Frosted Green

The forewings are marbled with black and white markings. They fly at night and are attracted to light.

The caterpillars can be found from late May to mid-July feeding at night and resting on the underside of a leaf during the day. They overwinter as pupae under moss at the base of a tree in leaf litter or soil.

Size and Family

• Family – Thyatridae
• Medium Sized
• Wingspan Range – 30-34mm

Conservation status

• UK BAP: Not listed
• Local (only found in some areas)

Caterpillar Food Plants

Pedunculate Oak (Quercus patraea) and Sessile Oak (Quercus robur), possibly also Turkey Oak (Quercus cerris)

Habitat

Well-establish broadleaved woodland with mature trees. Also sometimes oak hedgerows in well wooded areas.

Distribution

• Countries – England and Wales
• Locally distributed in southern England north to Lincolnshire. And throughout Wales.