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Gulf Fritillary (Agraulis vanillae)
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Gulf Fritillary (Agraulis vanillae [Linnaeus])

Wing span: 2 1/2 - 3 3/4 inches (6.3 - 9.5 cm).

Identification: Upperside bright orange with black markings; 3 black-encircled white dots on forewing leading edge. Underside brown; forewing with orange at base; both wings with elongated, iridescent silver spots.

Life history: Males patrol for females, who lay eggs on many parts of the host plant. Caterpillars feed on most parts of the host. Adults overwinter in the south.

Flight: Throughout the year in south Florida and South Texas, January-November in the north. Number of broods has not been determined.

Caterpillar hosts: Various species of passion-vine including maypops (Passiflora incarnata) and running pop (P. foetida).

Adult food: Nectar from lantana, shepherd's needle, cordias, composites, and others.

Habitat: Pastures, open fields, second-growth subtropical forest and edges, city gardens.

Range: South America north through Central America, Mexico, and the West Indies to the southern United States. Wanders north to the central United States; rare northward.

Conservation: Not usually of concern.

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: Cultivate host plants.

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.

Author: Jane M. Struttmann

State and Regional References:

Glassberg,  J.  1993.  Butterflies Through Binoculars: A Field Guide to 
     Butterflies in the Boston-New York-Washington Region.  Oxford Univ. Press, 
     New York, N.Y.  160 pp.

Layberry, R.A., Hall, P.W. & Lafontaine, D.J., 1998.  The Butterflies of 
     Canada.  University of Toronto Press, Toronto, ON.  280 pp.
     
Opler, P.A. 1998. A field guide to eastern butterflies, revised format.
     Houghton Mifflin Co., Boston.      

Woodbury, E.N.  1994.  Butterflies of Delmarva.  Delaware Nature Society, Inc.,
     Tidewater Publishers, Centreville, MD.  138 pp.  [NOTE: this book only 
     treats True Butterflies (Papilionoidea).  It does not treat Skippers
     (Hesperioidea).]
Gulf Fritillary (Agraulis vanillae)
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