The George Washington Memorial Parkway (GWMP) provides habitat for the 245 species of birds, 25 mammals, 21 reptiles, 16 amphibians, 61 fish, 43 mollusks, 11 crustaceans, 76 butterflies, 722 moths, 466 beetles, 91 bees, 38 arachnids, 37 dragonflies and damselflies, and 28 caddisflies that have been documented as extant. Twenty-six species of animals (6 vertebrates and 20 invertebrates) are listed by the states of Virginia or Maryland as rare, threaten or endangered in the states where they occur. Additionally, 51 of the beetle species, 5 bees, 5 true bugs, 2 alderflies, a moth, a flower fly, and a sawfly found within GWMP are not known from any other Virginia sites. Inventories of other taxonomic groups are currently underway at GWMP.