Vacciniina optilete (Knoch, 1781) (= Polyommatus optilete) -Cranberry Blue.
Range: the northern Euroasia southwards to the mountains of Mongolia, Korea, and Japan, NW North America.
A female; wings closed.
A mossy larch (Larix gmelinii (Rupr.) Rupr.) taiga at the village Akotuy, the junction of the mountain ranges Uryumkanskii and Kukul'bei, Aleksandrovskozavodskoi District, E Chita Province, E Transbaikalia, Siberia, Russia. 23rd July 1997. O. Kosterin.