not so common species throughout Belgium.
larva lives on Quercus and Betula.
Hibernates as a small larva on or near a bud of the food plant. Pupates
in a tough, boat-shaped cocoon on the underside of a leaf of the food
adults fly from late May towards early August in one generation. In
favourable years a small partial second generation occurs during
September, but it's seldom recorded. They come to light and sugar.
Limburg, Kinrooi, 23 June 2005.
(Photo © Chris Steeman)