Pale-rayed Skipper (Vidius perigenes [Godman])
Wing span: 7/8 - 1 1/8 inches (2.2 - 2.9 cm).
Identification: Upperside is brown with no markings. Underside of hindwing is yellow-brown with a white streak running from the base to the tip.
Life history: Adults fly swiftly, most often in the afternoon. Adults rest with their wings closed, but bask with hindwings open wide and forewings open to about 45 degrees. Males perch to find receptive females. Caterpillars live in shelters of webbed leaves.
Flight: Perhaps two broods from March-December in South Texas; probably several broods from February-December in Mexico.
Caterpillar hosts: Grasses.
Adult food: Flower nectar.
Habitat: Grassy areas in subtropical thorn forests.
Range: Lower Rio Grande Valley, Texas south through Mexico and Central America to Colombia.
Conservation: Not required for a periodic 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. Stanford, R. E. and P. A. Opler. 1993. Atlas of western USA butterflies including adjacent parts of Canada and Mexico. Denver and Fort Collins, CO.
Author: Jane M. Struttmann
State and Regional References:
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.