This micro moth has a forewing length of just 4mm and is bright orange with white chevron markings. It is one of the ‘leaf miner’ moths which means its larvae feed within the leaves of the foodplant, leaving characteristic blotches and patterns. Since it was first recorded in 1989 it has spread across most of the British Isles.

The larvae feed on the upperside of the leaf, forming a thin, silvery blister. This species usually has several generations and the larvae from the autumn generation will overwinter in the mine. They also pupate within the mine.

Flight Times

There are a number of generations with adults seen from April to October.

Size and Family

  • Family – Gracillariidae

  • Small sized

  • Wingspan Range – 7-9mm

Conservation Status

  • UK BAP: Not listed

  • Common

Caterpillar Food Plants

The larvae feed mainly on Firethorn (Pyracantha) but also Hawthorn (Crataegus), Rowan/Whitebeam (Sorbus) and Apple (Malus).

Habitat

They are found in gardens and other urban habitats.

Distribution

  • Countries – England, Wales, Scotland, Ireland

  • It is found across most England and Wales, and has quickly expanded its range north and west to include parts of Scotland and Ireland.

Firethorn Leaf Miner - Patrick Clement

Firethorn Leaf Miner

Firethorn Leaf Miner - Patrick Clement

Firethorn Leaf Miner

Firethorn Leaf Miner - Patrick Clement

Firethorn Leaf Miner

Firethorn Leaf Miner - Ben Sale

Firethorn Leaf Miner

Firethorn Leaf Miner (caterpillar) - Patrick Clement

Firethorn Leaf Miner (caterpillar)

Firethorn Leaf Miner (caterpillar) - Patrick Clement

Firethorn Leaf Miner (caterpillar)

Firethorn Leaf Miner (caterpillar) - Patrick Clement

Firethorn Leaf Miner (caterpillar)

Firethorn Leaf Miner (leaf mining) - Lez Round

Firethorn Leaf Miner (leaf mining)