Cercion v-nigrum (Needham, 1930)
A Manshurian species penetrating into southern Far East of Russia and SE Transbaikalia.
A male perching on a Potamogeton leaf
A small Lake Kudon on the right bank floodland of the Onon River 10 km upstream of Nizhnii Tsasuchei village, Onon District, Chita Province, SE Transbaikalia, E Siberia, Russia. 6th July 1996.
O. Kosterin