A rare Red Data Book species on mountains between 600 m and 850 m in a few localities near Braemar, Aberdeenshire and possibly elsewhere. Unlikely to be recorded in Hampshire or on the Isle of Wight. Wingspan 22-33 mm. Day-flying, this species is distinguished by the strongly haired thorax and abdomen, the thinly scaled wings and translucent coloration, the montane habitat is also a useful guide to its identification (MBGBI Vol 2). Larva feeds on Crowberry and Bilberry, over-wintering at least once.