Common in rough and waste ground throughout England and Wales. Locally frequent in Hampshire and on the Isle of Wight on waste ground amongst its foodplant, with a marked increase in the number of records in recent years. Wingspan 17-26 mm. The shining white, falcate medio-dorsal blotch on the forewing is characteristic [Bradley]. Larva feeds within stems and roots of Mugwort.
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