Lyonetia clerkellais a tiny moth (wingspan 7 to 9 mm) with a silvery appearance but very attractively patterned when seen under magnification. 

The larva produces a leafmine on a number of species, especially Cherry, Apple, Rowan, Hawthorn, Blackthorn and other trees and shrubs in the Rosaceae family.  It is also commonly found on Birch. The mine is long smoothly curved gallery with frass in a central line; older mines look whitish. The larva is long and slender. It has a segmented body and 6 dark feet.

Adult Leafmine

Gardens and orchards.

The adults fly at night and are attracted to light. The species has two or more broods, with the later ones overwintering and reappearing in the spring.

This tiny species attacks a variety of fruit trees including Apple with the larvae forming narrow, winding 'leaf mines'.

Common throughout Britain. In the Butterfly Conservation’s Microlepidoptera Report 2011 this species was classified as common.

Common in Leicestershire and Rutland.

http://www.leafmines.co.uk/html/Lepidoptera/L.clerkella.htm

https://bladmineerders.nl/parasites/animalia/arthropoda/insecta/lepidoptera/ditrysia/yponomeutoidea/lyonetiidae/lyonetia/lyonetia-clerkella/lyonetia-clerkella-larva/