Oeneis uhleriOeneis uhleri, or Uhler's Arctic, is a species of butterfly in the family Nymphalidae.The larvae feed on various grasses and sedges, including Festuca, Koeleria and Poa species. Fourth-instar larvae overwinter and emerge in spring.SubspeciesOeneis uhleri uhleri Oeneis uhleri cairnesi Gibson, 1920 Oeneis uhleri nahanni Dyar, 1904 Oeneis uhleri reinthali Brown, 1953 ''Oeneis uhleri varuna''