Family: Chuviridae

Genus: Odonatavirus

Distinguishing features

Odonataviruses are primarily distinguished from viruses of other genera in the family based on nucleic acid sequence and organization differences (Di Paola et al., 2022). Members of the genus Odonatavirus have L protein sequences that are >31% identical to each other.

Genome organization and replication

Odonataviruses have nonsegmented circular genomes of 10.8–11.3 kb with three ORFs encoding a glycoprotein (GP), a large (L) protein with an RNA-directed RNA polymerase (RdRP) domain, and a protein of unknown function (Shi et al., 2016, Käfer et al., 2019). The replication cycle of odonataviruses remains to be elucidated.

Biology

Odonataviruses have been associated with odonatan insects:

• Húběi odonate virus 11 (HbOV11) has been associated with unspecified dragonflies/damselflies (Odonata) in China (Shi et al., 2016);
• odonatan chu-related virus 136 (OCrV136) has been associated with whitewater rockmasters (lestoideid Diphlebia lestoides (Selys, 1853)) in Australia (Käfer et al., 2019); and
• odonatan chu-related virus 137 (OCrV137) has been associated with common flatwings (argiolestid Austroargiolestes icteromelas (Selys, 1862)) in Australia (Käfer et al., 2019).

Species demarcation criteria

Members of different species have amino-acid identities complete L sequences of <90% (Di Paola et al., 2022).

Related, unclassified viruses

Virus names and virus abbreviations are not official ICTV designations.