Tricinctevylaeus, Pesenko, 2007

Pesenko, Yuri A., 2007, Subgeneric classification of the Palaearctic bees of the genus Evylaeus Robertson (Hymenoptera: Halictidae), Zootaxa 1500 (1), pp. 1-54 : 6

8 (7). Male: gonostylus large, arrow-shaped, usually with several very long and thick bristles. Female: posterior vertical surface of propodeum concave, with rounded carina along dorsal margin, usually gradually curved onto lateral surfaces; T4 almost covered with tomentum (except for E. imbecillus ) .................................................................................................................. 6. Tricinctevylaeus subg. n. – Male: gonostylus smaller and/or differently shaped, with thin and relatively short bristles or nearly bare. Female: posterior vertical surface of propodeum flat, carinate laterally; T4 only with anterior hair band or without it (except for subgenus Pauxevylaeus and some other species, e.g., E. obscuratus belonging to subgenus Malachevylaeus , T4 of which is almost covered with tomentum, usually moderately sparse); armature of inner metatibial spur various........................................................... 9