Fall is an interesting time of year to see caterpillars crawling through your yards and across sidewalks and driveways. They’re also munching on plants in your favorite flower garden, storing the energy needed to survive the winter in a chrysalis cocoon and emerging in the spring as beautiful butterfly or moth. When you see them, do you wonder what they are and what will they become? View stunning closeups of some of the caterpillars of northern Illinos, and learn some fascinating facts about the critters. Photo: David Shemanske, FESS