Distribution and Abundance: Very local.

Primary Habitat: Woodland.

Flight Period: All known records are in July.

Localities: Castor Hanglands and Helpston.

Observations: The Helpston records date from the 1980’s and those from Castor Hanglands from the early 1990’s. R. E. M. Pilcher writing in his unpublished paper, “The Lepidoptera of Castor Hanglands and Ailsworth Heath 1911-1960,” has endorsed this species, “Not since last war.” I have used this date as guidance to the first record. 

L.O.N.: Unrecorded.

First Record: Pre 1946, Pilcher.