'Glossary' opens an
Flight period: Mid-April and May, then August
Forewing: 4.74 to 6mm.
Habitat: Wooded areas with deciduous oak.
Larva: Feeds on oak from May until July and
September/October, at first in a leaf mine then later in a
curled down 'cone' formed from a section of leaf. It
overwinters as a pupa.