vespertiliibacter vespertiliibacter vespertiliibacter is a genus of bacteria from the class of pasteurellaceae with one known species (vespertiliibacter pulmonis). vespertiliibacter pulmonis has been isolated from the lung of a bat (nyctalus noctula) from berlin in germany. vespertiliibacter scientific classification domain: bacteria phylum: pseudomonadota class: gammaproteobacteria order: pasteurellales family: pasteurellaceae genus: vespertiliibactermühldorfer et al. 2014 type species vespertiliibacter pulmonis species v. pulmonis