Common in broad-leaved woodland, heathland, moorland, fens and gardens throughout the British Isles. Widespread and fairly common in Hampshire and on the Isle of Wight. Wingspan 37-48 mm. Apart from the occasional melanic individual, generally unmistakable. Larva feeds on Downy and Silver Birch, Alder and Grey Willow, over-wintering as a pupa.
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