common species throughout Belgium, sometimes a pest in parks and
larvae live gregariously in webs spun in bushes of Crataegus
or Prunus spinosa. They are covered with urticating hairs. Hibernates as a small larva in a tough communal web on a food plant stem.
adults fly in one generation a year; from late May towards mid August. They come to light.
Antwerpen, Kapellen, 15 July 2004.
(Photo © Chris Steeman)