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