North American Butterflies and Moths List

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Butterflies of North America

Behr's Hairstreak (Satyrium behrii)
JPG -- species photo

Behr's Hairstreak (Satyrium behrii [W. H. Edwards])

Wing span: 1 - 1 1/4 inches (2.5 - 3.2 cm).

Identification: Tailless. Upperside orange with wide brown borders on forewing. Underside of male brown, female brownish-white; both with postmarginal and submarginal lines of irregular small black spots.

Life history: Males perch on shrubs to watch for receptive females. Eggs are laid singly on leaves or twigs of host plant; they hibernate and hatch the following spring. Caterpillars eat leaves.

Flight: One flight from June-July.

Caterpillar hosts: Antelope brush (Purshia species) and mountain- mahogany (Cercocarpus montanus) in the rose family (Rosaceae).

Adult food: Flower nectar.

Habitat: Sagebrush scrub, juniper-pinyon woodland, brushland, pine woodland, chaparral.

Range: Local within its range. Western Texas north and west through New Mexico, Arizona, and southern California to British Columbia.

Conservation: Not usually required.

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

Management needs: None reported.


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

Behr's Hairstreak (Satyrium behrii)
distribution map
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