Last modified: April 23, 2019, 12:44 p.m.
A fairly common species throughout Belgium.
Native
Hibernates as a pupa, sometimes for several years, in a sturdy cocoon on the ground among plant debris. The adults come to light and sugar.
The adults fly from mid May till early August in one generation a year. Almost every year very small numbers are seen during September.
The larva lives mainly on Quercus, but also on Fagus and Betula.