 In turn "R. eutropha" was renamed "Wautersia eutropha".Looking at DNA-DNA hybridization and phenotype comparison with "Cupriavidus necator", "W. eutropha" was found to be the same species as previously described "C. necator".Because "C. necator" was named in 1987 far before the name change to "R. eutropha" and "W. eutropha", the name "C. necator" was assigned to "R. eutropha" according to Rule 23a of the International Code of Nomenclature of Bacteria.