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 2 (0.7%) of the 270 2km squares of Huntingdonshire.
Last recorded in July 2019
Recorded date range (Adult): 15 June to 25 July