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Frigga Fritillary
Boloria frigga (Thunberg, 1791)
Attributes of Boloria friggaFamily: Brush-footed Butterflies (Nymphalidae) Subfamily: Longwings (Heliconiinae) Identification: Tip of forewing pointed. Wings orange-brown with black markings; darker at wing bases. Underside of hindwing with off-white patch near base of costal margin. Life history: Males patrol in low areas of willow bogs. Hibernation is by nearly full-grown caterpillars. Flight: One brood from late May-early August. Wing span: 1 1/2 - 2 inches (3.8 - 5.1 cm). Caterpillar hosts: Cranberry (Vaccinium) and bog rosemary (Andromeda), perhaps willow (Salix) and dwarf birch (Betula). Adult food: Flower nectar. Habitat: Sedge and sphagnum bogs, arctic tundra. Range: Holarctic. Northern Alaska and northern Canada east to Labrador, south to northern areas of Michigan, Minnesota, and Wisconsin. Isolated populations in Rocky Mountains to Wyoming and southcentral Colorado. Conservation: Not usually of concern, but isolated populations may be of interest at the state or local level. NatureServe Global Status: G5 - Demonstrably secure globally, though it may be quite rare in parts of its range, especially at the periphery. Management needs: Maintain integrity of bog habitat. | Documented Records for Boloria frigga
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