This field guide sets a new standard for insect identification, making it an indispensable resource to naturalists, educators, gardeners, and others. Engaging and accessible, Pacific Northwest Insects features detailed species accounts, each with a vivid photograph of a living adult, along with information for distinguishing similar species, allowing the reader to identify more than 3,000 species found from southern British Columbia to northern California, and as far east as Montana. The book features most of the commonly encountered insects, spiders, scorpions, millipedes, centipedes, and kin in the Pacific Northwest, as well as representatives of an amazing variety of unusual and interesting insects living in the area. After more than a decade of research, reviewing hundreds of thousands of museum specimens and scouring the technical entomological literature, Merrill Peterson has brought together for the first time in a single volume a wealth of information on the region's insect life. Detailed identifying information on over 3,000 species Complete description of 1,200 species Organized by insect group for easy identification Up-to-date taxonomy 1,725 color photos, 50 line drawings, and 2 maps.