Mysids (Crustacea, Mysidacea) of the Antarctic and Subantarctic from the collection of the Zoological Institute, Russian Academy of Sciences. Mysida: Leptomysini and Mysini tribes

Sixteen species of mysids of the tribe Leptomysini and eight species of the tribe Mysini are known in the Antarctic and Subantarctic to the south of the subtropic convergence in the southern hemisphere. The collections of the Zoological Institute contain 180 samples of mysids of these tribes with 2124 specimens that were collected in these regions (25 expeditions) during 1956-2000. There are 5 species of Leptomysim tribe and 2 species of the tribe Mysini. The earlier described species Antarctomysis profunda Ledoyer 1990 was found to be a geographical subspecies of A. maxima. New data on the geographical and bathymetric distribution of these mysid species, as well as the first regional key for the identification of Leptomysim and Mysini species are presented. The variability of some morphological structures in the species of these tribes are discussed.