Identification
Unmistakable. Because of its rarity status a quality picture or specimen required for record acceptance.
Life cycle
Overwinters as a pupa just under the ground or in plant debris. Larva are present from mid-July to late September.
Larval foodplants
Bilberry.
Habitat
Open woodland but also moorland and heathland.
Stragglers can be noted away from usual breeding areas.