The eastern tiger swallowtail was formerly considered a single species with a vast range into northern Canada and the eastern United States. glaucus, along with the other tiger swallowtails, in the genus Pterourus. This species was later described by Carl Linnaeus in his 10th edition of Systema Naturae in 1758. White named his drawing "Mamankanois" which is believed to be a Native American word for "butterfly". It was drawn by John White in 1587, during Sir Walter Raleigh's third expedition to Virginia. The first known drawing of a North American butterfly was of an eastern tiger swallowtail. A shadow of the "tiger stripes" can be seen on the underside of some dark females. The bluish postmedian area on the ventral hindwing has one row of orange spots. In the dark morph, the areas that are normally yellow are replaced with dark gray or black. The yellow morph differs from the male in having a blue postmedian area on the dorsal hindwing. This broken bar is present in both sexes, and is used to distinguish P. The ventral forewing margin has a yellow bar that is broken into spots. The inner margin of the hindwing has small red and blue spots. The postmedian area of the hindwing is black with yellow spots along the margin. The outer edge of the forewing is black with a row of yellow spots. Males are yellow with four black "tiger stripes" on each forewing. Southern individuals are larger than northern ones. The wingspan ranges from 7.9 to 14 cm (3.1 to 5.5 in) with females being the larger sex. The eastern tiger swallowtail is the state butterfly of Alabama (as well as state mascot), Delaware, Georgia, North Carolina and South Carolina, and is the state insect of Virginia. Hibernation occurs in this stage in locations with cold winter months. The chrysalis varies from a whitish color to dark brown. It will reach a length of 5.5 centimetres (2.2 in). The caterpillar will turn brown prior to pupating. Young caterpillars are brown and white older ones are green with two black, yellow, and blue eyespots on the thorax. The green eggs are laid singly on plants of the families Magnoliaceae and Rosaceae. The yellow morph is similar to the male, but with a conspicuous band of blue spots along the hindwing, while the dark morph is almost completely black. Females may be either yellow or black, making them dimorphic. The male is yellow with four black " tiger stripes" on each forewing. glaucus has a wingspan measuring 7.9 to 14 cm (3.1 to 5.5 in). Adults feed on the nectar of many species of flowers, mostly from those of the families Apocynaceae, Asteraceae, and Fabaceae. It flies from spring until fall, during which it produces two to three broods. It is one of the most familiar butterflies in the eastern United States, ranging north to southern Ontario, Canada, and is common in many different habitats. Papilio glaucus, the eastern tiger swallowtail, is a species of butterfly native to eastern North America.
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