Material examined. 1 ♂, 1 ♀ (CUK), Mongun-Taiga, 24.vi.1968; 2 ♂ (ZISP), Tes-Chem, 26.vi.1969, Yu. Kostyuk; 1 ♂ (CUK), Shuurmak vill., 17.vi.2001, P. Ustjuzhanin; 1 ♂ (CUK), Sush', 17.vi.2002, R. Yakovlev. Distribution. Siberia, NE China, Russian Far East (Kamchatka).