Hexapods - insects see Epiclass Hexapoda Latreille, 1825
   Class Insecta Linnaeus, 1758 - insects
     Subclass Dicondylia Haeckel, 1866
       Infraclass Pterygota Lang, 1888
         Division Neoptera Martynov, 1923
           Subdivision Pareneoptera nom. null. see Subdivision Paraneoptera
             1 Order Heteroptera Latreille, 1810 - bugs see Suborder Heteroptera Latreille, 1810
             2 Order Homoptera Leach, 1815 - plant bugs see Order Hemiptera Linnaeus, 1758
             3 Order Thysanoptera Haliday, 1836 - thrips
             4 Order Psocoptera Shipley, 1904 - book and bark lice
             5 Phthiraptera see Order Phthiraptera Haeckel, 1896