Local in beech woodland throughout England and Wales. Frequent where beech grows in the New Forest and on the chalk in Hampshire and the Isle of Wight, although rare elsewhere in these counties. Wingspan male 26-32 mm, female 30-35 mm. Main confusion species is Oak Hook-tip W. binaria, but smaller and with a broad dark median fascia across the forewing. Larva feeds on Beech, 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