commensalibacter commensalibacter commensalibacter is a genus of gram-negative, aerobic and rod-shaped bacteria from the family of acetobacteraceae which was originally isolated from drosophila melanogaster. the complete genome of the type strain c. intestini a911t has been sequenced. commensalibacter scientific classification domain: bacteria phylum: pseudomonadota class: alphaproteobacteria order: rhodospirillales family: acetobacteraceae genus: commensalibacterrho et al. 2008 type species commensalibacter intestini species c. intestini although originally isolated from drosophila melanogaster, commensalibacter intestini has been also found in honey bees and bumblebees.