Peck's Skipper Butterfly - Polites peckius
Family Hesperiidae - skipper butterflies. Also commonly called "Yellowpatch skipper"
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Live adult skipper butterflies photographed at New York state and Illinois, USA.

Peck's Skipper Butterfly - Polites peckius
Peck's skipper at Science Lake, Allegany State Park, New York

Skipper Butterflies display many structural features of both moths and butterflies; stocky with a large head, widely spaced, hooked antennae, a chunky body and short wings, these smallish butterflies are sometimes rapid, erratic fliers.

The family is subdivided into 7 subfamilies: Hesperiinae (grass skippers),  Coeliadinae, Euschemoninae, Eudaminae (dicot skippers), Pyrginae (spreadwings),  Heteropterinae (monocot skippers), and Trapezitinae (found only in Oceania) [3].

Before I started photographing insects, I was completely unaware of these charming little butterflies. I have since come to appreciate their antics and admire their flying abilities. Skippers present a physical challenge to photogs - they rarely stay in one spot for more than a few moments, and they will weathervane you all day, never presenting their full profile while you follow them around a flower blossom.

Family Hesperiidae: Skipper Butterflies consist of nearly 3,000 species worldwide, 250 of which call North America home. Roughly one third of North American butterflies belong to this family. Skippers are named for their rapid, erratic flight.  Skippers can be the most difficult butterfly species to identify; their markings are maddeningly similar.

Identification: Upper side of male is brown with reddish-orange patches; forewing has a sinuous stigma. Female is darker with no stigma. Underside of the hindwing of both sexes has a patch of large yellow spots in the center surrounded by dark brown. Males perch in sunny open areas to await receptive females, and courtship takes place throughout the day. Females lay eggs singly; caterpillars eat leaves and live in leaf shelters. Caterpillars and chrysalids hibernate.

Flight: Two to three broods from May-October.
Wing span: 1 - 1 1/4 inches (2.5 - 3.2 cm).
Caterpillar hosts: Rice cutgrass (Leersia oryzoides); probably bluegrass (Poa pratensis) and others.
Adult food: Nectar from flowers including red clover, purple vetch, thistles, selfheal, New York ironweed, blue vervain, common milkweed, swamp milkweed, dogbane, and New Jersey tea.
Habitat: Many open grassy habitats including meadows, prairies, lawns, marshes, landfills, roadsides, vacant lots, and power line right-of-ways.
Range: British Columbia east across southern Canada to Nova Scotia; south to northeastern Oregon, southern Colorado, northwest Arkansas, and northern Georgia.
NatureServe Global Status: G5 - Demonstrably secure globally. [1]
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All adult true skippers have six well developed legs. Their eggs are tiny, usually less than .1mm. Most skipper caterpillars are green and tapered, and the neck appears constricted. The caterpillars weave silk and leaves into a daytime shelter for protection. Most pupate in loosely woven cocoons. The chrysalises are often coated with a powder or bloom. Chrysalis and caterpillars may overwinter.
References
  1. USGS, National Biological Information Infrastructure, Montana State University Big Sky Institute, Butterflies and Moths of North America, Peck's Skipper Butterfly - Polites peckius
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Order Lepidoptera, which contains both butterflies and moths, includes at least 125,000 known species including 12,000 in North America. Butterflies are revered for their brightly colored wings and pleasing association with fair weather and flowers.
Learn to identify many of the American Midwest's common species through descriptions and large diagnostic photos of live, wild specimens.
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