Common in woodland, hedgerows and gardens throughout England and Wales. Widespread in Hampshire and on the Isle of Wight, where often seen during the day in deciduous woodland in small numbers. Wingspan 18-21 mm. Day-flying, but may come to light. Unmistakable. Larva feeds within the bark of rotten wood.
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