Natura - nature
   actualia - actual entities
     Mundus Plinius - physical world
       naturalia - natural bodies
         Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
           Domain Bacteria Woese et al. 2024
             Kingdom Bacillatiᵀ (Gibbons and Murray 1978) Oren and Göker 2024
               Phylum Mycoplasmatota Murray 2021 [monotypic]
                 Class Mollicutes Edward and Freundt 1967 (Approved Lists 1980)
                   Order Mycoplasmatales Freundt 1955 (Approved Lists 1980)
                     Family Spiroplasmataceae (ex Skripal' 1974) Skripal' 1983 [monotypic]
                       Genus Spiroplasmaᵀ Saglio et al. 1973 (Approved Lists 1980)
                         Spiroplasma citriᵀ Saglio et al. 1973 (Approved Lists 1980)