Common in oak woodland and areas with scattered oaks throughout Britain, widespread but apparently less frequent in Ireland. In Hampshire and on the Isle of Wight widespread and common. Wingspan 7-9 mm. Imago fairly regular at light, but more frequently recorded in the larval stage, when mines are relatively easy to find where they are present. Larva mines leaves of deciduous oaks Quercus, 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