acetitomaculum ruminis acetitomaculum ruminis acetitomaculum ruminis is a gram-positive bacterium species from the genus of acetitomaculum which has been isolated from the rumen of a bovine in the united states. acetitomaculum ruminis utilize formate, glucose and co2. acetitomaculum ruminis scientific classification domain: bacteria phylum: bacillota class: clostridia order: eubacteriales family: lachnospiraceae genus: acetitomaculum species: a. ruminis binomial name acetitomaculum ruminisgreening and leedle 1995 type strain 139 b, atcc 43876, dsm 5522, kctc 5005, uc 12185 synonyms acetomaculum ruminis