FIGURE 3 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 3. Bythotrephes arcticus Lilljeborg, adult parthenogenetic females, lake 1 (basin of the River Tchernaya, Bol'shezemelskaya tundra, Arkhangel'skaya region, North-Eastern European Russia). A, thoracic limbs, general view. B, pseudognathobase of thoracic limb of first pair (tl I). C, anterior lateral setae of first segment of endopodite of tl I (C, see Fig. 2). D, armament of anterior lateral seta of first segment of endopodite of tl I (C, see Fig. 2). E, armament of posterior distal seta of first segment of endopodite of tl I. F, armament of terminal seta of tl I. G, anterior and posterior lateral setae of first segment of endopodite of thoracic limb of second pair (tl II). H, armament of distal part of anterior lateral seta of endopodite of tl II (B, see Fig. 2). I, distal anterior seta of first segment of endopodite of tl II (C, see Fig. 2). J, anterior subterminal seta of tl II (E, see Fig. 2). K, proximal part of anterior terminal seta of tl II (D, see Fig. 2). L, distal part of pseudognathobase of tl II (pore is arrowed). Scale bars: A = 250 µm; G, J = 50 µm; B, C, F, I, K, L = 25 µm; D, E, H =10 µm.