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Butterflies of North America

Butterflies of Oregon

American Lady (Vanessa virginiensis)
JPG -- species photo

American Lady (Vanessa virginiensis [Drury])

Wing span: 1 3/4 - 2 5/8 inches (4.5 - 6.7 cm).

Identification: Upperside with uneven brown, yellow, and orange pattern. Forewing with a black apical patch, a small white spot in the orange field below the patch, and a white bar at the leading edge of the forewing. Underside of hindwing with two large eyespots. Winter form is smaller and paler, summer form larger with brighter coloring.

Life history: During the afternoon, males perch on hilltops or on low vegetation if there are no hills. Females lay eggs singly on the top of host plant leaves. Caterpillars are solitary, living and feeding in a nest of leaves tied with silk. Adults hibernate.

Flight: Three to four broods from May-November, all year in the Deep South and South Texas. It is not known if adults can survive very cold winters; the East may have to be recolonized each year by southern migrants.

Caterpillar hosts: Plants in the sunflower family: sweet everlasting (Gnaphalium obtusifolium), pearly everlasting (Anaphalis margaritacea), plantain-leaved pussy toes (Antennaria plantaginifolia), wormwood (Artemisia), ironweed (Vernonia), and burdock (Arctium).

Adult food: Flower nectar almost exclusively, including dogbane, aster, goldenrod, marigold, selfheal, common milkweed, and vetch.

Habitat: Open places with low vegetation including dunes, meadows, parks, vacant lots, forest edges.

Range: Resident in the southern United States, Mexico, and Central America south to Colombia. Migrates to and temporarily colonizes the northern United States, southern Canada, the West Indies, and Europe. Rare stray to Newfoundland and Labrador.

Conservation: Not 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.

American Lady (Vanessa virginiensis)
distribution map
map legend

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