methylomonas methanica methylomonas methanica methylomonas methanica is a gram-negative bacterium that obtains its carbon and energy from methane, a metabolic process called methanotrophy. it is found in lakes, ponds, freshwater sediment and marshy ground. they are motile, the cells are rod-shaped. methylomonas methanica scientific classification domain: bacteria phylum: pseudomonadota class: gammaproteobacteria order: methylococcales family: methylococcaceae genus: methylomonas binomial name methylomonas methanica(ex söhngen 1906) whittenbury and krieg 1984 synonyms bacillus methanicus söhngen 1906 methamonas methanica (söhngen 1906) orla-jensen 1909 pseudomonas methanica (söhngen 1906) krasil’nikov 1949 pseudomonas methanica (söhngen 1906) sensu dworkin and foster 1956 methylomonas methanica (söhngen 1906) leadbetter 1974