Two Caterpillars

New pics
Hey Daniel,
I have a couple specials for you to add to your archives. I seem to be getting better at my photos. The unknown bug was
found in a drift fence array in West Texas, and none of the researchers could figure out what it was. Can you?!
Wendy A.

Hi Wendy,
The Green Sphinx Caterpillar is probably a member of the genus Eumorpha, formerly Pholus. Notice how the head is retracted into the thoracic portion of the body as well as the absence of a caudal horn. We entertain the possibility that it most resembles Eumorpha pandorus in its green form, but the abdominal spots do not appear to be ringed in black in your photo. This is a caterpillar that comes in both a brown and green form. We love your photo of a Pipevine Swallowtail Caterpillar, Battus philenor. Most photos online show black caterpillars with red fleshy spines. We might be wrong, but we believe there is a red form as well. Your photos really are great.

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