Forewing and hindwings of this species both have a prominent central black dot. The leading edge of the forewing is curved near the tip and the second cross-line beyond the black dot usually curves around it. The species is very variable in the intensity of the markings and there is also a dark form (f. fimbriolata).
Pupates in plant debris.
Broadleaved woodland, conifer plantations, hedgerows and mature gardens.
Recorded in 119 (44.1%) of the 270 2km squares of Huntingdonshire.
Last recorded in August 2021
Recorded date range (Adult): 30 May to 14 October