This moth has a narrow forewing with a purplish-bronzy sheen and a whitish fascia which narrows towards the costa.
The larvae produce a contorted narrow gallery which initially encircles the spot the egg was laid, but which then forms a straight but irregular mine.
Recorded in 54 (20%) of the 270 2km squares of Huntingdonshire.
Last recorded in September 2020
Recorded date range (Adult): 19 July to 25 July
Recorded date range (Larva/Leafmine): 26 June to 28 November