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 Hemiptera Linnaeus, 1758 - true bugs Genus Cicada Linnaeus, 1758 Spumantes Linnaeus, 1758 Cicada nervosa Linnaeus, 1758