Pipevine Swallowtail Caterpillar

Caterpillar found in Norther California
Tue, May 26, 2009 at 3:04 PM
My son brought home this caterpillar from a close by river. We still have it in his bug catcher with some leaves and other foliage from there and it has since cocooned.
I am curious as to what this is.
Thank you!
Delia Campos
Sacramento, CA at the American River

Pipevine Swallowtail Caterpillar
Pipevine Swallowtail Caterpillar

Hi Delia,
This is the caterpillar of a Pipevine Swallowtail, Battus philenor, a lovely blue-green butterfly with orange spots on the undersides of the wings.

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