Pronus Longtail (Urbanus pronus Evans)
Wing span: 1 5/16 - 1 3/4 inches (3.4 - 4.4 cm).
Identification: Tails are short. Upperside is dark blackish brown; body and wing bases are iridescent green; iridescence on hindwing ends abruptly before outer margin. Male does not have a costal fold. Dark row on hindwing underside consists of separate spots.
Life history: Not reported.
Flight: April-September in Mexico; October in South Texas.
Caterpillar hosts: Not reported.
Adult food: Flower nectar.
Range: Brazil and Paraguay 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