Distribution and Abundance: Common.

Primary Habitat: Grassland.

Flight Period: Single brooded in September and October.

Observations: Dark forms of the moth predominate in most of the Northamptonshire populations that I have seen. The pale ochreous and intermediate forms seem to be fairly common and rufous forms rare. The moth can be very plentiful at light as in 2001 at the static Pitsford Reservoir m.v. light traps where 430 examples were taken between 10 September 2001 and 7 October 2001.

L.O.N.: 1907. Many localities. Fairly common at sugar.

First Record: 1882, Hull & Tomalin.