Butterflies and Moths of North America

collecting and sharing data about Lepidoptera

Carol's Fritillary
Speyeria carolae (dos Passos & Grey, 1942)


Family: Nymphalidae
Subfamily: Heliconiinae
Identification: Upperside bright orange with black markings. Underside of hindwing with inwardly triangular silver spots in marginal row, basal disk red-brown to buffy brown.
Wing Span: 2 3/4- 3 3/8 inches (6.9 - 8.6 cm).
Life History: Males patrol open areas to find females. Females may delay egg-laying until late summer. Eggs are laid singly on litter near violets. First-stage caterpillars overwinter unfed; in the spring they feed on violet leaves.
Flight: One flight from mid-June to September.
Caterpillar Hosts: Charleston Mountain violet (Viola charlestonensis).
Adult Food: Flower nectar.
Habitat: Mountain slopes, foothills, forest openings.
Range: Limited to Charleston Mountains of Clark County, Nevada.
Conservation: All populations should be conserved.
NCGR: G2,G3 - Species imperiled because of rarity (6 to 20 occurrences), or because of other factors demonstrably making it very vulnerable to extinction throughout its range. (Endangered throughout its range). OR very rare or local throughout its range or found locally in a restricted range .
Management Needs: Management plan need to conserve this species, its habitat, caterpillar host plant, and nectar sources.
Comments: NULL