|Least Skipper Butterfly – Ancyloxypha numitor|
Family: Hesperiidae – Skippers / Subfamily: Hesperiinae – Grass skippers
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Live adult skipper butterflies photographed at Winfield, Illinois, USA.
Least Skipper takes nectar from ox-eye daisy
The least skipper is a weak flyer often found flitting about in low grass and foliage throughout the US east of the Rocky Mountains. They can be incredibly abundant in some years. I find them most often near watercourses or damp, low lying areas.
Identification: Antennae are short, banded with black and white alternating. Upper side of forewing is orange with a wide, diffuse black border at the outer margin; hindwing is yellow-orange with a wide black margin. Underside of forewing is black with orange borders at the tip and leading edge; hindwing is yellow-orange.
Flight: Three broods from May-October in most of the range, four broods from February-December in the Deep South and Texas. Wing span: 7/8 – 1 1/8 inches (2.2 – 2.9 cm). Caterpillar hosts: Various grasses including marsh millet (Zizaniopsis miliacea), rice cutgrass (Leersia oryzoides), and cultivated rice (Oryza sativa).
Adult food: Flower nectar from low growing plants such as wood sorrel, swamp verbena, pickerelweed, chickory, and white clover. Habitat: Moist or wet open places with tall grasses, marshes, ditches, slow streams, hillsides, or old fields with tall grasses. Range: Nova Scotia west to southern Saskatchewan; south through the eastern states to Florida, the Gulf states, Texas, and SE Arizona. Strays to central Colorado. 
Do least skippers love dandelion?
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.
Skipper butterflies can be divided into five subfamilies:
1. Opler, Paul A., Harry Pavulaan, Ray E. Stanford, Michael Pogue, coordinators. 2006. Butterflies and Moths of North America. Bozeman, MT: NBII Mountain Prairie Information Node.
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.