Functional Morphology of Feeding and Grooming in Crustacea / B. E. Felgenhauer, L. Watling, A. B. Thistle (Eds). Rotterdam, Netherlands : A. A. Balkema, 1989, pp. 15–26. (Crustaceans issues ; vol. 6).


The results were obtained within the framework of the state assignment of the Ministry of Education and Science of the Russian Federation (publication number 6.9551.2017/8.9).



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