[organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Domain Bacteria Woese et al. 1990
     Phylum "Proteobacteria" Garrity et al. 2005 see Superphylum Proteobacteria Craig et al. 2010
       Class Gammaproteobacteria Garrity et al. 2005
         Order "Enterobacteriales" Garrity and Holt 2001 nom. nud.
           Family Enterobacteriaceae Rahn 1937 (Approved Lists 1980)
             Genus Xenorhabdus Thomas and Poinar 1979 (Approved Lists 1980)
               1 [Xenorhabdus nematophila] corrig. (Poinar and Thomas 1965) Thomas and Poinar 1979 (Approved Lists 1980)
               2 Xenorhabdus beddingii (Akhurst 1986) Akhurst and Boemare 1993
               3 Xenorhabdus bovienii (Akhurst 1983) Akhurst and Boemare 1993
               4 Xenorhabdus budapestensis Lengyel et al. 2005
               5 Xenorhabdus ehlersii Lengyel et al. 2005
               6 Xenorhabdus innexi Lengyel et al. 2005
               7 Xenorhabdus japonica corrig. Nishimura et al. 1995
               8 Xenorhabdus poinarii (Akhurst 1983) Akhurst and Boemare 1993
               9 Xenorhabdus szentirmaii Lengyel et al. 2005