Nationally scarce (Nb) on heathland, chalk downland and sand-dunes throughout much of southern England. In Hampshire, two likely migrant specimens are know, the first recorded at Southsea on 8 August 1997, originally thought to be
O. laetus but re-determined on dissection, and a second taken at light in Chandlers Ford in 2018. Not recorded from the Isle of Wight to date. Wingspan 15-22 mm. Can be separated from
O. laetus only by dissection of the genitalia. Larva feeds on Mouse-ear Hawkweed, Marsh Hawk's-beard and Smooth Hawk's-beard, living within a spinning.