Includes descriptions and 927 color photographs of North American invertebrates. Covers the tracks, egg cases, nests, feeding signs, galls, webs, burrows, and signs of predation for beetles, spiders, ants, flies, mayflies, dragonflies, earwigs, crickets, grasshoppers, scorpions, centipedes, millipedes, snails, earthworms, lacewings, wasps, damselflies, slugs, and alderflies.