Distribution and Habitat
P. glaucus is found in the eastern United States from southern Vermont to Florida west to eastern Texas and the Great Plains. It is common throughout its range, although is rarer in southern Florida and absent from the Florida Keys. In 1932, a single specimen was collected in County Wicklow, Ireland. It is believed to have been an accidental introduction from North America. P. glaucus can be found almost anywhere deciduous forests occur. Common habitats include woodlands, fields, rivers, creeks, roadsides, and gardens. It will stray into urban parks and city yards. Because it has adapted to many different habitats and host plants, P. glaucus is a generalist, and is not considered threatened.
Adults are seen from spring to fall, although the exact date varies depending on the location. In the south, they are seen from February to November; in the north, they are seen from May to September. P. glaucus produces two broods in the north and three in the south. The first broods yield the smallest adults.
The Eastern Tiger Swallowtail is the state butterfly of Alabama, Delaware, Georgia, and South Carolina, and is the state insect of Virginia.
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