Hantsmoths

Local in scrub and heathland throughout much of Britain and Ireland. In Hampshire there are scattered records in the south and north-east of the county, notably at Botley Wood and at Fleet, but generally uncommon in the north of the county and on the Isle of Wight, although perhaps under-recorded since the extent of known records correlate with those areas in which the recording effort is concentrated. Wingspan 7-9 mm. Imago can be separated from other similar Incurvariidae by its small size, but often recorded in the larval stage, the mines of which are distinctive. Larva mines leaves of Birch, living within a movable case, subsequently feeding in the fallen leaves. The mines are described in the following link:
leafmines.co.uk
.