Genus: Oscivirus

Genus: Oscivirus

Distinguishing features

The genus is distinguished on the basis of genetic characters.



No details are available on the morphology of the virions. 

Nucleic acid

Genome (Woo et al., 2010): c. 7,640–7,678 nt (5′-UTR: 636–646 nt; ORF: 6,765–6,774 nt; 3′-UTR: 238–256 nt). The location of the cre has not been identified.

Genome organization and replication

Genome layout:


The deduced polyprotein is of 2,255–2,258 aa. The genome encodes a L protein. 1AB remains uncleaved (with myristoylation signal). 2A protein has unknown function.


Viral RNA was detected in faeces of the oriental magpie robin (Copsychus saularis) and the grey-backed thrush (Turdus hortulorum). 

Derivation of names

Osci-: from Oscines (songbirds) from the Latin oscen, 'a songbird'

Species demarcation criteria

There is only a single species in the genus. Oscivirus A includes two genetic virus types classified by means of phylogenetic clustering.

Member species

Exemplar isolate of the species
SpeciesVirus nameIsolateAccession numberRefSeq numberAvailable sequenceVirus Abbrev.
Oscivirus Aoscivirus A; turdivirus 210717GU182408NC_014412Complete genomeOsV-A1
Oscivirus Aoscivirus A2; turdivirus 310878GU182410Complete genomeOsV-A2

Virus names, the choice of exemplar isolates, and virus abbreviations, are not official ICTV designations.