Last modified: Dec. 8, 2024, 12:17 p.m.
A very rare and very local species in Belgium. Most observations are in the southern part of Belgium. A very tiny population occurs at the coast in Ostend (WV).
In some southern locations the species is not rare, especially in calcareous area's.
This species is considered Critically Endangered according to the IUCN Red List category for Flanders 2023.
Native
Hibernates as a pupa in a cocoon among plant debris. Adults can be seen during the day, but are most active from dusk on and later come to light.
The adults fly from May till mid-July, in most years a partial second generation occurs from August till late September.