rare and local species in Belgium. Populations are scarce, because of the Dutch elm disease.
larva lives in a short and stubby case on Ulmus procera and Ulmus minor. Recently the species is also found on Corylus avellana
on several locations, so it seems to be this is a new and recent food
plant. Pupation in the third and final case, attached to a twig or leaf.
adults fly in June and July. They come to light.
Antwerpen, Ranst, 18 June 2005.
(Photo © Leo Janssen)