Identifying features
Wingspan: 23-28 mm. The upperside is chocolate brown with orange spots, and often features a broad dark band on the forewings – sometimes also on the hindwings.
Similar species
The species can be confused with several of the Danish bluebird species, but especially the brown females of common blue can be quite challenging. The underside looks almost identical to common blue, except that it ‘often’ has a spot under the central spot on the forewing, and that it does not have a shifted spot in the spot arc on the hindwing, unlike brown argus.
Distribution
Widespread, but very localised in East Jutland, Funen, Bornholm, Samsø, and in the northern part of Zealand. Furthermore, there are a few smaller areas in North Jutland and on Møn.
Biology
The larva feeds on various cranesbill species.