Last modified: April 16, 2020, 10:32 a.m.
A rather common species throughout Belgium.
The young larva lives in the catkins of various Salix species. The later stages lives on Salix leaves on the ground, from a flat bivalved case. It overwinters twice, sometimes three times. Pupation in the case. The moths are active in sunshine, and swarm around the tops of blossoming Salix trees during spring time.
The adults fly from mid April till early May.
Various Salix species.