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Iflavirus infections are limited to arthropods, predominantly within the class Insecta.
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, Laodelphax striatella honeydew virus 1 and Laodelphax striatellus iflavirus 2 (related, unclassified species) are the same species. The Iflaviridae family is expanding rapidly and will likely undergo revision in the near future.
Derivation of names
Ifla: siglum derived from the type species, Infectious flacherie virus.
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