Distribution and Abundance: Common.

Primary Habitat: General occurrence.

Flight Period: Usually single brooded, mainly seen in the spring after hibernation and in late summer as the main brood.

Observations: Records extend to all months of the year due to the moth being seen over-wintering in buildings and outhouses. In July 1970, I found several full grown caterpillars resting conspicuously on a small white willow growing on the edge of Pitsford Water.

L.O.N.: 1907. Everywhere. Common.

First Record: 1842, Clark.