Some of the rare and more unique species are included to underscore the biological importance of this interesting biome. The most current taxonomic and common names are used in this guide to assist the enthusiast in keeping abreast with the many changes in this dynamic field. This guide covers the following National Parks and Monuments; Grand Canyon, Petrified Forest, Zion, Bryce Canyon, Capitol Reef, Canyonlands, Arches, Black Gunnison (Black Canyon area), Mesa Verde, Chaco Canyon, Aztec Ruins, Canyon De Chelly, Canyons of the Ancients, Cedar Breaks, Parashant, Escalante, El Malpais, El Morro, Hovenweep, Navajo, Natural Bridges, Rainbow Bridge, Sunset Crater, Vermillion Cliffs, Walnut Canyon, and Wupatki in addition to many wilderness and protected areas.Full color photographs and descriptions keying on important characters will help inexperienced and seasoned outdoors people to identify the animal.