Identifying features
Wingspan 24–28 mm. The upperside of the wings is dark brown. The forewing exhibits grey shading and 1–3 white spots along the leading edge, approximately one-fifth from the outer margin. Along the outer margin, there is a row of light spots that continues down the outer edge of the hindwing. In the male, the leading edge of the forewing forms a fold.
Similar species
No confused species are described in the examined sources.
Distribution
Quite common in low-lying areas within Eastern Norway and Southern Norway. Scattered in the region of Vestlandet, from Sunnmøre, and in the inner part of Eastern Norway, from Lom.
Biology
The larvae live on bird's-foot trefoil and other plants in the buttercup family. Larval development occurs in July–September, and the larva overwinters as a fully grown specimen in a tangled leaf. The pupa forms inside the tangle in the spring.