Harvesters and Metalmarks. Harvester Butterfly Caterpillar and Wooly Aphids on Smilax Vine. Natural Area Teaching Lab, University of Florida, Gainesville, Florida. 2012.
Harvester Butterfly caterpillars are unusual because they are carnivorous! They do not eat plants like most caterpillars. Instead, they feed on wooly aphids.
More about caterpillars on my blog: http://earthteachme.blogspot.com/2012/10/caterpillar-crazy.html