Taxonomy Browser

Version 2 of MSL38, the 2022 ICTV taxonomy release is now available

A new version (v2) of the  2022 ICTV taxonomy is now available online at The new Master Species List #38 is available for download as an Excel Spreadsheet.

This revised version corrects errors in three taxa:

  1. Change species name 'Alphabaculovirus aucalifonicae' to 'Alphabaculovirus aucalifornicae'
  2. Move/rename the species 'Puahadnavirus gataifale' to 'Seawadnavirus gataifale'
  3. Move/rename the species 'Seawadnavirus katao' to 'Kieseladnavirus katao'

This complete MSL38 release contains taxonomic changes approved by the ICTV Executive Committee in July, 2022 and ratified by the ICTV Membership in March-April, 2023. A paper describing this release, "Recent changes to virus taxonomy ratified by the International Committee on Taxonomy of Viruses (2022)" has been published in Archives of Virology.

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