Last modified: Feb. 25, 2022, 10:34 a.m.
Wingspan is about: 11 mm.
Head, thorax and tegulae beige. In fresh animals head, thorax and base of forewing staining yellowish and the front edge of the thorax darkened, the fringes in the apex of the forewings are grey to blackish and show no, or only a very slight, tinge of red.
Blotch mines in the lower leaves, with the frass in thick, black heaps.
See also bladmineerders.be
The life history is still not completely resolved. Young larvae have been recorded to feed in early spring, though some authors mention August as the feeding period. Pupation inside the mine or in the earth.
The species apparently hibernates as a young larva, though some authors state that it hibernates in the adult stage.
Adults are active at night and occasionally come to light.
One generation a year: from mid May till early August. Mostly found in July.
Monophagous on Epilobium ssp.
Woods, clearings in woods.