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 Neuroptera Linnaeus, 1758 - lacewings
             Genus Ephemera Linnaeus, 1758
               Cauda biseta
                 2 Ephemera bioculata Linnaeus, 1758
                 3 Ephemera culiciformis Linnaeus, 1758
                 4 Ephemera horaria Linnaeus, 1758 see Caenis horaria (C. Linnaeus, 1758)