Nationally scarce (Nb) in saltmarshes on the south and east coasts of England, with records west to Devon and north to Yorkshire. In Hampshire and on the Isle of Wight locally common along the coast, especially around Langstone Harbour. Wingspan 16-23 mm. Larva feeds within stems of Sea Club-rush.
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