Insecta

Predominant group of arthropods, placed within the class Hexapoda along with the Protura?, Collembola?, and Diplura?. The only group other than vertebrates to have developed flight.

• Order Archaeognatha? (Jumping bristletails)
• Order Monura? - extinct
• Order Thysanura? (Common bristletails: silverfish, firebrats)
• Pterygota?, the winged insects
  • Order Palaeodictyoptera? - extinct
  • ...
  • Order Ephemeroptera? (Mayflies)
  • Order Odonata? (Dragonflies and damselflies)
  • Neoptera?, insects with folding wings
    • Order Blattodea? (Cockroaches)
    • Order Mantodea? (Mantids)
    • Order Isoptera? (Termites)
    • Order Zoraptera? (Zorapterans)
    • Order Grylloblattodea? (Ice Insects)
    • Order Dermaptera? (Earwigs)
    • Order Plecoptera? (Stoneflies)
    • Order Orthoptera? (Grasshoppers, crickets, and katydids)
    • Order Phasmatodea? (Walking sticks, timemas)
    • Order Embioptera? (Webspinners)
    • Various extinct orders
    • Hemipterodea?
      • Order Psocoptera? (Booklice and barklice)
      • Order Pthiraptera? (Sucking and chewing lice)
      • Order Hemiptera? (True bugs, cicadas and kin - formerly Heteroptera + Homoptera)
      • Order Thysanoptera? (Thrips)
    • Endopterygota?, insects with complete metamorphosis
      • Order Miomoptera? - extinct
      • Order Megaloptera? (Alderflies, dobsonflies, and fishflies)
      • Order Raphidioptera? (Snakeflies)
      • Order Neuroptera? (Net-veined insects)
      • Order Coleoptera (Beetles)
      • Order Strepsiptera? (Twisted-winged parasites)
      • Order Mecoptera? (Scorpionflies and kin)
      • Order Siphonaptera? (Fleas)
      • Order Diptera? (Flies)
      • Order Trichoptera? (Caddisflies)
      • Order Lepidoptera? (Butterflies and moths)
      • Order Hymenoptera (Bees, ants, wasps, sawflies, and kin)

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Let's not overlook the (genus?) Nupedia, a kind of fly! ;-)