Last modified: March 10, 2026, 2:38 p.m.
A very rare species observed in 1938 and 1939 in Hautes-Fagnes at LG.
Not seen since then, but given the vast and difficult terrain it is still quite possible that this species is still present.
Native
The adult butterflies have a short flight period in May.
The larva feed on Eriophorum angustifolium, Eriophorum vaginatum and Eriophorum latifolium.
Bog habitats, peatland, moor and swamp meadows.