azoarcus tolulyticus azoarcus tolulyticus azoarcus tolulyticus is a species of bacteria. it is a nitrogen-fixing bacteria. it is notable for degrading toluene. tol-4 is its type strain. azoarcus tolulyticus scientific classification domain: bacteria phylum: pseudomonadota class: betaproteobacteria order: rhodocyclales family: rhodocyclaceae genus: azoarcus species: azoarcus tolulyticuszhou et al., 1995