Abstract
Two new species from the family Pseudotanaidae were discovered in material collected in the Kurile-Kamchatka Trench and Japan Trench and are described herein. Cryptocopoides pacificus, n.sp., of the subfamily Cryptocopinae, is the second species known from the genus heretofore represented only by C. articus, a species originating from North Atlantic waters but also reported elsewhere, from which it can be distinguished primarily by differences in body and appendage setation. Pseudotanais nipponicus, n.sp. is very similar to the North Atlantic species, P. longispinus, but can be distinguished by differences in setation of the mandible pars molaris, setation of the merus and carpus of the first pereopod, and also by having a shorter cephalothorax. A third apparently new species of Pseudotanais with forcipate chela was represented by only two specimens and remains undescribed.References
Bird, G.J. & Holdich D.M. (1989) Tanaidacea (Crustacea) of the north-east Atlantic: the subfamily Pseudotanainae (Pseudotanaidae) and the family Nototanaidae. Zoological Journal of the Linnean Society, London, 97, 233–298.
Hansen, H.J. (1887) Oversigt over de paa Dijmpha-Togtet indsamlede Krebsdyr. Dijmphna Togtets zoologisk-botaniske udbytte, Køpenhavn, 1886, 183–286.
Hansen, H.J. (1913) Crustacea, Malacostraca. II. IV. The Order Tanaidacea. Danish Ingolf Expedition, 3, 1–145.
Kudinova-Pasternak, R.K. (1970) Tanaidacea of the Kurile-Kamchatka Trench. Trudy Instituta Okeanologji. Akademija Nauk SSSR, 86, 341–381.
Kudinova-Pasternak, R.K. (1975) Tanaidacea (Crustacea, Malacostraca) from the Atlantic sector of Antarctic and Subantartic. Trudy Instituta Okeanologji. Akademija Nauk SSSR, 103, 194–229.
Kussakin, G.O. (1967) Isopoda and Tanaidacea from the coastal zones of the Antarctic and Subantarctic. Explorations of the fauna of the seas IV (XII). Biological Results of the Soviet Antarctic Expedition (1955–1958), 3, 220–380.
Just, J. (1970) Decapoda, Mysidacea, Isopoda, and Tanaidacea from Jørgen Brønlund Fjord, North Greenland. Meddeleser fra Grønland, 184(9), 1–32.
Larsen, K. (2003) Proposed new standardized anatomical terminology for the Tanaidacea (Peracarida). Journal of Crustacean Biology, 23(3), 644–661.
Sars, G.O. (1909) Crustacea. Report of the second Norwegian Arctic Expedition, “Fram”, 1898–1902, 18, 1–47.
Sieg, J. (1976) Zum natûrlichen System der Dikonophora Lang (Crustacea, Tanaidacea). Zeitschrift fûr Zoologische Systematik und Evolutionsforschung, 14, 177–198.
Sieg, J. (1977) Taxonomische Monographie der familie Pseudotanaidae (Crustacea, Tanaidacea). Mitteilungen aus dem Zoologischen Museum in Berlin, 53, 1–109.
Stebbing, T.R.R. (1900) Arctic Crustacea: Bruce collection. Annales and Magazine of Natural History, (7), 5, 1–16.
Vanhöffen, E. (1914) Die Isopoden der deutschen Südpolar Expedition 1901–1903. Deutsche Südpolar-Expedition, Zoologie, 7(15), 447–598.