Davey, P., 2009: A widespread species in south-east Britain, becoming scarce further north, the larva feeding on hawthorn (Crataegus monogyna), blackthorn (Prunus spp.), sallow (Salix spp.), apple (Malus spp.), wild rose (Rosa canina) and other deciduous trees and shrubs. "There are, in my opinion, two methods of distinguishing this species from the Grey Dagger2284 with absolute certainty: breeding from larva, and dissecting out the genitalia. Anything less than either method leads to error."... Read More

	Determination by Genitalia Examination (gen. det.) Required

Recorded in 5 (13%) of 40 10k Squares. First Recorded in 1995. Last Recorded in 2018. (Data up to end 2019) Additional Stats

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