Last modified: Jan. 5, 2020, 6:19 p.m.
A very rare and local species throughout Belgium.
The forewings are shiny grey.
The antennae are very dark ringed the first half from the base then obviously alternately dark brown white till the tip.
Wingspan is 7,5–10 mm.
The ground-colour is yellow.
The caterpillars make a large number of relatively small blotch mines. The case is a lob-case and the end is strongly curved downwards. The mouth angle is 45°.
See also bladmineerders.be.
Fully grown cases in August and October. After overwintering the caterpillars don’t eat anymore.
Pupation in the case, usually attached to a trunk just above ground level.
The adults come infrequently to light.
The adults fly in one generation from mid-May to late June.