The male is larger than the female and females are flightless, but have been seen gliding to the ground. A melanic form occurs in industrial areas.
Recorded in 79 (29.3%) of the 270 2km squares of Huntingdonshire.
Last recorded in April 2021
Recorded date range (Adult): 21 January to 15 May
Recorded date range (Larva/Leafmine): 14 June to 07 October