Glaucopsyche lycormas (Butler, 1868).
Range: the forest-steppe and southern forest zones of Asia from the Irtysh River to the Pacific.
ssp.: lederi (O. Bang-Haas, 1907); range: Siberia and Amurland.
An egg-laying female; wings closed.
A vegetation stripe under a sandy bluff on the right bank of the Novyi Onon arm of the Onon River 1 km downstream of the village Nizhnii Tsasuchei, Onon District, SE Chita Province, Transbaikalia, Siberia, Russia. 18th June 1995. O. Kosterin.