Ethelurgus, Forster, 1869

Watanabe, Kyohei, 2021, Taxonomic and Zoogeographic Study of the Japanese Phygadeuontinae (Hymenoptera, Ichneumonidae), with Descriptions of 17 New Species, Bulletin of the Kanagawa Prefectural Museum (Natural Science) 50, pp. 55-136 : 90-91

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.

Figures

Fig. 32. Rhembobius perscrutator (Thunberg,1822), KPM-NK 81957 (A, C, D) and 81961 (C), females from Japan ―A, lateral habitus; B, head, frontal view; C, fore wing; D, propodeum, T I, and T II, dorsal view.

Fig.30. Ethelurgus episyrphicola Kusigemati, 1983, KPM-NK 81913 (B, C) and 81924 (A, D), females from Japan ―A, lateral habitus;B, head, frontal view; C, head, mesosoma, and metasoma, dorsal view; D, mesosoma, lateral view.

Fig. 31. Ethelurgus sodalis kumatai Kusigemati, 1983, KPM-NK 81947 (C) and 81950 (A, B, D), females from Japan ―A, lateral habitus; B, head, frontal view; C, head, mesosoma, and metasoma, dorsal view; D, mesosoma, lateral view.