rather common species throughout Belgium.
larvae live gregariously on the leaves of Barbarea vulgaris
or other species of Cruciferae. They hibernate in their cocoons.
Pupation in a cocoon on the underside of leaves or on the ground
adults fly from mid June till mid September. They fly at dusk and come
Antwerpen, Kapellen, 25 July 2005.
(Photo © Chris Steeman)