Natura - nature
   actualia - actual entities
     Mundus Plinius - physical world
       naturalia - natural bodies
         [crown] Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
           Domain Bacteria Woese et al. 1990 [paraphyletic?]
             Superphylum "Proteobacteria" Craig et al. 2010
               Phylum "Alphaproteobacteria" Garrity et al., 2006 [monotypic]
                 Class Alphaproteobacteriaᵀ Garrity et al. 2006
                   Order Rhodospirillales Pfennig and Trüper 1971 (Approved Lists 1980)
                     Family Acetobacteraceae (ex Henrici 1939) Gillis and De Ley 1980
                       Genus Belnapia Reddy et al. 2006
                         1 Belnapia moabensisᵀ Reddy et al. 2006
                         2 Belnapia rosea Jin et al. 2012
                         3 Belnapia soli Jin et al. 2013