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Eastern Tiger Swallowtail

Papilio glaucus


The Eastern Tiger Swallowtail (Papilio glaucus) is a species of swallowtail butterfly native to North America. It is one of the most familiar butterflies in the eastern United States,[2] where it is common in many different habitats. It flies from spring to fall, during which it produces two to three broods. Adults feed on the nectar of many species of flowers, mostly from those of the Apocynaceae, Asteraceae, and Fabaceae families. P. glaucus has a wingspan measuring 7.9 to 14 centimeters (3 to 5.5 in). The male is yellow with four black "tiger stripes" on each fore wing. Females may be either yellow or black, making them dimorphic. The yellow morph is similar to the male, while the dark morph is almost completely black. The green eggs are laid singly on plants of the Magnoliaceae and Rosaceae families. Young caterpillars are brown and white; older ones are green with two black, yellow, and blue eyespots on the thorax. The caterpillar will turn brown prior to pupating. It will reach a length of 5.5 centimeters (2.2 in). The chrysalis varies from a whitish color to dark brown. Hibernation occurs in this stage in locations with cold winter months.


On milkweed on the side of a country road near my house.

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SarahWhitt 4 years ago

Thank you, Hema!!

Hema 4 years ago

great pic!

SarahWhitt 9 years ago

Thank you vanhevel!!
One of my favs too....

vanhevel 9 years ago

one of my favorite butterflies! great spotting!

SarahWhitt 9 years ago

Thanks so much Dora!! ;)

DoraAnderson 9 years ago

Awesome shot!

SarahWhitt 10 years ago

Thank you!

dandoucette 10 years ago


gretchen.kaufmann 10 years ago

That is such a gorgeous photo, Sarah!

SarahWhitt 10 years ago

oh...i didn't know that! will go back & separate such a novice!!

CynthiaMHori 10 years ago

Hi Sarah - each photo in this series can be on its own . Right now you have them all together and they count as one submission. If you submit each independently then you get "credit" for each one. So instead of two submissions you will have 5.
Nice photos by the way!

Spotted by

Ohio, USA

Spotted on Jul 22, 2010
Submitted on Apr 2, 2011

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