Last modified: April 14, 2021, 11:10 a.m.
A local species in Belgium, mainly observed in the coastal dunes and the Kempen area in the northeast. In the south of the country it used to be observed in the Condroz and in the Lorraine, there are however no sightings in Wallonia since 2008. In the 2008 Walloon red list it is considered critically endangered but most probably it is locally extinct in the south of Belgium. In Flanders, this species is considered vulnerable.
The adults fly from mid June till the beginning of September.