North American Butterflies and Moths List

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Butterflies of North America

Northern Marble (Euchloe creusa)
JPG -- species photo

Northern Marble (Euchloe creusa [Doubleday])

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

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.

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.

Management needs: Study habitat requirements and manage accordingly.

The Nature Conservancy Global Rank: G5 - Demonstrably secure globally, though it may be quite rare in parts of its range, especially at the periphery.

References:


Opler, P. A. 1968. Studies on nearctic Euchloe. Part 5.  Distribution. 

     Journal of Research on the Lepidoptera 7(2):  65-86.



Opler, P. A. 1969 (1970). Studies on nearctic Euchloe. Part 6. 

     Systematic of adults. Journal of Research on the Lepidoptera 8(4): 

     153-168.



Opler, P. A. 1974. Studies on nearctic Euchloe. Part 7.  Comparative 

     life histories, hosts, and the morphology of immature stages. Journal 

     of Research on the Lepidoptera  13(1): 1-20.



Scott, J. A. 1986. The butterflies of North America. Stanford  University 

     Press, Stanford, Calif. 583 pages, 64 color plates.



Tilden, J. W. 1986. A field guide to western butterflies.  Houghton-Mifflin 

     Co., Boston, Mass. 370 pages, 23 color plates.

Author: Jane M. Struttmann

Northern Marble (Euchloe creusa)
distribution map
map legend

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