Widely distributed and locally common throughout much of Britain and more locally in Ireland. In Hampshire patchily distributed and found mainly in the southern woodlands and Dorset borders, and infrequent in the New Forest and central Hampshire. Wingspan 4.7-5.2 mm. Records of adult moths require dissection for confirmation. Larva mines leaves of Birch, over-wintering as a pupa. The mines are described in the following link:
leafmines.co.uk.