Range & Status
Formerly widespread across southern England, but has become very rare.
Discovered at Ruan Lanihorne in 1978 (Foster, 1996) and still there in 2003.
Habitat & Ecology
Feeds on the fresh foliage of Alder Alnus glutinosa in late spring.
The only Cornish locality lies within an important SSSI. This species is listed on the UK BAP Priority Species list (2007).