ahrensiaceae ahrensiaceae ahrensiaceae is a family of alphaproteobacteria. ahrensiaceae scientific classification domain: bacteria phylum: pseudomonadota class: alphaproteobacteria order: hyphomicrobiales family: ahrensiaceaehördt et al. 2020 genera ahrensia uchino et al. 1999 pseudahrensia jung et al. 2012