Pale Brindled Beauty Geometridae

Phigalia pilosaria (Denis & Schiff., 1775)

Description: Wingspan 45-50mm. Adult males are generally greyish-green in colour with irregular cross-lines. Males have thick hairy bodies with large comb-like antennae. The females are wingless.

Similar Species: Brindled Beauty

Key Identification Features:

Sets:  male upperside female upperside

Flight Period: From early February to late March, with occasional individuals persisting into April.

Status: Widely distributed in most counties but largest populations appear to be in sites in the Lough Neagh basin.

Ecology: An early species found mainly in woodland, bogs, and heaths. Adult males are attracted to light in moderate numbers in early spring. The moth may occasionally be found by day at rest on the trunks of trees. The larvae feed throughout late spring and early summer on a variety of trees including, oak Quercus spp., birch Betula spp., Hawthorn Crataegus monogyna, willow Salix spp. and Blackthorn Prunus spinosa. It overwinters in the pupal stage.

World Distribution: Across central Europe east to the Urals.

Bradley & Fletcher number: 1926 Agassiz number: 70.247

Additional information:

UK Moths account

Caterpillar: 

 Thompson, R. S. & Nelson, B., 2003 (Oct 2). [In] The Butterflies and Moths of Northern Ireland
http://www.ulstermuseum.org.uk/lepidoptera/species.asp?item=6017

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