An adult, just emerged, inflating its wings	An adult male. Its antennae are fuzzier (pectination) than a female's antennae. See right.	A female's antennae are less fuzzy than a male's. See left.	This caterpillar is in second instar. A caterpillar sheds its skin 4 intermediate times, resulting in 5 phases, called instars.
A mating pair	Black caterpillars are emerging from their eggs.		1st instar
The moth must climb in order to slowly inflate its wings.			Entering second instar. Often, a caterpillar will eat the skin it shed.
Caterpillar on left in early fifth, and final, instar. It can be 4" long and as thick as a thumb.			The moth's entire body is covered in tiny hairlike scales. The scales give it color.