Last modified: Jan. 24, 2020, 10:58 a.m.
First observation in Belgium in 1993 in AN. A not so common species in many parts of our country.
A short, straight gallery, later widening to an irregular blotch. The frass is concentrated at the beginning of the mine, though some frass is ejected as well. See also bladmineerders.be
The larva constructs a silken tube inside the mine in which it retracts to rest between feeding periods or where it hides. The species hibernates in the larval stage inside the mine. Pupation in the mine at the narrow part of the mine.
The adults fly around the foodplant at dusk and later come to light.
One generation a year: June till the end of October.
Rather dry situations where the foodplant grows.