Arcanobacterium haemolyticum Arcanobacterium haemolyticum colonies on a blood agar plate: Beta-hemolysis is demonstrated with transmitted light. Scientific classification Domain: Bacteria Phylum: Actinobacteria Class: Actinobacteria Order: Actinomycetales Family: Actinomycetaceae Genus: Arcanobacterium Species: A. haemolyticum Binomial name Arcanobacterium haemolyticum (ex Mac Lean et al., 1946) Collins et al., 1983