Seen with a few of its brethren in NOLA so it’s probably pretty common … lil’ help?
http://images.tapatalk-cdn.com/15/04/11/1d576644969568ec7aadeb5348bd8b0a.jpg
http://images.tapatalk-cdn.com/15/04/11/b13f2d77fa37b71b12a6edb937b0cea0.jpg
Bonus q: any common skin reactions to those spines? They look like they might irritate.
That looks like the buck moth catapillar New Orleans caterpillars - search in pictures
checks link
looks at Wikipedia
Yeah, probably got it in one. Looks like it’s common in/under the nearby live oaks, and the stinging spines on the back cause a burning or itchy reaction.
Thanks, Potestas! 
It’s a general and fairly reliable rule that this is true of any hairy/spiny caterpillar…