Representative pictures of orders of Hexapods

Parainsecta
    Order Protura  -- Proturans


    2004 David R. Maddison

    Order Collembola  -- Springtails


    Baquero, E. & Jordana, R. photograph, copyright (2002).


     Source:  BugGuide.net

Entognatha
    Order Diplura  -- Diplurans


    2002 David R. Maddison

INSECTA
    Apterygota
        Order Archaeognatha  -- Bristletails


    2004 David R. Maddison

        Order Thysanura  -- Silverfish


     2003 David R. Maddison

    Pterygota (Infraclass Paleoptera)
        Order Ephemeroptera  -- Mayflies


    2003 Alex Wild                                                                2002  B. Newton

        Order Odonata
            Suborder Anisoptera  -- Dragonflies


    May Lattanzio, 2004                                                                          

           Suborder Zygoptera  -- Damselflies


    1997 Joseph L. Spencer

          (from Ecowatch)