I agree with the Gulf Frit, but your caterpillars look a little different. Ours are pretty much solid orange although variations can occur. The one clearly has some dark striping going on. I wonder if it's a natural variation in your area? Looks cool, though! I know Polydamas caterpillars can vary in pattern due to their exposure to UV rays; I wonder if something similar is happening to the Gulf Frits? Err...Espejitos.
