Common in oak woodland throughout England and Wales. Widespread and common in Hampshire. Not recorded from the Isle of Wight since 1856. Wingspan 10-12 mm. Superficially similar to the very rare immigrant T. flavimaculella, which see. Larva feeds on Oak, living between leaves spun together with silk, 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