Firethorn Leaf Miner Phyllonorycter leucographella
Wingspan 7-9 mm.
Discovered in Essex in 1989, this species has spread rapidly northwards through England to parts of north Yorkshire, and is now fairly common in gardens and other suburban habitats.
As a larva, it mines the leaves of rosaceous bushes, but mainly those of firethorn (Pyracantha). It forms a blotch in the centre of a leaf, leaving a thin membrane through which the larva can be seen, being whitish with black blotches.
Having a number of generations, the adults can be found between April and October, and resemble other Phyllonorycter species, with a buff ground colour and whitish 'chevrons'.