Last modified: Dec. 16, 2023, 2:53 p.m.
A very rare and local species throughout Belgium.
Native
Wingspan: 7,5–10 mm. 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.
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.
The most important food plant is Carpinus betulus, but also on: Betula, Corylus or sometimes Alnus.