staphylococcus microti staphylococcus microti staphylococcus microti is a gram-positive, coagulase-negative member of the bacterial genus staphylococcus consisting of clustered cocci. this species was originally isolated from viscera of the common vole, microtus arvalis. it is genetically similar to staphylococcus rostri. staphylococcus microti scientific classification domain: bacteria phylum: bacillota class: bacilli order: bacillales family: staphylococcaceae genus: staphylococcus species: s. microti binomial name staphylococcus microtinováková et al. 2010