North American Butterflies and Moths List

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Butterflies of North America

Butterflies of North Dakota

Hoary Elfin (Callophrys [Incisalia] polios)
JPG -- species photo

Hoary Elfin (Callophrys polios [Cook & Watson])

Wing span: 7/8 - 1 1/8 inches (2.2 - 2.9 cm).

Identification: No tails. Upperside is orangish brown; underside brown. Forewing with outer margin of "frosted" white; irregular postmedian line is white. Outer half of hindwing is "frosted" light gray.

Life history: Males perch on plants in sunny clearings and low spots to look for females. Eggs are laid singly on leaf buds or flower pedicels. Chrysalids hibernate.

Flight: One flight from April-June.

Caterpillar hosts: Bearberry (Arctostaphylos uva-ursi) in the heath family (Ericaceae); probably trailing arbutus (Epigaea repens).

Adult food: Nectar from flowers including leatherleaf, pyxie, wild strawberry, and willow.

Habitat: Open sunny glades in barrens, rocky ridges, dunes, forest edges, adjacent to bogs.

Range: Very local distribution. Maine south to New Jersey, south in Appalachians to Virginia; west across Great Lakes states and southern prairie provinces; north to Alaska. Along Pacific Coast to northern California; south in Rocky Mountains to northern New Mexico.

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:


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.



Royer, R.A. 1988. Butterflies of North Dakota. Science Monograph #1, Minot 

     State University, Minot, North Dakota.



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.

Hoary Elfin (Callophrys [Incisalia] polios)
distribution map
map legend

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