Features descriptions of over three hundred insect families, covering all twenty-nine orders of insect, as well as a selection of spiders and other terrestrial arthopods, and includes a photographic identification key to the main insect groups.

Describes the habits and life cycles of various insects and provides clues for identifying them in their natural habitats.

Invertebrates of the southwestern United States from desert hairy scorpion and the black widow spider to the giant vinegaroon and the velvet ant.