North American Butterflies and Moths List

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The Registry of Nature Habitats

U.S. Geological Survey

Butterflies of North America

Tanna Longtail (Urbanus tanna)
JPG -- species photo

Tanna Longtail (Urbanus tanna Evans)

Wing span: 1 5/16 - 1 1/2 inches (3.3 - 3.8 cm).

Identification: Tails are long; body and wings are brown. Forewing of both sexes has a thin transparent median band; male also has 5 transparent spots at the costal margin. Male has no costal fold.

Life history: Not reported.

Flight: June-December in Mexico; June in South Texas.

Caterpillar hosts: Not reported.

Adult food: Probably flower nectar.

Habitat: Subtropical.

Range: Ecuador and French Guiana north through Central America to Mexico. A rare stray to the lower Rio Grande Valley, Texas.

Conservation: Not necessary for a rare stray.

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.


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

Tanna Longtail (Urbanus tanna)
distribution map
map legend

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