Key to Text Moths of Northamptonshire

Key to Map
  Large Thorn Ennomos autumnaria  
         
  Status: Resident and possible migrant.

Distribution and Abundance: Local.

Primary Habitat: Woodland.

Flight Period: Single brooded in September and October.

Localities: Lower Benefield, Ring Haw, Collyweston Great Wood and Castor Hanglands.

Observations: The above localities are all post 1990 and apart from Castor Hanglands are records of singletons. In the north-east of the county where it appears to be spreading there are additional single records from Warmington, Werrington and Helpston. In 2003 singletons were taken on 23 August and 18 September in an m.v. garden light trap at Chelveston where the moth has been recorded in small numbers in subsequent years. At present Castor Hanglands is probably still the best-known site.

First Record: 1947, Cransley Reservoir, Robinson.