Common in orchards and woodland, and around old buildings, dry-stone walls and sea cliffs throughout the British Isles. Widespread and common in Hampshire and on the Isle of Wight. Wingspan 23-31 mm. Dentate antemedian fascia extends from costa to dorsum, in contrast to superficially similar Marbled Green C. muralis
, in which antemedian fascia falls short of dorsum. Larva feeds on various lichens, often on walls and tree trunks.