Characteristic sharply angled median fascia edged with dark ground colour.
Larvae create a narrow mine downwards until reaching water surface, when either returns upward or changes leaf.
borders of ponds, lakes and slow moving streams where foodplant grows in standing water.
Recorded in 4 (1.5%) of the 270 2km squares of Huntingdonshire.
Last recorded in April 2021
Recorded date range (Adult): 24 May to 25 July
Recorded date range (Larva/Leafmine): 15 April to 15 April