Last modified: April 9, 2021, 10:23 a.m.
A rare and local species in Belgium. It was formerly more widespread and is now declining slowly. Most observations are now from the Kempen and the south of the country.
The adults fly from mid March till early May, but most specimens were seen during end of March till early April. The males are active during daytime and at dusk. Both sexes come to light, but males infrequently.