This Ground-Breaking Reference offers details for identifying beetles, spiders, flies, ants, butterflies, moths, dragonflies, earwigs, mayflies, crickets, grasshoppers, centipedes, millipedes, scorpions, earthworms, slugs, lacewings, wasps, bees, damselflies, alderflies, crabs, and many other invertebrates from the sign they leave behind. Includes almost 1,000 color photos and some 2,000 species.