Here is the first and only guide to a subject of great interest to gardeners, small children, and lepidopterists: caterpillars, the immature form of butterflies and moths. This guide describes 120 common species of these fuzzy creatures. All the caterpillars, their adult forms and many of their host plants are illustrated. Amy Bartlett Wright has contributed to the Peterson Field Guide series, and her illustrations have been exhibited at the Smithsonian's Ripley Center.   ROGER TORY PETERSON, one of the world’s greatest naturalists, received every major award for ornithology, natural science, and conservation as well as numerous honorary degrees, medals, and citations, including the Presidential Medal of Freedom. The Peterson Identification System has been called the greatest invention since binoculars.