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Photo#227558
yellow-eyed caterpillar - Papilio glaucus

yellow-eyed caterpillar - Papilio glaucus
St. Louis, Midwest County, Missouri, USA
September 20, 2008
Size: about 2 inches
We came across this caterpillar at a playground. It had an orange-red forked tongue. I do hope someone can tell me to what species it belongs.

Thanks!
cpc

Those eyes are fake
and so is the forked tongue - swallowtail caterpillars can stick out these osmeteria when they feel threatened - they emit a nasty scent to deter predators, as well as looking scary.

Welcome to BugGuide!
Looks like an Eastern Tiger Swallowtail caterpillar


More info here
http://bugguide.net/node/view/491

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