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 Pseudomonadati (Gibbons and Murray 1978) Oren and Göker 2024
               Phylum Pseudomonadotaᵀ Garrity et al. 2021
                 Class Alphaproteobacteria Garrity et al. 2006
                   Order Rickettsiales Gieszczykiewicz 1939 (Approved Lists 1980)
                     Family Ehrlichiaceae Moshkovski 1945 (Approved Lists 1980)
                       01 Genus Aegyptianella Carpano 1929 (Approved Lists 1980) [monotypic]
                       02 Genus Anaplasma Theiler 1910 (Approved Lists 1980)
                       03 Genus Ehrlichiaᵀ Moshkovski 1945 (Approved Lists 1980)
                       04 Genus Lyticum (ex Preer et al. 1974) Preer and Preer 1982
                       05 Genus Neorickettsia Philip et al. 1953 (Approved Lists 1980)
                       06 Genus Wolbachia Hertig 1936 (Approved Lists 1980)
                       07 Genus "Candidatus Allocryptoplasma" corrig. Eshoo et al. 2020
                       08 Genus "Candidatus Mesenetia" corrig. Takano et al. 2022
                       09 Genus "Candidatus Neoehrlichia" Kawahara et al. 2004
                       10 Genus "Candidatus Neowolbachia" Li et al. 2022
                       11 Genus "Candidatus Xenolissoclinum" Kwan and Schmidt 2020
                       12 Genus "Candidatus Mellornella" Bojko et al. 2022 nom. pro-inval.