Distribution and Abundance: Local.

Primary Habitat: Woodland.

Flight Period: Single brooded in July and August.

Localities: Boughton Park, Short Wood, Bretton and Helpston.

Observations: Although the species has markedly declined with the loss of the large elms that supported a good part of the population, it is now almost certainly under recorded. Many of the roadside hedgerow and small spinney English and wych elms that are now the moths’ primary habitat are in unsuitable places for surveying with m.v. lights; this has acted to the detriment of records. It is sometimes more expedient to beat these elms for the caterpillar. This was successful on 2 June 1997 on the English elm hedges at Glendon.

L.O.N.: 1907. Several localities. Common.

First Record: 1882, Hull & Tomalin.