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 Vespa Linnaeus, 1758
               01 Vespa crabro Linnaeus, 1758 - European hornet
               02 Vespa vulgaris Linnaeus, 1758 see Vespula vulgaris (C. Linnaeus, 1758)
               03 Vespa rufa Linnaeus, 1758
               04 Vespa parietum Linnaeus, 1758
               05 Vespa muraria Linnaeus, 1758
               06 Vespa cribraria Linnaeus, 1758
               07 Vespa spinipes Linnaeus, 1758
               08 Vespa rupestris Linnaeus, 1758
               09 Vespa coarctata Linnaeus, 1758
               10 Vespa arvensis Linnaeus, 1758
               11 Vespa biglumis Linnaeus, 1758
               12 Vespa uniglumis Linnaeus, 1758
               13 Vespa cornuta Linnaeus, 1758
               14 Vespa signata Linnaeus, 1758
               15 Vespa canadensis Linnaeus, 1758
               16 Vespa emarginata Linnaeus, 1758
               17 Vespa calida Linnaeus, 1758