The sleepy duskywing has a wingspan of 1.25 -1.75 inches (3.2-4.4 cm). The upper side of its forewings is dark brown with two zig-zaggy grayish bands bordered in black.
The upper side of its hindwings has two rows of white-to-cream spots. Its undersides are marked in a similar, but lighter pattern than its uppersides.
The sleepy duskywing is found in dry rocky, sandy, or brushy areas like roadsides, railroad beds, pine barrens, oak barrens, and recently burned areas.
The sleepy duskywing caterpillar eats wild indigo, lupine, and crown vetch. The adult sleepy duskywing eats nectar from flowers, including blackberry, white clover, red clover, dogbane, and sunflower.
The female sleepy duskywing lays single eggs on the leaves of a host plant. There are two broods a year. The second brood overwinters.
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The sleepy duskywing is found in New Hamsphire.
The sleepy duskywing is found in much of the eastern United States from Maine south to Florida and west to Minnesota and Texas. In the west, it is found from California east to Colorado and south to New Mexico. It is also found in Canada and Mexico.
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