Last modified: July 15, 2020, 4:48 p.m.
An uncommon species in Belgium.
The adults fly from April till June. They are active at dusk and come to light.
At first, the larva bores into a twig of Betula or Alnus glutinosa. Later on, it turns down the edge of a leaf. It pupates in a cocoon amongst leaf-litter. The pupa hibernates.