Common in rough grassland, hedgerows and gardens throughout the British Isles. In Hampshire and on the Isle of Wight locally common, and often found during the late afternoon and evening flying around the foodplants. Wingspan 10-14 mm. The curved, narrow, pale or whitish yellow medio-dorsal blotch of the forewing is characteristic [Bradley]. Larva feeds within roots of Yarrow, Sneezewort and Tansy.
The abundance in each month is indicated as follows:
No records Very occasional Irregular Uncommon Off-peak, but not unusual Off-peak, but not unusual Main flight time