昆虫纲分为两大亚纲，33个目，如下：
  nbrygota
  1.原尾目（protura）2.弹尾目波lasp;4.缨尾目thysanura
  有翅亚纲a
  外翅部
  nbmerida6.蜻蜓目odonata7.蜚蠊目blattaria
  8.螳螂目mantodea9.等翅目ira10.缺翅目zoraptera
  nbera12.竹节虫目phasmida13.直翅目orthoptera14.蛩蠊目crylloblattodeaeranbmipteranbrmaptera18。同翅目ho摸ptera19。缨翅目thyra20.啮虫目ia21.食毛目mallophaga22.虱目anoplura
  内翅部
  nbranbra25.捻翅目ra
  nbgalopteranbpidoptera28.蛇蛉目raphidiodea
  nbra30.毛翅目triera31。双翅目diptera
  32。膜翅目hymeera33.蚤目ra