Butterflies and Moths of North America

collecting and sharing data about Lepidoptera

Olympia Marble
Euchloe olympia (W.H. Edwards, 1871)


Family: Pieridae
Subfamily: Pierinae
Identification: Underside of hindwing with sparse marbling leaving much white space; pink tinge at upper margin in living butterlfies.
Wing Span: 1 3/8 - 2 inches (3.5 - 5.1 cm).
Life History: Males patrol on hilltops for females. Females lay single egg on flower bud of host plant; caterpillars eat flowers and fruits. Chrysalids hibernate.
Flight: One flight from April-July, early in Texas, later in the north.
Caterpillar Hosts: Various rock cresses (Arabis species) in the mustard family (Brassicaceae).
Adult Food: Flowers of rock cresses, chickweed, phlox, and houstonia.
Habitat: Various open areas including prairies, foothills, lakeshore dunes, shale barrens, meadows, open woodlands.
Range: Southern Canada, central Montana and Colorado, south to central Texas, east through Great Lake states. Isolated populations in Appalachians from Pennsylvania to Tennessee.
Conservation: Protect habitat of isolated populations.
NCGR: G4 - Apparently secure globally, though it might be quite rare in parts of its range, especially at the periphery.
Management Needs: Conserve habitats with host plants and nectar sources.
Comments: NULL

Pollinator Week was June 20-26, 2022!

Butterflies and moths are accidental pollinators of many flowering plants. While most species do not have special structures to carry pollen, they do brush against pollen and transfer it to other flowers.

Did you know? The Eastern Tailed-Blue (Cupido comyntas) flies close to the ground and uses its short proboscis to probe flowers of wild strawberry, white sweet clover, and other low-lying plants.