Local in woodland and areas with scattered oaks throughout much of the British Isles. In Hampshire and on the Isle of Wight widespread and locally common, but perhaps under-recorded in the north of the county away from the M3 corridor. Wingspan 6-7 mm. Larva mines leaves of Oak, preferring the foliage of saplings and stooled oaks, over-wintering as a pupa in a cocoon.
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