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Butterflies of North America -- Neonympha mitchellii

North American Butterflies and Moths List

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Butterflies of North America

Mitchell's Satyr (Neonympha mitchellii)
JPG -- species photo

Mitchell's Satyr (Neonympha mitchellii French)

Wing span: 1 3/8 - 1 3/4 inches (3.5 - 4.5 cm).

Identification: Small and fragile with translucent wings. Underside of both wings with yellow-rimmed black submarginal eyespots.

Life history: Adults fly in sunlight with a slow, bobbing flight about a foot above the grasses. Males patrol for females, who lay eggs singly on host plants. Caterpillars eat leaves and the fourth stage hibernates.

Flight: Flight lasts only about 10 days in late June to early July.

Caterpillar hosts: Sedges and bulrush.

Adult food: Not reported.

Habitat: Sedge swamps, marshes.

Range: Isolated populations in southern Michigan, northern Indiana, northern New Jersey, and south-central North Carolina.

Conservation: Endangered species. This sensitive butterfly is declining in most of its range, and has already disappeared from former habitat in northeastern Ohio and Maryland. Collecting may eradicate its small colonies.

The Nature Conservancy Global Rank: G2 - Imperiled globally because of rarity (6 to 20 occurrences), or because of other factors demonstrably making it very vulnerable to extinction throughout its range. (Endangered throughout its range).

Management needs: Prevent trampling of habitat. Prevent drainage or conversion of its wetland habitat.

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

Mitchell's Satyr (Neonympha mitchellii)
distribution map
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