One of several very similar moths which can be difficult to separate. It is usually necessary to carry out genital dissection for a positive identification.
In general this species is a little larger than S.ambigualis, with heavier markings, a more grey colour and a strongly chequered fringe.
Recorded in 62 (23%) of the 270 2km squares of Huntingdonshire.
Last recorded in August 2021
Recorded date range (Adult): 16 May to 18 September