Common despite its name, in broad-leaved woodland, scrub and gardens throughout the British Isles. In Hampshire and on the Isle of Wight widespread and fairly common, although no doubt under-recorded due to its late season. Wingspan male 40-44 mm, female wingless. The main confusion species is Mottled Umber Erannis defoliaria
, from which male Scarce Umber is perhaps most reliably separated by its rounded termen and more open apical angle, but in most cases the uniformly orange-yellow forewing of Scarce Umber distinguishes from the very much more variable Mottled Umber; female Scarce Umber has short wing stumps, absent in Mottled Umber. Larva feeds on numerous broad-leaved trees and shrubs, over-wintering as an egg.