rare and local species in Belgium.
young larva makes a linear mine in the leaves of Betula
spp., creating an irregular whitish elongate blotch. Later it
out an oval case and drops to the ground. Pupation in the case
adults fly from May to early July. The moths are sometimes active
the day, flying around small birches. They come to light.
Limburg, Kinrooi, 13 May 2005.
(Photo © Maarten Jacobs)