Streptococcus pyogenes
The saliva of the species "Rhynocoris marginatus" (Fab.) and "Catamirus brevipennis" (Servile) have been studied because of their activity against human pathogenic Gram-negative bacteria (including strains of "Escherichia coli", "Pseudomonas aeruginosa", "Proteus vulgaris", and "Salmonella typhimurium") and the Gram-positive ("Streptococcus pyogenes").