This species has a unicolourous dark form which is found later in the year. This form is recognized as a distinct species Prays ruficeps in some countries.
Recorded in 56 (20.7%) of the 270 2km squares of Huntingdonshire.
Last recorded in September 2019
Recorded date range (Adult): 18 April to 26 September
Recorded date range (Larva/Leafmine): 16 May to 23 October