Dryas octopetala
Adults usually fly in sunshine from late May to September, depending on the location. Larvae feed on crowberry ("Empetrum nigrum") in northern Europe. Elsewhere they are polyphagous, mainly feeding on "Helianthemum nummularium", "Anthyllis vulneraria", "Dryas octopetala", "Silene acaulis", "Astragalus alpinus", "Carex", "Polygonum viviparum", "Salix", "Thymus", "Vaccinium uliginosum", "Chamorchis alpina", "Betula nana", "Viscaria alpina", "Thalictrum alpinum", "Cassiope tetragona", "Bartsia alpina" and "Saxifraga aizoides". This species hibernates in the form of a larva.