Last modified: Oct. 26, 2020, 3:57 p.m.
A common species throughout Belgium.
Hibernates as an egg, in a batch of several hundred on the outside of the empty cocoon of the female, attached to some part of the foodplant, or to a nearby fence , wall etc... The males are active during daytime and later come occasionally to light. The females have vestigial wings and never leaves her cocoon.
The adults fly from mid May till mid October, occasionally later.