Identifying features
Medium-sized moth with rather slender wings. The Norwegian population is very contrastingly coloured: the upper side appears almost black and white, with a very dark chocolate brown base colour and a broad, yellow-white band along the edge of both pairs of wings. Within the band, there are a few, small, black spots. The underside of the hindwing is mottled dark grey with a white transverse band slightly off-center.
Similar species
No confused species are described in the examined sources.
Distribution
There is an occurrence in the inner parts of Telemark and Aust-Agder that is relatively isolated from the species’ overall distribution.
Biology
The butterflies are fast and shy, and difficult to catch or observe. The larvae feed on Brachypodium and fescues (Festuca). There are no known threats to the species’ survival in Norway.