PTERYGOTA (relations among the orders of winged insects; condensed and modified from Tree of Life)

    === Ephemeroptera (mayflies)                    ^ (Paleopteran     ^
    |                                               |    orders)       |
    |== Odonata (dragonflies, damselflies)          v                  |
<<==|                                                                  |
    |  ===== Orthoptera (grasshoppers, crickets,    ^                  |
    |  |                      katydids,etc.)        |                  |
    |  |                                            |                  E
    |  |==== Dermaptera (earwigs)                   |                  X
    |  |                                            |                  O
    |  |==== Phasmatodea (walking sticks,           | (Orthopteroid    P
    |  |                   leaf insects)            |    orders)       T
    |  |                                            |                  E
    |  |    ====== Isoptera (termites)              |                  R
    |  |    |                                       |                  Y
    |  |====|===== Mantodea (mantids)               |                  G
    |  |    |                                       |                  O
    ===|    ====== Blattaria (cockroaches)          v                  T
       |                                                               A
       |            === Psocoptera (book lice)      ^                  |
       |     =======|                               |                  |
       |     |      === Phthiraptera (lice)         |                  |
       |  ===|                                      | (Hemipteroid     |
       |  |  |========= Thysanoptera (thrips)       |    orders)       |
       |  |  |                                      |                  |
       ===|  ========== Hemiptera (bugs, cicadas,   |                  |
          |             whiteflies, aphids, etc.)   v                  v
          |
          |       ===== Megaloptera (dobsonflies and fishflies)        ^
          |       |                                                    |
          |    ===|==== Raphidioptera (snakeflies)                     E
          |    |  |                                                    N
          | ===|  ===== Neuroptera (lacewings, antlions, etc.)         D
          | |  |                                                       O
          | |  ======== Coleoptera (beetles)                           P
          | |                                                          T
          ==|  ======== Hymenoptera (wasps, bees, ants, sawflies)      E
            |  |                                                       R
            |  |     == Trichoptera (caddisflies)                      Y
            |  |  ===|                                                 G
            |  |  |  == Lepidoptera (moths and butterflies)            O
            ===|  |                                                    T
               ===|  == Mecoptera (scorpionflies, hangingflies)        A
                  |  |                                                 |
                  ===|= Siphonaptera (fleas)                           |
                     |                                                 |
                     == Diptera (flies)                                v

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