The insect species commonly found in the river corridor and tributaries are midges, caddis flies, mayflies, stoneflies, black flies, mites, beetles, butterflies, moths, and fire ants. Numerous species of spiders and several species of scorpions including the bark scorpion and the giant hairy scorpion inhabit the riparian zone.

Desert Scrub and Coniferous Forest: Numerous insects and arachnids live in Grand Canyon National Park's desert scrub and coniferous forest habitats. Some of the common insects found at elevations above 2,000 feet are orange paper wasps, honey bees, black flies, tarantula hawks, stink bugs, beetles, black ants, and monarch and swallowtail butterflies. While scorpions are found mostly in the lower elevations, solpugids, wood spiders, garden spiders, black widow spiders and tarantulas can be found crawling around in the higher elevations.