Subject: Swallowtail?
Location: Milpa Alta, Mexico
August 28, 2015 1:26 pm
About 4 inches long
Picture taken Aug 14, 2015
Signature: Leo Perez

Hornworm from Mexico

Hornworm from Mexico

Hi Leo,
This is not a Swallowtail caterpillar.  It is a Hornworm, the caterpillar of a Sphinx Moth in the family Sphingidae, but we have still not been able to identify it to the species level.

Update:  September 4, 2015
Thanks to a comment from Bostjan Dvorak, we are able to provide a species name of
Xylophanes falco, a species that ranges north into parts of Arizona, and BugGuide has some nice images of the hornworm.

2 Responses to Hornworm from Mexico: Xylophanes falco

  1. Bostjan Dvorak says:

    This fascinating caterpillar is of Xylophanes falco. Great finding, thanks for sharing!

    Best wishes,

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