[organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Domain Bacteria Woese et al. 1990 stat. inval. see Domain Bacteria Woese et al. 2024
     Phylum "Proteobacteria" Garrity et al. 2005 stat. inval. see Phylum Pseudomonadota Garrity et al. 2021
       Class Gammaproteobacteria Garrity et al. 2005
         Order "Enterobacteriales" "Garrity and Holt 2001" nom. nud. see Order Enterobacterales Adeolu et al. 2016
           Family Enterobacteriaceae Rahn 1937 nom. cons. (Approved Lists 1980)
             Genus Xenorhabdus Thomas and Poinar 1979 (Approved Lists 1980)
               [Xenorhabdus nematophila] corrig. (Poinar and Thomas 1965) Thomas and Poinar 1979 (Approved Lists 1980)
                 Xenorhabdus nematophila subsp. nematophilaᵀ corrig. (Poinar and Thomas 1965) Akhurst 1983 see Xenorhabdus nematophila corrig. (Poinar and Thomas 1965) Thomas and Poinar 1979 (Approved Lists 1980)