Swallowtail. Black Swallowtail Caterpillar on Fennel plant (spider web in lower center). Gainesville, Florida. 2012.
Teeny, tiny newly hatched caterpillars in my garden, about 1/4 of an inch long. All they do is eat and grow. Soon they will have stripped the Fennel down to the stems. By then, they'll be ready to pupate and a few weeks later we'll have a new crop of Black Swallowtail butterflies. The circle of life continues!