Nationally scarce (Na) in pine woodland, Calluna heathland and moorland in two well-separated areas: the Pennine Range, extending westwards into Lancashire and Cheshire and just into Wales in Flintshire, and southwards to northern Warwickshire; and in western central Scotland and the Scottish Highlands (MBGBI Vol 3). Unlikely to be recorded in Hampshire or on the Isle of Wight. Wingspan male 11-13 mm, female 10-12 mm. Larva mines leaves of Cowberry, living within a movable case, over-wintering twice.