Local on sea cliffs and rocky areas by the sea, from the Isle of Wight westwards to north Wales. In Hampshire and on the Isle of Wight found mainly on the coasts of the Island, where it is locally common. Very rare on the mainland, but occasional wanderers have been found some distance inland. Wingspan 35-42 mm. Quite variable, with specimens from the Isle of Wight larger and paler than elsewhere in Britain; resembles Turnip Moth A. segetum
and Heart and Club A. clavis
, as well as the rare immigrant Great Dart A. crassa
. Larva feeds on Rock Sea-spurrey and Thrift.