Family: Rudiviridae (interim)

This is a summary page created by the ICTV Report Editors using information from associated Taxonomic Proposals and the Master Species List.

Edited by: Mart Krupovic
Posted: April 2023


The family Rudiviridae includes lytic, double-stranded DNA viruses infecting hyperthermophilic archaea of the order Sulfolobales (Table 1.Rudiviridae). The family was assigned to the realm Adnaviria in 2021 (Master Species List 36).

Table 1.Rudiviridae. Characteristics of members of the family Rudiviridae.




Sulfolobus islandicus rod-shaped virus 2 (AJ344259), species Icerudivirus SIRV2, genus Icerudivirus


Filamentous, non-enveloped particle, nucleoprotein core with homodimeric major capsid proteins, terminal fibers


Linear, double-stranded DNA genome of 20–36 kbp

Host range

Hyperthermophilic archaea of the order Sulfolobales


Realm Adnaviria, kingdom Zilligvirae, phylum Taleaviricota, class Tokiviricetes, order Ligamenvirales: 7 genera and 17 species

Rudiviridae genome

Figure 1.Rudiviridae. Genome organisation of a member of the family Rudiviridae. Boxes indicate open reading frames as annotated on GenBank accession AJ344259.

Rudiviridae taxonomy

Figure 2.Rudiviridae. Relationships of the taxa connected to the family Rudiviridae.

Derivation of name

Rudiviridae: from the Latin rudi, meaning "small rod".