m>Peterson Field Guides--their field-tested visual identification system is designed to help you differentiate thousands of unique species accurately every time. Detailed descriptions of insect orders, families, and many individual species are illustrated with 1,300 drawings and 142 superb color paintings. Illustrations - which use the unique Peterson Identification System to distinguish one insect from another - include size lines to show the actual length of each insect. A helpful glossary explains the technical terms of insect anatomy.