FIGURES 578–588 in Systematic position of Thraulodes Ulmer 1920 (Ephemeroptera: Leptophlebiidae) and descriptions of new and little-known species

FIGURES 578–588. Thraulodes alboniger sp. n. 578, hind wing; 579, genitalia of male imago in ventral view; 580, dorsal margin of styliger and penis of another specimen; 581, subimaginal exuviae of genitalia; 582, penis in lateral view; 583, posterior margin of IX sternum of female larva; 584, the same of male larva with protogonostyli and protopenis; 585–588, tergalii I, III, VI and VII (578, 580–581, 584–588, holotype).