Subject: Hissing Caterpillar
Location: 32.558099,-94.349213
September 25, 2013 1:53 pm
Hi, I received this picture of a ”Hissing Caterpillar” a month or so ago. I have no idea what ’kind’ of worm this could possibly be. I have never seen anything like this in my life, but thought maybe you could help. We let him/her/it go but I am still curious as to what kind of worm this is. Any information would be a great help.
Thank you!
Signature: RG

Sphinx Caterpillar

Sphinx Caterpillar

Dear RG,
This is the Caterpillar of a Sphinx Moth, and caterpillars in the family Sphingidae are frequently called Hornworms because of the caudal horn.  Based on photos posted to BugGuide, this might be the caterpillar of a Twin Spotted Hawkmoth,
Smerinthus jamaicensis, but we are not certain.  We will see if Bill Oehlke can confirm the ID.

I favour Amorpha juglandis.
Do you have the Texas county or more precise location.

Location: Marshall, Texas

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