Subject:  In mexico
Geographic location of the bug:  Mexico by Lake Chapala
Date: 05/13/2019
Time: 09:35 PM EDT
Your letter to the bugman:  My mom found this caterpillar and its MASSIVE. Just trying to see if we could figure out what it is.
How you want your letter signed:  Should we build a caterpillar wall?

Hornless Hornworm is Typhon Sphinx

This is a Hornworm in the family Sphingidae.  Most Hornworms have caudal horns, but some genera and species shed the horn during molting before they reach maximum size.  This Hornworm is in the genus Eumorpha, one genus that characteristically have caterpillars that are hornless Hornworms.  We believe we have correctly identified your Hornworm as the caterpillar of the Typhon Sphinx, Eumorpha typhon, thanks to images posted to Sphingidae of the Americas. where it states:  “larvae feed upon grape species.”  Are there grape vines nearby?  This individual was probably looking for a good place to dig into soft soil to pupate.  According to Butterflies and Moths of North America:  “Caterpillars pupate in shallow underground cells” and “Range: Honduras north through Mexico to southern Arizona.


Location: Lake Chapala, Mexico

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