rather rare species in Belgium.
larvae live gregarious in a web. They feed on the leaves of Salix
alba, or occasionally, on Salix cinerea.
Pupation in the web or on the trunk.
adults fly in July and August. They come to light.
Brabant, Sint-Katherina-Lombeek, 03 July 2009.
reared imago from larvae on Salix
(Photo © Serge Van Cleynenbreugel)