Common in marshes, river-banks and other damp areas in England and Wales, with scattered records in Scotland; rare in Ireland. In Hampshire and on the Isle of Wight locally common in the south-east of the county and around Fleet, and probably under-recorded elsewhere. Wingspan 7.5-8 mm. Imago fairly regular at light, but more frequently recorded in the larval stage, when mines are relatively easy to find where they are present. Larva mines leaves of smooth-leaved Salix species, such as Osier and Crack Willow, has also been recorded on Aspen, over-wintering as a pupa in a cocoon.