roseomonas mucosa roseomonas mucosa roseomonas mucosa is a species of gram negative, strictly aerobic, coccobacilli-shaped, pink-pigmented bacterium. it was first isolated from blood in 2000. the new species name was first proposed in 2003 and derives from latin mucosa (mucous, slimy), referring to the muccoid, almost runny bacterial colonies. during a survey of 36 strains of roseomonas, r. mucosa was the most common species isolated. roseomonas mucosa scientific classification domain: bacteria phylum: pseudomonadota class: alphaproteobacteria order: rhodospirillales family: acetobacteraceae genus: roseomonas species: r. mucosa binomial name roseomonas mucosahan 2003 a small study of 10 adults and 5 children showed r. mucosa might be able to be used as a treatment for eczema.