[viruses]
   Realm Riboviria
     Order Nidovirales
       Suborder Cornidovirineae [monotypic]
         Family Coronaviridae
           Subfamily Orthocoronavirinae
             Genus Deltacoronavirus
               Subgenus Buldecovirus
                 1 Bulbul coronavirus HKU11ᵀ
                 2 Coronavirus HKU15
                 3 Munia coronavirus HKU13
                 4 White-eye coronavirus HKU16