Distribution and Abundance: Common.

Primary Habitat: Woodland.

Flight Period: Single brooded in September and October.

Observations: The moth can be plentiful at sugar as on 14 September 1990 at Geddington Chase. The form ab. borealis is fairly common in the county.

L.O.N.: 1907. Near Kettering, Geddington Chase, Harleston. Sometimes abundant at sugar.

First Record: 1843, Whitwell.