Wingspan 17 to 23mm. The wings are dark with yellow hairs covering most of them and a pattern of thin bluish, metallic lines.
Open woodland and orchards. The larvae feed on a variety of tree leaves which they roll up to hide in as they feed.
Fairly common in the southern half of Britain, but rarer in Scotland. Common in Nottinghamshire and at Netherfield Lagoons.
Best time to see
June to July.