Last modified: Jan. 21, 2021, 2:27 p.m.
A common species throughout Belgium, more observed in the northern part.
The adults fly from the beginning of May till the end of September, sometimes as late as October. They fly at night and come to light.
The larvae live on hay of clover and grass, in squirrels' dreys, and probably also in thatch and dead leaves. They hibernate. Pupation in an oval cocoon in the larval feeding place.