Insects, Spiders, Centipedes, Millipedes - Gila Cliff Dwellings National Monument (U.S. National Park Service) The insect world in the vicinity of the Gila Cliff Dwellings and the surrounding Gila Wilderness is rich and abundant. In fact, existing field guides are often inadequate to describe the all the species in the area. Insects include a variety of bees, wasps, hornets, beetles, ants, dragonflies, damselflies, cicadas, grasshoppers, crickets, butterflies, moths, mantids, worms, cochineal scales, katydids, lacewings, and flies.