Recorded infrequently through accidental importation in oak from North America, at Carnforth, Lancashire in the 1900s and in Edinburgh in the 1960s in oak imported from America for making barrels. Not recorded in Hampshire or on the Isle of Wight to date. Wingspan 52-58 mm. Similar to Buff Ermine Spilosoma luteum but larger with longer forewing. Larva feeds on Oak; no evidence of breeding in the UK.