Last modified: March 4, 2021, 3:30 p.m.
A common species throughout Belgium.
The species hibernates in the larval stage. The caterpillars often occur commonly in spun galleries under decaying bark of trees.
Pupation in the larval feeding place, sometimes deep in the bark or tree trunk, within a flimsy cocoon.
During daytime, the adults rest on tree trunks. They are active in the morning and later come to light.
The adults fly from June till August.
The larva lives from September till next spring on decayed wood, under bark etc.
Deciduous and mixed forests, with a preference for: Fagus, Quercus–Fagus or Quercus–Carpinus forests; but also abandoned gardens and ruderal places where dead wood is left.