Prosternini Gistel, 1856

Arimoto, Kôichi, 2020, First record and new species of the genus Calambus Thomson (Coleoptera Elateridae, Dendrometrinae) from Taiwan, Zootaxa 4853 (1), pp. 42-50 : 43

Tribe Prosternini Gistel, 1856

Included genera from Taiwan. Five genera: Actenicerus Kiesenwetter, 1858 ; Calambus Thomson, 1859 ; Corymbitodes Buysson, 1904 ; Gnathodicrus Fleutiaux, 1934 ; Taiyaru Kishii, 1993 .

An identification key to the genera of the tribe Prosternini in Taiwan

1. Pronotum shorter than wide or as long as wide, without median longitudinal depression; elytral outmost interval narrowly extending sideways, forming flat plate.................................... Calambus Thomson, 1859

- Pronotum longer than wide, with median longitudinal depression; elytral outmost interval simple................... 2

2. Antennae distinctly serrate from antennomere IV; scutellar shield with anterior margin emarginated, with side narrowed medially......................................................................... Gnathodicrus Fleutiaux, 1934

- Antennae distinctly serrate from antennomere III; scutellar shield with anterior margin almost transverse or broadly rounded, with sides almost parallel medially....................................................................... 3

3. Pronotum with vestige of sublateral incision near hind angles; apices of elytra rounded....... Corymbitodes Buysson, 1904

- Pronotum with subapical incision near hind angles; apices of elytra rather transverse................................ 4

4. Hind angles of pronotum with carina; legs simple.................................... Actenicerus Kiesenwetter, 1858

- Hind angles of pronotum without carina; legs elongate, well developed............................ Taiyaru Kishii, 1993