Subject: Hissing Caterpillar
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.
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.