Last modified: Jan. 20, 2020, 2:30 p.m.
A rather rare species throughout Belgium.
See also bladmineerders.be
The adults fly in two generations a year from May till June and again during August. They come to light.
The larva lives under a slight silken web on the upperside of the leaves of Betulus. It pupates in a dense white cocoon on or close to the ground.