Initially, it was placed in the genus "Micrococcus". Perhaps this was a result of a micrococcus obtained from throat cultures. The bacterium "Micrococcus flacidifex danai" also infects larvae. The [[lysostaphin test]] is used to differentiate between "Staphylococcus" and "Micrococcus" bacteria. "Staphylococcus," but "Micrococcus" bacteria are resistant to the chemical. Micrococcus lylae is a gram positive bacterium. Micrococcus roseus is a strictly aerobic organism. The species was formerly called "Micrococcus radiodurans". Most are mesophiles; some, like "Micrococcus antarcticus" (found in Antarctica) are psychrophiles. The normal habitat for this "Micrococcus" species is skin, soil, and water. The normal habitat for this "Micrococcus" species is skin, dust, and water. "Micrococcus luteus" was formerly known as "Micrococcus lysodeikticus". The genus of "Micrococcus" was later renamed "Brucella", in honor of David Bruce. It was first classified as "Micrococcus cinereus" by Alexander von Lingelsheim in 1906. In 1896 he isolated micrococcus catarrhalis that is the cause of laryngitis.