[viruses]
   Order Caudovirales
     Family Podoviridae
       Subfamily Picovirinae
         1 Genus Cepunavirus
         2 Genus Negarvirus [monotypic]
         3 Genus Rosenblumvirus
         4 Genus Salasvirus
         5 Actinomyces virus Av1
         6 Mycoplasma virus P1