November Moth Geometridae

Epirrita dilutata (Denis & Schiff., 1775)

Description: Wingspan 38-44mm.

Similar Species: Adults quite variable, although specimens of this species tend to be a paler grey than the Pale November Moth, but this is not conclusive. Cross lines are often not as well defined. Worn specimens should be checked to confirm identification.

Key Identification Features:

Sets:  male upperside

Flight Period: From late September to the end of November.

Status: The most common species of this genus. Reliably recorded from many localities in southern counties but more localised further north. More frequently encountered that the Pale November Moth E. christyi.

Ecology: An autumn-flying species found in a variety of upland and lowland habitats such as, woodlands, fens, heaths and bogs. Adults rest among the foliage, on the trunks of trees and occasionally fence posts. They are attracted to light in moderate numbers. The larvae can be found from April to June on a variety of trees including oak Quercus spp., birch Betula spp., Blackthorn Prunus spinosa, Hawthorn Crataegus monogyna, and apple Malus spp. It overwinters as an egg.

World Distribution: Throughout Europe including Scandinavia.

Bradley & Fletcher number: 1795 Agassiz number: 70.107

Additional information:

UK Moths account


 Thompson, R. S. & Nelson, B., 2003 (Oct 2). [In] The Butterflies and Moths of Northern Ireland