Colias tyche Boeber, 1812.
Range: polar regions of Euroasia and Alaska and the mountains of the temperate Asia.

ssp.: kolosovae Churkin et Grieshuber, 2003; range: Chukotka, Kamchatka

A male on Primula cuneifolia

A small alpine meadow in a brook valley, the Balaganchik Mts., Kamchatka, 18th August 1992.