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 Hymenoptera Linnaeus, 1758 - ants, bees, and wasps
             Genus Formica Linnaeus, 1758
               01 Formica herculeana Linnaeus, 1758
               02 Formica rufa Linnaeus, 1758
               03 Formica fusca Linnaeus, 1758 - silky ant
               04 Formica nigra Linnaeus, 1758 see Lasius niger (C. Linnaeus, 1758)
               05 Formica obsoleta Linnaeus, 1758
               06 Formica rubra Linnaeus, 1758
               07 Formica pharaonis Linnaeus, 1758 see Monomorium pharaonis (C. Linnaeus, 1758)
               08 Formica salomonis Linnaeus, 1758 see Monomorium salomonis (C. Linnaeus, 1758)
               09 Formica saccharivora Linnaeus, 1758
               10 Formica caespitum Linnaeus, 1758
               11 Formica omnivora Linnaeus, 1758
               12 Formica bidens Linnaeus, 1758
               13 Formica sexdens Linnaeus, 1758 see Atta sexdens (C. Linnaeus, 1758)
               14 Formica cephalotes Linnaeus, 1758 see Atta cephalotes (C. Linnaeus, 1758)
               15 Formica atrata Linnaeus, 1758 see Cephalotes atratus (C. Linnaeus, 1758)
               16 Formica haematoda Linnaeus, 1758 see Odontomachus haematodus (C. Linnaeus, 1758)
               17 Formica foetida Linnaeus, 1758 see Pachycondyla foetida (C. Linnaeus, 1758)