Last modified: Sept. 5, 2023, 8:01 p.m.
A rare species in Belgium, but probably overlooked. More easily found as a case on Salix.
The fore wings are dark grey ochreous.
Wing span is 10–13,5 mm.
The antennae are ringed till over half of there length.
The caterpillar makes a composite leaf case of 8–10 mm, it is rather strongly compressed and keeled.
The mouth angle is 30–45°.
See also bladmineerders.be.
Pupation in the case attached at the end of a twig or on the upper surface of a leaf.
The adults are active at sunset and sunrise and sometimes come to light.
The adults fly in one generation a year: from late June towards the end of July.
Mostly on several species of Salix, sometimes on the leaves of Myrica gale, even also Betula.