in many areas in Belgium, though usually not very common.
larva lives in a catkin of Betula spp. It
hibernates full-fed from October in a cocoon spun in a bark crevice.
Pupation in the cocoon.
adults have been observed from mid May till mid June. The moths are
active around Betula trees at dusk and occasionally
come to light.
Limburg, Kinrooi, 15 May 2004.
(Photo © Maarten Jacobs)