is a new species which can be differentiated from the other species of the genus by γ-glutamyltransferase activity, nutritional requirements in chemically defined medium, and production of extracellular polysaccharide. These phenotypic characteristics allow to be distinguished among a group of genotypically related species (, and ) with which it shares 69 to 71% deoxyribonucleic acid (DNA) relatedness, (S1 nuclease; DE-81 filter method), with Δ (melting point) values between 3.6 to 5°C. The guanine-plus-cytosine contents of the DNAs of the latter three species are, respectively, 53.2, 53.2, and 52.0 mol%; for the content is 53.0 mol%. The DNA homologies with other species are between 0 and 46 mol%.


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