Genus: Cripavirus

Genus: Cripavirus

Distinguishing features

Members of the Cripavirus genus exhibit the Type I intergenic untranslated region (IGR) internal ribosome entry site (IRES) structure (Jan et al. 2006).  The type I IRES is characterized by the presence of a conserved consensus bulge sequence (UGAUCU/UGC), absence of a third stem loop in Pseudoknot I, and the presence of a consensus sequence (UUAC) downstream of stem loop I.


See discussion under family description.

Genome organization and replication

See discussion under family description.


See discussion under family description.

Derivation of names

Cripa: derived from the name of the type species of the genus, Cricket paralysis virus

Species demarcation criteria

Sequence identity at the amino acid level between the capsid proteins of isolates and strains of a species is above 90%. Note that by this definition, Nilaparvata lugens C virus is a member of species Cricket paralysis virus.

Member species

Exemplar isolate of the species
SpeciesVirus nameIsolateAccession numberRefSeq numberAvailable sequenceVirus Abbrev.
Aphid lethal paralysis virusaphid lethal paralysis virusAF536531NC_004365Complete genomeALPV
Cricket paralysis viruscricket paralysis virusAF218039NC_003924Complete genomeCrPV
Drosophila C virusDrosophila C virusEBAF014388NC_001834Complete genomeDCV
Rhopalosiphum padi virusRhopalosiphum padi virusAF022937NC_001874Complete genomeRhPV

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

Related, unclassified viruses

Virus name

Accession number

Virus abbreviation

Anopheles C virus



goose faecal-sample dicistrovirus



Nilaparvata lugens C virus



Virus names and virus abbreviations are not official ICTV designations.