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 mutica 5 Ephemera mutica Linnaeus, 1758 6 Ephemera vespertina Linnaeus, 1758 see Leptophlebia vespertina (C. Linnaeus, 1758)