Local wherever the foodplant occurs, throughout much of the British Isles. In Hampshire widespread but rather uncommon; there have been no recent records on the Isle of Wight. Wingspan 10-15 mm. Larva feeds on Ash, living within a silken case, often several together.
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