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Butterflies of California -- Satyrium tetra

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Butterflies of California

Mountain Mahogany Hairstreak (Satyrium tetra)
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Mountain-Mahogany Hairstreak (Satyrium tetra [W. H. Edwards])

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

Identification: One short hindwing tail on males, long tail on female hindwing; may be missing. Upperside brown-gray. Underside is olive-gray with ashy overlay. Postmedian line white; sometimes faint or absent. Spot near tail is gray-blue.

Life history: Males perch on hilltop shrubs or valley host plants to watch for females. Eggs are laid on twigs or leaves, singly or in small groups. Eggs hibernate until spring; caterpillars eat leaves.

Flight: One flight from June-July.

Caterpillar hosts: Mountain-mahogany (Cercocarpus montanus) in the rose family (Rosaceae).

Adult food: Nectar from wild buckwheat and others.

Habitat: Mixed woodlands, chaparral.

Range: Southern Oregon and California west of the deserts through San Diego County into Baja California Norte; in the Carson Range of western Nevada.

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.

References:

Brown, J. W., Real, H. G., and Faulkner, D. K. Butterflies of  Baja California. 
    1992. Lepidoptera Research Foundation,  Inc., Beverly Hills, CA. 129 pages, 
    8 color plates.

Emmel, T. C. and J. F. Emmel. 1973. The butterflies of southern California. Science 
    Series 26. Natural History Museum of Los Angeles County, Los Angeles, California. 
    148 pages, 10 color plates.   

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

State and Regional References:

Brown, J.W., Real, H.G., and D.K. Faulkner. 1992. Butterflies of Baja 
     California. Lepidoptera Research Foundation, Beverly Hills, Calif.

Comstock, J.A. 1927. Butterflies of California. Privately published, Los 
     Angeles, Calif. [Facsimile available from 	Entomological Reprint 
     Specialists, Los Angeles, Calif.]

Dameron, W. 1997. Searching for butterflies in southern California.
     Flutterby Press, Los Angeles, Calif.

Emmel, T.C. Editor. 1998. Systematics of western North American butterflies.
     Mariposa Press, Gainesville, Florida.

Emmel, T. C. and J. F. Emmel. 1973. The Butterflies of Southern California. 
     Natural History Museum of Los Angeles County Science Series No. 26.

Garth, J.S. and J.W. Tilden. 1986. California Butterflies.  California Natural
     History Guide 51. University of California Press, Berkeley and Los 
     Angeles.
     
Langston, R.L. 1981. The Rhopalocera of Santa Cruz Island, California. Journal
     of Research on the Lepidoptera 18: 24-35.     

Miller, Scott E. 1985. Butterflies of the Califorenia Channel Islands. Journal
     of the Research on the Lepidoptera 23: 282-296.     

Opler, Paul A. 1999. Peterson Field Guide to Western Butterflies, revised 
     edition. Houghton Mifflin Co., Boston, Mass.

Orsak, L.J. 1977. The Butterflies of Orange County, California. Museum of 
     Systematic Biology, University of california, Irvine.

Stanford, R.E. and P.A. Opler. 1993. Atlas of Western USA Butterflies. 
     Privately published, Denver, Colo.

Steiner, J. 1990. Bay Area Butterflies: The Distribution and Natural History 
     of San Francisco Region Rhopalocera. Hayward, Calif.: Hayward State 
     University, Masters Thesis.

Tilden, J.W. and A.C. Smith. 1986. A Field Guide to Western Butterflies. 
     Houghton Mifflin Co., Boston, Mass.

Tilden, J.W. 1965. Butterflies of the San Francisco Bay Region. California 
     Natural History Guide 12. University of California Press, Berkeley and 
     Los Angeles.
Mountain Mahogany Hairstreak (Satyrium tetra)
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