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 Order Psocoptera Shipley, 1904 - book and bark lice