Imperium naturæ C. Linnaeus, 1758 - nature
   Mundus Plinius - physical world
     naturalia - natural bodies
       Regnum Animale C. Linnaeus, 1758 - animal kingdom see Kingdom Animalia Linnaeus, 1758
         Class Insecta Linnaeus, 1758 - insects
           Order Hemiptera Linnaeus, 1758 - true bugs
             Genus Chermes Linnaeus, 1758, nom. illeg.
               01 Chermes graminis Linnaeus, 1758
               02 Chermes ulmi Linnaeus, 1758
               03 Chermes cerastii Linnaeus, 1758
               04 Chermes pyri Linnaeus, 1758
               05 Chermes buxi Linnaeus, 1758
               06 Chermes urticae Linnaeus, 1758
               07 Chermes betulae Linnaeus, 1758
               08 Chermes alni Linnaeus, 1758
               09 Chermes quercus Linnaeus, 1758
               10 Chermes abietis Linnaeus, 1758
               11 Chermes salicis Linnaeus, 1758
               12 Chermes fraxini Linnaeus, 1758
               13 Chermes aceris Linnaeus, 1758
               14 Chermes ficus Linnaeus, 1758