Last modified: May 29, 2020, 7:55 p.m.
A common spring species throughout Belgium.
The caterpillars are frequently eating other caterpillars. Hibernates as a pupa in an underground cocoon, often close to a tree trunk. The adults come to light, sugar and sallow catkins.
The adults fly in one generation a year; when conditions are mild, onwards from mid February till late April.