Major pathogenic species r Staphylococcus(the staphylococcus) o Staphylococcus aureus o Staphylococcus epidermidis o Staphylococcus saprophyticus r Streptococcus(the streptococcus o Streptococcus pyogenes o Streptococcus pneumoniae( the pneumococcus) r Neisseria(the neisseria) o Neisseria meningitidis( the meningococcus o Neisseria gonorrhoeae( the gonococcus)Major pathogenic species Staphylococcus (the staphylococcus) Staphylococcus aureus Staphylococcus epidermidis Staphylococcus saprophyticus Streptococcus (the streptococcus) Streptococcus pyogenes Streptococcus pneumoniae (the pneumococcus) Neisseria (the neisseria) Neisseria meningitidis (the meningococcus) Neisseria gonorrhoeae (the gonococcus)