massilia aurea massilia aurea massilia aurea is a gram-negative, rod-shaped non-spore-forming motile and strictly aerobic bacterium from the genus massilia and family oxalobacteraceae. it was isolated from the drinking water distribution system in seville, spain. m. aurea produces yellow-pigmented colonies. massilia aurea scientific classification domain: bacteria phylum: pseudomonadota class: betaproteobacteria order: burkholderiales family: oxalobacteraceae genus: massilia species: m. aurea binomial name massilia aureagallego et al. 2006, sp. nov. type strain ap13, ccm 7363, cect 7142, cip 109392, dsm 18055, jcm 13879, strain ap13 etymology the specific name aurea comes from the latin adjective aurea ("golden") which refers to the yellow pigment that m. aurea produces.