Nationally scarce (Nb) on south-facing hillsides, sea cliffs, quarries and sand-dunes, along the coasts of England and Wales from Dorset to Cornwall, northwards to the Inner Hebrides, including the western coast of Ireland and Scotland; also inland in a few sites in southern and northern England. In Hampshire there are recent records only from Broughton Down and Porton Down, although one was found in Andover in June 2009. There have been no recent records from the Isle of Wight. Wingspan 16-18 mm. The most likely confusion species is Channel Islands Pug E. ultimaria
, which see for differences. Larva feeds on flowers of Wild Thyme, over-wintering as a pupa.