Last modified: Nov. 9, 2023, 1:29 p.m.
A fairly common species throughout Belgium, more observed in the northern part of the country.
Native
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 plant.
The adults come to light and sugar.
The 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.
The larva lives on Quercus or Betula.