Oeneis jutta

The Jutta Arctic or Baltic Grayling (Oeneis jutta) is a species of butterflies in the subfamily Satyrinae with a circumboreal distribution. It occurs in bogs and tundra in the north of Europe, the Baltic States, the Urals, Siberia, Northern Kazakhstan, the Russian Far East, Northern Mongolia, Northeastern China, North Korea, and North America (Canada from Newfoundland to British Columbia). Larvae feed on Carex and Eriophorum, possibly also Glyceria, Molinia, and Juncus. Ledum palustre is the preferred nectar plant of the adult butterflies. The species has one generation every one or two years, depending on the location.