Subject: red larva
Geographic location of the bug: Big Bend Nat. Park, TX
Date: 11/29/2017
Time: 10:35 PM EDT
Seen on November 20, 2014 at about 6000 ft. on the Laguna Meadows trail. About 2 1/2 inches long and 1/2 inch in diameter. It looked like a gummy worm.
How you want your letter signed: Dusty
Dear Dusty,
We are pretty confident that this is a Moth Caterpillar, possibly in the superfamily Noctuoidea, because it looks so similar to the caterpillars in the genus Heterocampa. Here is a similar looking individual posted to BugGuide. We will continue to attempt a more specific identification. Perhaps one of our readers will have a suggestion.
Thanks very much, I have been wondering about what it might be for a couple of years.
You guys have the coolest site!
JD
Not sure at all, but Cossidae larvae are gelatinous like this.