Barypalpus, Cameron, 1932

Schillhammer, Harald, 2019, A review of Barypalpus Cameron, 1932 (Coleoptera: Staphylinidae) with descriptions of three new species, Zootaxa 4629 (4), pp. 571-582 : 581

Key to species of Barypalpus

1 Posterior margin and suture of elytra, and posterior margins of all visible tergites clearly and broadly reddish; base of head and tempora densely and coarsely punctate; China....................................................... chinensis

- Posterior margin and suture of elytra black, posterior margins of first two visible tergites black or very narrowly, obscurely reddish; base of head and tempora with a few larger punctures, bearing macro-setae................................ 2

2 Head less than 1.2 times as wide as long, eyes smaller, tempora at least 1.8 times as long as eyes, elytral punctation rather coarse, almost uniform; median lobe of aedeagus straight in lateral view; Laos............................ holzschuhi

- Head at least 1.2 times as wide as long, eyes larger, tempora at most 1.8 times as long as eyes, elytral punctation irregular, usually with larger punctures forming irregular longitudinal rows among finer ground punctation; median lobe of aedeagus bent toward paramere, or even slightly hooked at apex........................................................... 3

3 Median lobe of aedeagus (lateral view) slightly hooked at apex, paramere in lateral view much narrower than median lobe; eyes smaller, tempora 1.6–1.8 times as long as eyes; Myanmar............................................ ruficornis

- Median lobe of aedeagus (lateral view) not hooked at apex, paramere in lateral view about as wide as median lobe; eyes larger, tempora 1.5–1.6 times as long as eyes; Laos........................................................... shibatai