Uncommon local resident of pools and marshes.

Alisma plantago-aquatica with larva feeding in September/October in the flower-stem. Overwintering and pupating in situ; tiny holes in the dead stems in winter indicate the presence of larvae.

	Determination by Genitalia Examination (gen. det.) Required

Recorded in 9 (6%) of 140 10k Squares.
First Recorded in 1892.
Last Recorded in 2022.
(Data up to end 2022)