This group undoubtedly represents the greatest amount of biodiversity found within the George Washington Memorial Parkway (GWMP) and is also the least known in terms of biological inventories. Currently, a total of 76 species of butterflies and 729 species of moths have been documented from GWMP. The only additional taxa that have been documented are 466 species of Coleoptera, 110 species of Hymenoptera, 45 species of Diptera, 38 species of Arachnida, 37 Odonata, 28 Trichoptera, 28 Heteroptera, 5 Homoptera, 4 Neuroptera,  2 Orthoptera, 1 Mecoptera, and 1 Plecoptera.