Key to the Japanese genera of the subfamily Tribalinae (Ohara, 1999a).
1 (2) Elytra well impressed several distinct dorsal striae. ........... Epierus Erichson, 1834
2 (1) Elytra without dorsal striae except sutural stria. If the dorsal striae prsent, the striae usually on humeral area and very rudimentary. .................... Tribalus Erichson, 1834