[viruses]
   Order Ligamenvirales
     Family Lipothrixviridae
       Genus Betalipothrixvirus
         1 Acidianus filamentous virus 3
         2 Acidianus filamentous virus 6
         3 Acidianus filamentous virus 7
         4 Acidianus filamentous virus 8
         5 Acidianus filamentous virus 9
         6 Sulfolobus islandicus filamentous virusᵀ