common in many areas of Belgium.
larvae live gregariously in a slight web, on the leaves of Sedum
telephium and related cultivars, possibly also on other
plants. Pupation in a cocoon amongst leaf-litter or spun up under a
flower-head of the foodplant.
adults fly in two generations; from end of April till May, and again during July and August. In
Belgium most specimens have been observed in July. They occasionally
come to light.
Antwerpen, Viersel, 23 April 2005.
(Photo © Maarten Jacobs)