Taxonomic Ranks

The 2020 ICTV taxonomy release (#36) is now available online.

The new 2020 ICTV taxonomy is now available online at The new Master Species List #36 is available for download as an Excel Spreadsheet

This new release contains taxonomic changes approved by the ICTV Executive Committee in October, 2020 and ratified by the ICTV Membership in March, 2021. A paper describing this release has been published in the Virology Division News section of Archives of Virology:

Walker PJ, Siddell SG, Lefkowitz EJ, Mushegian AR, Adriaenssens EM, Alfenas-Zerbini P, Davison AJ, Dempsey DM, Dutilh BE, García ML, Harrach B, Harrison RL, Hendrickson RC, Junglen S, Knowles NJ, Krupovic M, Kuhn JH, Lambert AJ, Łobocka M, Nibert ML, Oksanen HM, Orton RJ, Robertson DL, Rubino L, Sabanadzovic S, Simmonds P, Smith DB, Suzuki N, Van Dooerslaer K, Vandamme AM, Varsani A, Zerbini FM. Changes to virus taxonomy and to the International Code of Virus Classification and Nomenclature ratified by the International Committee on Taxonomy of Viruses (2021). Arch Virol. 2021 Jul 6. doi: 10.1007/s00705-021-05156-1. PMID: 34231026. 

Official taxonomy proposals documenting these and all other taxonomic changes approved by the ICTV since the publication of the 8th ICTV Report can be found at