This book is an essential guide to identifying the common and economically important forest caterpillars in the Northeastern and Appalachian Regions. It presents a gallery of 187 of the most commonly encountered geometrid ("inchworm") caterpillars, along with stunning images of their adult forms for comparison. The guide is meticulously researched and beautifully illustrated, providing valuable insights into the life cycles, behaviors, and habitats of these fascinating creatures. With its comprehensive coverage and accessible language, this book is an indispensable resource for entomologists, nature enthusiasts, foresters, conservationists, and anyone interested in the intricate web of life in our forests.