Davey, P., 2009: A generally distributed species in Britain, the larva feeding on oak (Quercus spp.). In Dorset, the moth is locally common, being found most often in old oak woods. The peak of the second brood is, on average, nearly three times larger than that of the first brood. There is a high incidence of colour variation within the second brood, with a tendency for the terminal area of the forewing to be suffused with grey; this may be related to the higher temperatures experienced by the insect during its development. The following light trap records were presumed to have been dispersed individuals from oak woodland or possibly immigrants from abroad: West Bexington, on 12 August 2003, 4 August 2004, 9 August 2004 (R Eden), Wyke Regis, on 17 August 2003 (D Foot), Portland, on 24 August 2001 (M Cade).

Recorded in 37 (93%) of 40 10k Squares.
First Recorded in 1934.
Last Recorded in 2019.
(Data up to end 2019)