Last modified: Feb. 22, 2021, 2:06 p.m.
A not so common species in Belgium.
See also bladmineerders.be
The young larva makes a small circular blotch mine in the leaves of the food plant Then it falls to the ground in a case cut from the blotch. The caterpillar then eats withered leaves. It hibernates fully-fed in that case.
Pupation in the case, normally attached vertical among a base of a tree trunk.
The moths are active during the day and later come to light.
The adults fly from mid April till the end of May in one generation a year.