Common in urban gardens and parks, open woodland, fens, hedgerows, heathland and moorland throughout the British Isles. Widespread and common in Hampshire and on the Isle of Wight. Wingspan male 35-38 mm, female wingless. Male day-flying, occasionally coming to light. The main confusion species is
Scarce Vapourer O. recens, which differs in having a white subapical spot. Larva feeds on various broad-leaved trees and shrubs, including Birch, Hazel, Sallow, Hawthorn, Blackthorn, Elm, Lime and Oak, over-wintering as an egg.