Range:
This species occurs from central Alaska south to northern Oregon, along the
Rockies to northern New Mexico, and east to western Manitoba and central Montana.
It occurs through much of Idaho.
Habitat:
This species utilizes a wide variety of open habitats, including
open woodlands, meadows, bogs, fields, and sagebrush steppe.
Diet:
Caterpillar:
Caterpillars feed on grasses (Poaceae); the specific host plant species have not been observed
or reported.
Adult:
Butterflies drink flower nectar.
Ecology:
There is one generation of caterpillars each summer. Caterpillars
overwinter in a physiological state called diapause, and emerge in spring to continue
feeding and molting,
and eventually to pupate.
Adults generally fly
from June to July, but may be seen as early as May and as late as October.
Reproduction:
Males actively patrol
to search for receptive females. Females lay white eggs, either singly or in
small clusters, on grasses (Poaceae) or dead leaves.
Conservation:
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Global Rank: | G5
populations are widespread, abundant, and secure. |
Opler, P. A., H. Pavulaan, and R. E. Stanford. 1995. Butterflies of North America. Jamestown, North Dakota, USA: Northern Prairie Wildlife Research Center Home Page. http://www.npwrc.usgs.gov/resource/distr/lepid/bflyusa/bflyusa.htm (Version 05Nov98).
Opler, P. A. and A. B.Wright. 1999. A Field Guide to the Western Butterflies. Second Edition. Peterson Field Guide Series. Houghton Mifflin Company, New York, New York, USA, 540 pp.
Pyle, R. M. 1981. National Audubon Society Field Guide to North American Butterflies. Alfred A. Knopf, Inc., New York, New York, USA, 924 pp.
Scott, J. A. 1986. The Butterflies of North America. Stanford University Press, Stanford, California, USA, 583 pp.
Stanford, R. E. and P. A. Opler. 1993. Atlas of Western U.S.A. Butterflies (Including Adjacent Parts of Canada and Mexico). Published by authors, Denver, Colorado, USA, 275 pp.