Boloria freija

Boloria freija, the Freija fritillary, is a butterfly of the family Nymphalidae with a circumboreal distribution. It occurs in bogs and tundra. Its range includes Northern Europe to the north of 60° N, occasionally more southern locations, the Urals, Siberia, the Russian Far East, mountains of northern Mongolia and Hokkaido, as well as North America, extending in the Rocky Mountains to 35° N. Larvae feed on Rubus chamaemorus, Dryas sp., Vaccinium uliginosum, Arctostaphylos alpina, A. uva-ursi, Empetrum nigrum, Rhododendron aureum, Rh. lapponicum. The species produces one generation every two years.