I had one very similar in my wave runner last weekend. I never saw one like it before. I was getting a leaf to scoop him up with when my neighbor told me to be careful, they sting. I thought he was crazy. A caterpillar that stings? I guess he was right. Glad I didn't touch it.
Here is what the one I found looked like. (Not my picture) I never thought to take one.
Chris
So they're in Florida and that pic is labeled Michigan .. hmmm .. looks like the alien invasion must have begun .. gotta go find my aluminum foil hat .. brb ..
wow...i guess those wont survive here. good pictures!