Entomology (Study of Bugs)/rare worm or bug


rare worm
rare worm  

rare worm
rare worm  
What do you think this is.???

Hi, Travis:

Nice product placement.  Now I want a Coke :-)

The creature in your images is a swallowtail caterpillar (not sure which one, and you didn't give me a geographic location to go by).  They often turn brown just before they molt to the pupa stage (chrysalis), so if you still have it, give it a forked twig to climb on and it will probably be a pupa by the next day.

Rare?  No, just seldom seen.  Caterpillars are remarkably cryptic.


Entomology (Study of Bugs)

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Eric R. Eaton


I answer insect and spider identification questions ONLY. Attach images if possible. No "what bit me?", "what do I feed this bug in captivity?", or science fair project questions please. NO TECHNICAL QUESTIONS ABOUT INSECT PHYSIOLOGY.


Principal author, Kaufman Field Guide to Insects of North America. Professional entomologist employed previously at University of Massachusetts, Chase Studio, Inc., and Cincinnati Zoo; contract work for West Virginia Department of Natural Resources, Smithsonian Institution, and Portland (Oregon) State University.

Author, Kaufman Field Guide to Insects of North America, Missouri Conservationist magazine, Ranger Rick, Birds & Blooms, Timeline (journal of the Ohio Historical Society). I have contributed to several books as well.

Oregon State University, undergraduate major in entomology, did not receive degree.

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One of the top 50 experts in all categories for AllExperts.com, 2009.

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Principal author of the Kaufman Field Guide to Insects of North America, Smithsonian Institution (contract), Cincinnati Zoo (employer), Portland State University (contract), Chase Studio, Inc (employer), Arkansas Museum of Discovery (guest speaker). Currently seeking speaking engagements, leadership roles at nature festivals, workshops, and ecotours.

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