Key to males of Bittacomorphella from the Oriental region

1. 4th and 5th tarsomeres dark brown........................................................................ 2

- 4th and 5th tarsomeres infuscate.......................................................................... 3

2. 1st tarsomere of foreleg with white basal part............................................ B. zhaotongensis sp. nov.

- 1st tarsomere of foreleg without white basal part........................................... B. thaiensis Alexander

3. 1st tarsomere of foreleg with white end; epandrium bilobate, each roughly rectangular; parameres club-shaped, round and transparent apically; conical part of hypandrium papillary at dorsal view........................ B. lini Young and Fang

- 1st tarsomere of foreleg without white end; epandrium bilobate, each roughly semicircular; parameres tapered and strongly sclerotized apically and strongly curved inward; conical part of hypandrium round at dorsal view..... B. gongshana sp. nov.