Chestnut-marked Skipper (Thespieus macareus [Herrich-Schäffer])
Wing span: 1 5/16 - 1 1/2 inches (3.4 - 3.9 cm).
Identification: Upperside is dark brown with large transparent white spots on both wings. Underside of hindwing is variegated white, brown, gray, and red.
Life history: Not reported.
Flight: Several broods; from July-November in South Texas, February-November in Mexico and Central America.
Caterpillar hosts: Not reported.
Adult food: Flower nectar.
Habitat: Subtropical thorn scrub.
Range: Venezuela north through Colombia and Central America to central Mexico. An occasional stray to the lower Rio Grande Valley, Texas.
Conservation: Not required 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
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.