Butterflies and Moths of North America

collecting and sharing data about Lepidoptera

Edwards' Fritillary
Speyeria edwardsii (Reakirt, 1866)

Family: Nymphalidae
Subfamily: Heliconiinae
Identification: Upperside of both wings tawny orange with black border and markings. Underside green or gray-green with narrow buff submarginal band and metallic silver markings.
Wing Span: 2 1/2 - 3 3/8 inches (6.3 - 8.6 cm).
Life History: Males patrol in open areas for females. Females lay eggs on litter near violets. First-stage unfed caterpillars hibernate; in the spring they eat host plant leaves.
Flight: One brood from late June to early September.
Caterpillar Hosts: Violets including Viola nuttallii and V. adunca.
Adult Food: Flower nectar.
Habitat: Short-grass prairie, foothills, meadows, fields, road edges.
Range: Short-grass prairie and western Rocky Mountains from southern Alberta east to the central Dakotas and western Nebraska, then south to northeastern New Mexico.
Conservation: Not usually required.
NCGR: G5 - Demonstrably secure globally, though it may be quite rare in parts of its range, especially at the periphery.
Management Needs: None reported.
Comments: NULL
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