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 Aptera Linnaeus, 1758 Genus Podura Linnaeus, 1758 Podura nivalis Linnaeus, 1758 see Entomobrya nivalis (C. Linnaeus, 1758)