In addition to the normal form there is a well-marked variation, f. fibrosa, which is just as frequent, as well as several intermediate forms.
Pupates in leaf litter.
Fens, marshes, riversides, margins of lakes and ditches.
Recorded in 27 (10%) of the 270 2km squares of Huntingdonshire.
Last recorded in August 2018
Recorded date range (Adult): 01 July to 10 September