A new error correction version of the 2024 ICTV taxonomy is now available online at https://ictv.global/taxonomy. This new version of Master Species List #40v2 is available for download as an Excel Spreadsheet.

The ICTV has published in the Journal of General Virology, summaries of all taxonomic changes that comprise the current (2024) release of the virus taxonomy. These publications, one per ICTV Subcommittee, provide a searchable and citable source of all new and revised virus taxa that were approved by the Executive Committee in the Summer and Fall of 2024 and ratified by the ICTV membership in February, 2025. The updated taxonomy was released as version 40 of the Master Species List.

Information on virus properties, the etymology of taxon names, and virion diagrams have all been updated to coincide with the new release of the virus taxonomy (MSL40).

Diagrams of virion morphology arranged by host and genome type at the family level provide an overview of the diversity of known forms. These diagrams are taken or adapted from the copyrighted ViralZone image library (ViralZone, SIB, Swiss Institute of Bioinformatics, https://viralzone.expasy.org)

Family: Tonesaviridae (Interim Report)

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

Edited by: Luisa Rubino
Posted: March 2025

Summary

The family Tonesaviridae includes ssRNA(+) satellite viruses of plants (Table 1 Tonesaviridae). The family Tonesaviridae was established in 2025 (Master Species List #40).

Family: Tomosaviridae (Interim Report)

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

Edited by: Luisa Rubino
Posted: March 2025

Summary

The family Tomosaviridae includes ssRNA(+) satellite viruses of plants (Table 1 Tomosaviridae). The family Tomosaviridae was established in 2025 (Master Species List #40).

Family: Pamosaviridae (Interim Report)

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

Edited by: Luisa Rubino
Posted: March 2025

Summary

The family Pamosaviridae includes ssRNA(+) satellite viruses of plants (Table 1 Pamosaviridae). The family Pamosaviridae was established in 2025 (Master Species List #40).

Agenda: ICTV Webinar Outline 20250311.pdf

Slides: ICTV Webinar Presentations 20250311.pdf

Video: https://ictv.global/webinar/video_20250311

Family: Eupolintoviridae (Interim Report)

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

Edited by: Arvind Varsani
Posted: November 2024, March 2025

A new version of the Virus Metadata Resource (VMR) spreadsheet (VMR_MSL40.v1.20250307.xlsx) has been released to coincide with release #40 of the Master Species List. This version, released on March, 7, 2025, can be downloaded from https://ictv.global/vmr/current. This release reflects the taxonomic changes incorporated into the new 2024 - 2025 virus taxonomy, provided in MSL40. This version corrects an error in the March 3 file in which 28 new species were missing from the VMR.

We are pleased to announce that Dr Stuart Siddell has been elected as a Life Member of the ICTV, following his nomination by the ICTV President and Data Sec