Last modified: March 2, 2021, 11:54 a.m.
A common species throughout Belgium.
The larva lives in a shoot or in the catkins of the food plant, sometimes congregating under bark in the spring. The larva hibernates.
Pupation in a cocoon in or under the bark.
They occasionally come to light.
The adults fly from late June till the end of September, sometimes well into October.
The larva lives on Betula spp. or Alnus glutinosa.