Local in woodland and rough meadows throughout much of the British Isles. In Hampshire cases can be found in woodland, on rocks and old walls, and are widespread and common on the mainland, although there are no recent record from the Isle of Wight. Wingspan male 15-20 mm, female wingless. The adult moths are seen occasionally, but most records are of larval cases. Larva feeds on various lichens, dead insects and decaying vegetable matter, living within a movable case, over-wintering once or twice. The case is constructed of silk coated with lichen, fine sand and bark, and can be found.