A not so common species throughout Belgium.
larva lives on several deciduous trees like Fagus sylvatica, Ulmus glabra and Ulmus
procera. Hibernates as pupa underground.
adults fly in one, sometimes two generations a year; from May till late
August. They are active from early dusk and later come to
Antwerpen, Viersel, 12 July 2005.
(Photo © Maarten Jacobs)