Local on moorland, damp heathland and mosses throughout much of northern England and Scotland. Unlikely to be recorded in Hampshire or on the Isle of Wight. Wingspan 12-16 mm. The whitish grey ground colour of the forewing and the almost triangular basal patch, which is constricted or interrupted below its apex, are characteristic [Bradley]. Larva feeds on Bilberry and Bog Bilberry, living within a spun or rolled leaf, over-wintering in a cocoon.