Priochirus (Eutriacanthus), Jakobson, 1908

Wu, Jie & Zhou, Hong-zhang, 2007, Taxonomy Of The Subgenus Eutriacanthus Jakobson, Of The Genus Priochirus Sharp, From Southern China, With The Description Of Two New Species From Guangxi And Yunnan (Coleoptera: Staphylinidae: Osoriinae), Raffles Bulletin of Zoology 55 (2), pp. 267-276 : 268

Key to species of subgenus Eutriacanthus from South China

1. Head: median tooth shorter than lateral tooth ..................... 2

– Head: median tooth longer than lateral tooth ...................... 3

2. Sides of pronotum convergent anteriorly; mentum with two distinct transverse ridges ....... P. (E.) curtcornis, new species

– Sides of pronotum parallel; mentum with one transverse ridge ............................................... P. (E.) unicolor (Laporte)

3. Lateral line vanishing before reaching protruding part of posterior margin of pronotum; 8th abdominal segment red ... ............................................... P. (E.) pulchellus, new species

– Lateral line complete, reaching posterior margin of pronotum; 8th abdominal segment black ............................................... 4

4. Pronotum and elytra red; body size larger (13–15 mm) ........ .................................................... P. (E.) bipunctatus (Fauvel)

– Pronotum and elytra black; body size smaller (9–11 mm) .... .................................................. P. (E.) tonkinensis Bernhauer