Edwards' Skipperling (Oarisma edwardsii [Barnes])
Wing span: 7/8 - 1 1/8 inches (2.2 - 2.9 cm).
Identification: Fringes are white-tipped. Upperside is brownish orange; forewing cell is brighter. Underside of forewing is brownish orange with black at the lower margin. Underside of hindwing is yellowish with orange on the lower margin.
Life history: To find receptive females, males patrol the habitat with rapid flight.
Flight: One brood in the Rocky Mountains from June-August; multiple broods in west Texas from April-September.
Caterpillar hosts: Possibly sedges (Cyperaceae) or grasses (Poaceae).
Adult food: Nectar from flowers including thistle (Cirsium species).
Habitat: Chaparral, open woodland, grasslands, meadows.
Range: Utah, Colorado, Arizona, New Mexico, and west Texas south to Puebla, Mexico.
Conservation: Not usually required.
The Nature Conservancy Global Rank: G4 - Apparently secure globally, though it might be quite rare in parts of its range, especially at the periphery.
Management needs: None reported.
Bailowitz, R. A., and J. P. Brock. 1991. Butterflies of southeastern Arizona. Sonoran Arthropod Studies, Inc., Tucson, Arizona. 342 pages. Scott, J. A. 1986. The butterflies of North America. Stanford University Press, Stanford, Calif. 583 pages, 64 color plates. Stanford, R. E. and P. A. Opler. 1993. Atlas of western USA butterflies including adjacent parts of Canada and Mexico. Denver and Fort Collins, CO. 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, F.M., Eff, J.D., and B. Rotger. 1957. Colorado Butterflies. Denver Museum of Natural History, Denver. Ferris, C.D. and F.M. Brown. 1980. Butterflies of the Rocky Mountain States. University of Oklahoma Press. Norman. Layberry, R.A., Hall, P.W. & Lafontaine, D.J., 1998. The Butterflies of Canada. University of Toronto Press, Toronto, ON. 280 pp. 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.