Bog Fritillary (Boloria eunomia [Esper])
Wing span: 1 1/4 - 1 3/4 inches (3.2 - 4.5 cm).
Identification: Upperside orange-brown to tan with dark markings. Underside of hindwing orange with light nonmetallic bands; postmedian row spots are white bordered with black.
Life history: Males patrol in wet areas for females. Eggs are laid in groups of 2-4 under host plant leaves, which the caterpillars eat. Third- and fourth-stage caterpillars overwinter.
Flight: One brood from June-August.
Caterpillar hosts: Willow (Salix), alpine smartweed (Polygonum viviparum), and violets (Viola).
Adult food: Nectar from flowers including Labrador tea and goldenrod.
Habitat: Bogs, moist tundra, willow seeps.
Range: Alaska and most of Canada south to the bordering United States including northern Maine and the northern Great Lakes region; south in the Rocky Mountains to Colorado.
