Kingdom Animalia Linnaeus, 1758 - animals
   Phylum Arthropoda Siebold, 1848 - arthropods
     Subphylum Hexapoda Latreille, 1825 see Epiclass Hexapoda Latreille, 1825
       Class Insecta Linnaeus, 1758 - insects
         1 Order Archaeognatha Börner, 1904 - bristletails
         2.1 Order Zygentoma Börner, 1904 - silverfish
         2.2.1.1 Order Ephemeroptera Hyatt & Arms, 1891 - mayflies
         2.2.1.2.1.1 Order †Geroptera Brodsky, 1994
         2.2.1.2.1.2.1 Order †Protodonata C. Brongniart, 1893 - griffenflies
         2.2.1.2.1.2.2 Order Odonata Fabricius, 1793 - dragonflies and damselflies
         2.2.1.2.2.1.1 Order †Palaeodictyoptera Goldenberg, 1877
         2.2.1.2.2.2.1 Order †Mischopterida Handlirsch, 1906
         2.2.1.2.2.2.2 Order †Diaphanopterodea Handlirsch, 1906
         2.2.2.1 Order †Paoliida Handlirsch, 1906
         2.2.2.2.1 Order †Caloneurodea Martynov, 1938
         2.2.2.2.2 Order †Titanoptera Sharov, 1968
         2.2.2.2.3 Order Orthoptera Olivier, 1789 - locusts, katydids, crickets, grasshoppers
         2.2.2.3.1 Order Phasmida Leach, 1815 - stick and leaf insects
         2.2.2.3.2 Order Embioptera Lameere, 1900 - embiopterans see Order Embiodea
         2.2.2.4.1 Order Grylloblattodea Brues & Melander, 1932 - ice crawlers
         2.2.2.4.2 Order Mantophasmatodea Zompro, Klass, Kristensen & Adis, 2002
         2.2.2.5.1 Order Plecoptera Latreille, 1802 - stone flies
         2.2.2.5.2 Order Dermaptera De Geer, 1773 - earwigs
         2.2.2.6.1 Order Zoraptera Silvestri, 1913 - zorapterans
         2.2.2.6.2.1 Order Mantodea Burmeister, 1838 - mantids and praying mantids
         2.2.2.6.2.2 Order Blattodea Brunner von Wattenwyl, 1882 - cockroaches and termites
         2.2.3.1 Order †Miomoptera Martynov, 1927
         2.2.3.2.1 Order Psocoptera Shipley, 1904 - book and bark lice
         2.2.3.2.2 Order Phthiraptera Haeckel, 1896 - phthirapterans
         2.2.3.3.1 Order Thysanoptera Haliday, 1836 - thrips
         2.2.3.3.2 Order Hemiptera Linnaeus, 1758 - true bugs
         2.2.4 Order †Glosselytrodea Martynov, 1938 - glosselytrodeans
         2.2.5.1 Order Hymenoptera Linnaeus, 1758 - ants, bees, and wasps
         2.2.5.2.1.1.1 Order Strepsiptera Kirby, 1813 - twisted-wing insects
         2.2.5.2.1.1.2 Order Coleoptera Linnaeus, 1758 - beetles
         2.2.5.2.1.2.1 Order Neuroptera Linnaeus, 1758 - lacewings
         2.2.5.2.1.2.2.1 Order Megaloptera Latreille, 1802 - alderflies
         2.2.5.2.1.2.2.2 Order Raphidioptera L. Navás, 1916 - snakeflies
         2.2.5.2.2.1.1 Order Trichoptera Kirby, 1813 - caddisflies
         2.2.5.2.2.1.2 Order Lepidoptera Linnaeus, 1758 - butterflies, moths
         2.2.5.2.2.2.1 Order Diptera Linnaeus, 1758 - true flies, mosquitoes, gnats
         2.2.5.2.2.2.2.1 Order Siphonaptera Latreille, 1825 - fleas
         2.2.5.2.2.2.2.2 Order Mecoptera Packard, 1886 - scorpion flies