Natura - nature
   actualia - actual entities
     Mundus Plinius - physical world
       naturalia - natural bodies
         [Regnum Animale C. Linnaeus, 1758 - animal kingdom] see Kingdom Animalia Linnaeus, 1758
           [Aranei C. Clerck, 1757]
             [Horde Aranei Aerei C. Clerck, 1757]
               [Class Retiarii C. Clerck, 1757]
                 1 [Genus Verticales C. Clerck, 1757, nom. inval.]
                 2 [Genus Irregulares Clerck, 1757, nom. inval.]
                 3 [Genus Textores C. Clerck, 1757, nom. inval.]