Northern Marble Euchloe creusa (Doubleday, [1847]) | Butterflies and Moths of North America

Family: Pieridae

Subfamily: Pierinae

Identification: Pale markings at tip of upperside of front wing; cell bar narrow. Fore- and hindwing bases dark on the uppersides. Underside of hindwing with considerable "fractured" dark marbling.

Wing Span: 1 3/8 - 1 5/8 inches (3.5 - 4.2 cm).

Life History: Females lay single eggs on host plant flower buds; caterpillars eat flowers and fruits. Chrysalids hibernate.

Flight: One flight from May-July.

Caterpillar Hosts: Plants of the mustard (Brassicaceae) family.

Adult Food: Flower nectar. Specific plants not reported.

Habitat: Mountains, rocky outcrops, trails, roadsides.

Range: Alaska south and east to British Columbia, Alberta, and Saskatchewan. Northern Montana in Glacier National Park.

Conservation: Widespread in Alaska, but very restricted in lower 48 states.

NCGR: G5 - Demonstrably secure globally, though it may be quite rare in parts of its range, especially at the periphery.

Management Needs: Study habitat requirements and manage accordingly.

Comments: NULL

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