prosthecomicrobium pneumaticum prosthecomicrobium pneumaticum prosthecomicrobium pneumaticum is an aerobic bacterium from the genus of prosthecomicrobium which has been isolated from freshwater. prosthecomicrobium pneumaticum scientific classification domain: bacteria phylum: pseudomonadota class: alphaproteobacteria order: hyphomicrobiales family: hyphomicrobiaceae genus: prosthecomicrobium species: p. pneumaticum binomial name prosthecomicrobium pneumaticumstaley 1968 type strain atcc 23633, atcc 23633, dsm 8972, ncimb 12774, vkm b-1389