Last modified: Dec. 6, 2024, 4:37 p.m.
A very rare and local species throughout Belgium.
Native
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 this 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.