Mottled Beauty Geometridae

Alcis repandata (Linnaeus, 1758)

Description: Wingspan 43-56mm. A variable species with many different colour forms, ranging from pale to dark brown; the degree of mottling varies considerably between individuals with some more heavily marked than others. The banded form ab, conversaria is found chiefly in coastal localities and some inland sites in smaller numbers.

Similar Species: Satin Beauty and Willow Beauty

Key Identification Features:

Sets:  male upperside

Flight Period: Generally from the beginning of June to the end of August, although some individuals can persist well into September.

Status: Widespread and commonly encountered throughout all counties including Rathlin Island.

Ecology: A large species found across a wide variety of habitats especially woodland, heathland, bogs and gardens. Adults come freely to light in good numbers. The larvae can be found from late August to May of the following year on a variety of trees and shrubs including bilberry, hawthorn Crataegus monogyna, birch Betula spp, bramble, oak Quercus spp. and honeysuckle. It overwinters as a larva.

World Distribution: Throughout Europe as far east as Transcaucasia.

Bradley & Fletcher number: 1941 Agassiz number: 70.265

Additional information:

UK Moths account


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