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Black Swallowtail Caterpillar

Papilio polyxenes

Description:

The black swallowtail caterpillar has an orange "forked gland", called the osmeterium. When in danger, the osmeterium, which looks like a snake's tongue, everts and releases a foul smell to repel predators. Black swallowtail chrysalis The pupae may be green or brown, but not depending on surroundings or the background on which they have pupated. The color of the chrysalis is determined by a local genetic balance that ensures the majority of pupae will blend in.[2]

Habitat:

Open meadows and backyards wherever their favorite plants grow; ranging from southern Canada into Mexico.

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RussellRohling
Spotted by
RussellRohling

Alexandria, Kentucky, USA

Spotted on Sep 15, 2012
Submitted on Sep 15, 2012

Reference

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