Wingspan 6 to 7 mm. Adults are dull brownish with a speckled appearance, especially noticeable near the wingtips. They have a yellowish head and whitish eyecaps. The larvae create a distinctive blotch mine in the leaves of Apple. The larva cuts an exit hole on the underside of the leaf, which distinguishes the mine from that of Ectoedemia atricollis.

Adult Leafmine

Adult: Unless identified by a recognised expert, a photo is required and the specimen should be examined with a microscope. In the comments box, state the key or ID method used and describe the size and identifying characters.

Leafmine: Unless identified by a recognised expert, a photo is required. If the photo doesn't show the key ID features then in the comments box describe the size and identifying characters you have observed.

Where Apple is present.

The adults fly in May. Leafmine can be seen during June and July.

Believed to be fairly frequent and widespread in Britain, but under recorded due to its small size and difficulty of identification. In the Butterfly Conservation's Microlepidoptera Report 2011 this species was classified as common.

Occasional in Leicestershire and Rutland.  Usually recorded from the leafmines on Apple.

http://www.leafmines.co.uk/html/Lepidoptera/B.pulverosella.htm

https://bladmineerders.nl/parasites/animalia/arthropoda/insecta/lepidoptera/monotrysia/nepticuloidea/nepticulidae/bohemannia/bohemannia-pulverosella/