staphylococcus simulans staphylococcus simulans staphylococcus simulans is a gram-positive, coagulase-negative member of the bacterial genus staphylococcus consisting of single, paired, and clustered cocci. staphylococcus simulans scientific classification domain: bacteria phylum: bacillota class: bacilli order: bacillales family: staphylococcaceae genus: staphylococcus species: s. simulans binomial name staphylococcus simulanskloos et al. 1975