Common in gardens, saltmarshes, woodland and grassland throughout much of the British Isles. In Hampshire and on the Isle of Wight fairly common to common on waste ground and in woods and large gardens. Wingspan 21-23 mm. The main confusion species is
Currant Pug E. assimilata, but Wormwood Pug is larger, with more distinct markings. Larva feeds on Mugwort, Yarrow, Common Ragwort, Wormwood, Sea Aster, Goldenrod and Canadian Goldenrod, over-wintering as a pupa.