7. Oncopsis wagneri Anufriev, 1971

Figs. 27–28, 87–90

Description. Coloration typical, but the membrane of forewings brownish, without dark spots around transverse veins and in apical part (Fig. 27). Females similar to males or evenly brown (Fig. 28).

Penis of typical shape, with ventral margin convex in side view (Figs. 87–88). Lower appendage of dorsal connective bifurcated, sometimes with finely serrated margins of branches, upper branch almost twice as long as lower one, with wide base, strongly curved upwards (Figs. 88–89). Style parallel-margined, with acute tip (Fig. 90).

Body length (including tegmina): ♂, 4.1–4.5 mm; ♀, 4.5–4.8 mm.

In shape of lower appendage of dorsal connective similar only to O. appendiculata Wagner, 1944, but differs in shorter upper branch of appendage (Figs. 88–89 and 126). In addition, O. appendiculata and O. wagneri are allopatric species occurring in Europe and the Far East, respectively.

Host. Betula platyphylla and B. davurica .

Distribution. Russia: Southern Maritime Territory; Japan: Hokkaido, Honshu (Hayashi et al., 2005).