Ethelurgus genus group

(subtribe Ethelurgina sensu Townes (1970))

Two genera, Ethelurgus Förster, 1869 and Rhembobius Förster, 1869, have been recorded from Japan. In this study, I review both genera. The Japanese genera can be distinguished by the following key.

Key to Japanese genera of Ethelurgus genus group

1. Vein 2m-cu vertical (Fig. 32C). Propodeum with strong, projecting apophyses (Figs 32A, D). T II largely smooth except for longitudinally striate basally in Japanese species (Fig. 32D). ................................................ Rhembobius Förster, 1869 *

-. Vein 2m-cu inclivous. Propodeum without distinct apophyses (Figs 30A, 31A). T II largely punctate in Japanese species. ................................................. Ethelurgus Förster, 1869 **

* This genus is sometimes misidentified with Pleolophus Townes, 1962 (Aptesini Smith & Shenfelt, 1955 of Cryptinae) because vein 2m-cu vertical. Users should carefully check the character states of them.

** This genus is sometimes misidentified with Stibeutes Förster, 1869 ( Phygadeuon genus group). Users should carefully check the character states of clypeus, propodeum, and ovipositor.