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 Aquatici C. Clerck, 1757]