The larvae mine the leaves of Aspen (Populus tremula), forming a triangular blotch.
Recorded in 30 (11.1%) of the 270 2km squares of Huntingdonshire.
Last recorded in November 2022
Recorded date range (Adult): 03 November to 03 November
Recorded date range (Larva/Leafmine): 14 September to 28 November