North American Butterflies and Moths List

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Butterflies of North America

Butterflies of Oregon

Sachem (Atalopedes campestris)
JPG -- species photo

Sachem (Atalopedes campestris [Boisduval])

Wing span: 1 1/4 - 1 5/8 inches (3.2 - 4.2 cm).

Identification: Upperside of male is yellow-orange with a wide brown border and a large squarish black stigma. Female upperside varies from yellow-brown to very dark brown, but always has a square transparent white spot at the end of the forewing cell. Underside of female hindwing is brown with nearly square cream or white spots.

Life history: Males perch on or near the ground during most of the day to wait for receptive females. Females lay single eggs on dry grass blades in the afternoon. Caterpillars feed on leaves and live at the base of grasses in shelters of rolled or tied leaves.

Flight: Three broods from May-November in the north; four to five broods from March-December in the Deep South.

Caterpillar hosts: Grasses including Bermuda grass (Cynodon dactylon), crabgrass (Digitaria), St. Augustine grass (Stenotaphrum secundatum), and goosegrass (Eleusine).

Adult food: Nectar from many flowers including swamp and common milkweeds, buttonbush, dogbane, peppermint, red clover, tickseed sunflower, thistles, New York ironweed, marigold, and asters.

Habitat: Disturbed, open areas such as roadsides, landfills, pastures, meadows, fencerows, yards, parks, and lawns.

Range: Southern United States from Virginia west to California; south through Mexico and Central America to Brazil. Strays and colonizes north to central North Dakota, southern Michigan, Manitoba, and northern Pennsylvania.

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:


Opler, P. A. and G. O. Krizek. 1984. Butterflies east of the Great Plains. Johns 

     Hopkins University Press, Baltimore. 294 pages, 54 color plates.



Opler, P. A. and V. Malikul. 1992. A field guide to eastern butterflies. Peterson 

     field guide #4. Houghton-Mifflin Co., Boston. 396 pages, 48 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:


Dornfeld, E. J. 1980. The Butterflies of Oregon. Forest Grove, 	Ore., Timber 

     Press.



Hinchliff, J. 1994. An atlas of Oregon Butterflies. Oregon State University

     Bookstore, Corvallis.



Hinchliff, J. 1994. The distribution of the butterflies of Oregon. Evergreen 

     Aurelians. Oregon State University Bookstore, Corvallis, 176 pp. + map. 



Opler, Paul A. 1999. Peterson Field Guide to Western Butterflies, revised 

     edition. Houghton Mifflin Co., Boston, Mass.



Stanford, R.E. and P.A. Opler. 1993. Atlas of Western USA Butterflies. 

     Privately published, Denver, Colo. 



Tilden, J.W. and A.C. Smith. 1986. A Field Guide to Western Butterflies. 

     Houghton Mifflin Co., Boston, Mass.

Sachem (Atalopedes campestris)
distribution map
map legend

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