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Butterflies of North America

Butterflies of Pennsylvania

Twin-spot Skipper (Oligoria maculata)
JPG -- species photo

Twin-spot Skipper (Oligoria maculata [W. H. Edwards])

Wing span: 1 3/8 - 1 5/8 inches (3.5 - 4.2 cm).

Identification: Wings are rounded and brown-black. Upperside of forewing has 4 transparent spots. Underside of hindwing has a pale red-brown overlay and 3 oval white spots, 2 of which are close together.

Life history: Not reported.

Flight: Two broods from April-September, possibly three broods in Florida.

Caterpillar hosts: Grasses.

Adult food: Nectar including that from pickerelweed flowers.

Habitat: Coastal swamps and pinewoods.

Range: Coastal North Carolina south through Florida and west along the Gulf Coast to east Texas. A rare stray to Pennsylvania, Maryland, and New Jersey.

Conservation: Not usually required.

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.

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.     



Shapiro, A.M. 1966.  Butterflies of the Delaware Valley.  American Entomological

     Society Special Publication.  Philadelphia, PA.  79 pp. 



Tietz, H.M.  1952.  The Lepidoptera of Pennsylvania.  The Pennsylvania State 

     College School of Agriculture Agricultural Experiment Station.  State 

     College, PA.  194 pp.



Wright, D.M.  1995,  Atlas of Pennsylvania Butterflies. Special Private 

     Publication, Lansdale, PA.  22 pp.

Twin-spot Skipper (Oligoria maculata)
distribution map
map legend

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