FIGURE 6 in Redescription of Bythotrephes arcticus Lilljeborg, 1901 (Crustacea: Cladocera: Onychopoda) and confirmation of an independent species status of the distant Transcaucasian populations of the genus Bythotrephes Leydig

FIGURE 6. Bythotrephes arcticus Lilljeborg, males (A–I) and parthenogenetic female of first generation (J, K); (A, I, swamps of Kildin Island (Murmansk region, Russia); B, C, H, Lake Dubovskoi (Bol'shezemelskaya tundra, Arkhangel'skaya region, North-Eastern European Russia); D, Karesuando (Norrbotten, Sweden); E, Porsanger lake (Norway); F, Karabel'naya bay ("Karabella"), Kola Peninsula, Russia); G, Forellenmägen (Norway); J, K, Alexandrovsk (Kola Peninsula, Russia)). A, male, general lateral view. B, male's hook. C–G, claws of postabdomen and caudal spine. H, I, copulatory appendage. J, thoracic limb of first pair (tl I). K, postabdomen and caudal spine with claws.