The most frequent form of this species, f. unidentaria, has a blackish-grey central cross-band. The other form has a reddish-brown band and can be very similar to the Red Twin-spot Carpet. See the Red Twin-spot Carpet for details of the differences.
Pupates in plant debris.
Gardens, woodland, hedgerows, fens, moorland and coastal sand-dunes.
Recorded in 37 (13.7%) of the 270 2km squares of Huntingdonshire.
Last recorded in August 2019
Recorded date range (Adult): 16 April to 12 September