Systema naturæ - nature Universum - universe see [unranked] Mundus Plinius naturalia - natural bodies Regnum Animale nom. inval. - animal kingdom see Kingdom Animalia Linnaeus, 1758 Class Insecta nom. inval. - insects see Class Insecta Linnaeus, 1758 Order Aptera nom. inval. see Order Aptera Linnaeus, 1758 Genus Monoculus nom. inval. see Genus Monoculus Linnaeus, 1758, nom. oblit. Monoculus Bradl., nom. inval. see Pulex arborescens Swam., nom. inval.