Genus Trigonotoma Dejean, 1828

Trigonotoma dohrnii Chaudoir, 1852

Chaudoir described this species from a specimen sent to him in 1967 from M. Dohrn and noted this was not an uncommon species. Also listed for Hong Kong by Lacordaire (1854), Mroczkowski (1957), Hua (2002), Bousquet (2003c), Jedlièka, (1962) and Gemminger & Harold (1868).

A number of pterostichine beetles could not be assigned to a particular genus, that possibly correspond to three distinct species.