Nihonogomphus ruptus (Selys, 1857)

An East Palaearctic species ranging from the Pacific to the Ob' River. The northernmost gomphid species reaching 60o N

A male

The Argun'(Hailar) River left bank in its lowest reaches (163 km upstream of its junction with the Shilka River to produce the great Amur (Heilongjang) River. 13 km S of the villages Uryupino, Gazimurskozavodskoi District, E Chita Province, E Transbaikalia, Siberia, Russia, and Yimuhe, Inner Mongolia Province, China. 28th July 1997. O. Kosterin.

O. Kosterin

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