# Summary of taxonomy changes ratified by the International Committee on Taxonomy of Viruses (ICTV) from the Fungal and Protist Viruses Subcommittee, 2025

Sead Sabanadzovic, Chantal Abergel, María A Ayllón, Leticia Botella, Marta Canuti, Yuto Chiba, Jeanmichel Claverie, Robert H.A. Coutts, Stefania Daghino, Livia Donaire, et al.

► To cite this version:

Sead Sabanadzovic, Chantal Abergel, María A Ayllón, Leticia Botella, Marta Canuti, et al. Summary of taxonomy changes ratified by the International Committee on Taxonomy of Viruses (ICTV) from the Fungal and Protist Viruses Subcommittee, 2025. Journal of General Virology, 2025, 106 (7), pp.002115. 10.1099/jgv.0.002115. pasteur-05212165

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# Summary of taxonomy changes ratified by the International Committee on Taxonomy of Viruses (ICTV) from the Fungal and Protist Viruses Subcommittee, 2025

Sead Sabanadzovic¹,²,*, Chantal Abergel³, María A. Ayllón⁴,⁵, Leticia Botella⁶, Marta Canuti⁷, Yuto Chiba⁸, JeanMichel Claverie³, Robert H.A. Coutts⁹, Stefania Daghino¹⁰, Livia Donaire¹¹, Marco Forgia¹², Ondřej Hejna¹³, Jichun Jia¹⁴, Daohong Jiang¹⁵, Ioly Kotta-Loizou⁹, Mart Krupovic¹⁶, Andrew S. Lang¹⁷, Matthieu Legendre³, Shin-Yi Lee Marzano¹⁸, Fan Mu¹⁴, Uri Neri¹⁹, Luca Nerva²⁰, Judit Pénzes²¹, Anna Poimala²², Sofia Rigou³, Yukiyo Sato²³, Wajeeha Shamsi²⁴, Suvi Sutela²², Nobuhiro Suzuki²⁵, Massimo Turina²⁶,²⁷, Syun-ichi Urayama²⁸, Eeva J. Vainio²², Jiatao Xie¹⁵ and ICTV Taxonomy Summary Consortium

## Abstract

*An erratum of this article has been published full details can be found at 10.1099/jgv.0.002144*

The Fungal and Protist Viruses Subcommittee (SC) of the International Committee on Taxonomy of Viruses (ICTV) has received a total of eight taxonomic proposals for the 2024 annual cycle. The extent of proposed changes varied, including nomenclatural updates, creation of new taxa and reorganization of established taxa. Following the ICTV procedures, all proposals were reviewed and voted upon by the members of the Executive Committee with ratification in March 2025. As a result, a total of 52 species in the families *Botourmiaviridae* and *Marnaviridae* were renamed to comply with the mandated binomial format. A new genus has been added to the dsRNA virus family *Amalgaviridae*, while two new families, *Siplalmiviridae* (*Wolframvirales*) and *Mycoalphaviridae* (*Hepelivirales*), were created to classify new groups of positive-sense (+) RNA mycoviruses. The class *Arfiviricetes* (*Cressdnaviricota*) was expanded by a new order *Lineavirales* and a new family *Oomyviridae* of ssDNA viruses. Additionally, a new class *Orpoviricetes* was created in the kingdom *Orthornavirae* to classify a group of bisegmented (+)RNA viruses reported from fungi and oomycetes. Finally, the order *Pimascovirales* was reorganized to better depict evolutionary relationships of pithoviruses and related viruses with large dsDNA genomes. The summary of updates in the taxonomy of fungal and protist viruses presented here is limited to taxa within the remit of this Subcommittee. For information on taxonomy changes on other fungal viruses closely related to animal and/or plant viruses, please see reports from sister ICTV Subcommittees (i.e. Plant Virus SC and Animal dsRNA and ssRNA- Viruses SC).

## INTRODUCTION

The Fungal and Protist Viruses Subcommittee (SC) of the International Committee on Taxonomy of Viruses (ICTV) is tasked with the refinement and development of the taxonomy of fungal and protist viruses. The SC has been recently reorganized to comprise 13 taxon-specific Study Groups (SG) composed of 60 experts from 18 different countries. SGs currently under the remit of this Subcommittee are formally organized at family (*Botourmiaviridae*, *Curvulaviridae*, *Fusariviridae*, *Hypoviridae*, *Marnaviridae*, *Partitiviridae* and *Pithoviridae*), order (*Algavirales*, *Ghabrivirales*, *Imitervirales* and *Wolframvirales*) or phylum (*Ambiviricota*) level. In addition, there is an ad hoc SG dealing with the taxonomy of ‘virophages’. However, the structure of this SC will undergo further changes, including the addition of new taxon-specific expert groups, to reflect our ever-expanding knowledge on the diversity of fungal and protist viruses.

The ICTV Fungal and Protist Viruses SC received a total of eight taxonomic proposals (TaxoProps) for the 2024 annual cycle of taxonomic updates. These proposals are a result of a collaborative effort by a total of 33 scientists, a third of whom are not officially involved in any of the current ICTV SGs. Following the standard ICTV procedures [1], the TaxoProps were reviewed

Received 15 April 2025; Accepted 13 May 2025; Published 25 July 2025

For numbered affiliations see end of the article.

*Correspondence: Sead Sabanadzovic, ssabanadzovic@entomology.msstate.edu

**Abbreviations:** ICTV, International Committee on Taxonomy of Viruses; RdRP, RNA-directed RNA polymerase; SC, Subcommittee; SG, Study Groups.

Supplementary files are available with the online version of this article.

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and voted upon by the Executive Committee during the Annual Meeting (EC56) held in Bari (Italy) in August 2024, revised when needed and further scrutinized during the ratification voting period by all ICTV members in March 2025. All eight proposals were approved by a majority vote. Here, we briefly report on recent changes in the taxonomy of viruses belonging to taxa under the remit of this ICTV SC.

The extent of proposed changes varied among the different TaxoProps. Namely, the adoption of the binomial format for species names, mandated by the ICTV [2, 3], was completed for the families *Botourmiaviridae* (total=32 species) [4] and *Marnaviridae* (total=20 species). In both cases, the Latinized binomial format was preferred over the 'freeform' option. The family *Amalgaviridae* was expanded by the creation of a third genus, *Unirnavirus*, containing 13 new species of dsRNA viruses with a non-segmented genome [5, 6]. Furthermore, the order *Wolframvirales* was expanded with 1 new family, *Siplalmiviridae* (3 genera, 16 species), including a group of recently discovered viruses encoding a narnavirus-like RNA-directed RNA polymerase (RdRP) divided into two genomic segments [7–10]. Additionally, a new family *Mycoalphaviridae* (two genera, seven species) composed of positive-sense RNA viruses with an RdRP related to that of members of the order *Hepeliviriales* was created [11, 12]. Concerning higher-rank taxa, a new order, *Lineavirales*, including 1 family, 3 genera and 38 species of viruses with linear ssDNA genomes [13, 14], was included in the class *Arfiviricetes* of the phylum *Cressdnaviricota* [15]. Furthermore, a new 'floating' class *Orpoviricetes* (including 2 orders, 5 families, 7 genera and 26 species) in the kingdom *Orthornavirae* was created to classify a group of recently discovered bisegmented positive-sense RNA viruses of fungi and oomycetes characterized by highly diverged RdRPs [16–18]. Finally, the order *Pimascovirales*, after recent changes [19], was further reorganized to include several new taxa (one suborder, one family, one genus and one species), whereas the existing family *Pithoviridae* has been split into two subfamilies, and two alphacedratvirus species have been renamed. The revised taxonomy more adequately reflects the evolutionary relationships between the original pithovirus [20] and members of the families *Pithoviridae*, *Orpheoviridae* and *Hydriviridae* compared to viruses belonging to other families in the order.

For a complete update on the taxonomy of fungal and protist viruses, please also see reports from other ICTV SC, in particular, Plant Viruses SC [21] and Animal dsRNA and ssRNA(-) Viruses SC [22]. Final versions of all TaxoProps ratified in March 2025 are publicly available on the ICTV website (https://ictv.global/files/proposals/approved). A file including all the Tables of taxonomic changes below is available as a supplementary file to this article.

# MAIN TEXT

## CONTENTS

2024.001F.Botourmiaviridae_spren

2024.002F.Marnaviridae_spren

2024.003F.Splipalmiviridae_newfam

2024.004F.Oomyviridae_newfam

2024.005F.Pimascovirales_reorg

2024.006F.Amalgaviridae_newgen

2024.007F.Mycoalphaviridae_newfam

2024.008F.Orpoviricetes_newclass

### 2024.001F.Botourmiaviridae_spren

**Title:** Change the name of 32 species of 6 genera of the family *Botourmiaviridae*

**Authors:** Ayllón MA (mariaangeles.ayllon@upm.es), Turina M, Donaire L, Nerva L, Marzano SYL, Xie J, Jiang D

## Summary

### Taxonomic rank(s) affected

Species

### Description of current taxonomy

Species correctly classified inside the genus but with outdated names

### Proposed taxonomic change(s)

We propose to change the name of 32 species in the genera *Botoulivirus*, *Magoulivirus*, *Ourmiavirus*, *Penoulivirus*, *Rhizoulivirus* and *Scleroulivirus* in the family *Botourmiaviridae*.

### Justification

The names of 32 species in the genera *Botoulivirus*, *Magoulivirus*, *Ourmiavirus*, *Penoulivirus*, *Rhizoulivirus* and *Scleroulivirus* in the family *Botourmiaviridae* were not compliant with the binomial format, so in this proposal, we made changes to meet the ICTV criteria in naming species.

**Submitted:** 11/06/24
<table><caption>**Table 1.** Botourmiaviridae, 32 rename taxa*</caption><thead><tr><td>Operation</td><td>Rank</td><td>New taxon name</td><td>Previous taxon name</td></tr></thead><tbody><tr><td>Rename taxon</td><td>Species</td><td>Botoulivirus botrytidis</td><td>Botrytis botoulivirus</td></tr><tr><td>Rename taxon</td><td>Species</td><td>Botoulivirus epicocci</td><td>Epicoccum botoulivirus</td></tr><tr><td>Rename taxon</td><td>Species</td><td>Botoulivirus alphasclerotiniae</td><td>Sclerotinia botoulivirus 2</td></tr><tr><td>Rename taxon</td><td>Species</td><td>Botoulivirus betasclerotiniae</td><td>Sclerotinia botoulivirus 3</td></tr><tr><td>Rename taxon</td><td>Species</td><td>Magoulivirus acremonii</td><td>Acremonium magoulivirus</td></tr><tr><td>Rename taxon</td><td>Species</td><td>Magoulivirus plasmoparae</td><td>Cladosporium magoulivirus 1</td></tr><tr><td>Rename taxon</td><td>Species</td><td>Magoulivirus cladosporii</td><td>Cladosporium magoulivirus 2</td></tr><tr><td>Rename taxon</td><td>Species</td><td>Magoulivirus colletotrichi</td><td>Colletotrichum magoulivirus</td></tr><tr><td>Rename taxon</td><td>Species</td><td>Magoulivirus oryzae</td><td>Magnaporthe magoulivirus 1</td></tr><tr><td>Rename taxon</td><td>Species</td><td>Magoulivirus penicillii</td><td>Penicillium magoulivirus</td></tr><tr><td>Rename taxon</td><td>Species</td><td>Magoulivirus phaeoacremonii</td><td>Phaeoacremonium magoulivirus</td></tr><tr><td>Rename taxon</td><td>Species</td><td>Magoulivirus rhizoctoniae</td><td>Rhizoctonia magoulivirus 1</td></tr><tr><td>Rename taxon</td><td>Species</td><td>Ourmiavirus manihoti</td><td>Cassava virus C</td></tr><tr><td>Rename taxon</td><td>Species</td><td>Ourmiavirus pruni</td><td>Epirus cherry virus</td></tr><tr><td>Rename taxon</td><td>Species</td><td>Ourmiavirus cucurbitae</td><td>Ourmia melon virus</td></tr><tr><td>Rename taxon</td><td>Species</td><td>Penoulivirus aspergilli</td><td>Aspergillus penoulivirus</td></tr><tr><td>Rename taxon</td><td>Species</td><td>Penoulivirus cladosporii</td><td>Cladosporium penoulivirus</td></tr><tr><td>Rename taxon</td><td>Species</td><td>Penoulivirus epicocci</td><td>Epicoccum penoulivirus</td></tr><tr><td>Rename taxon</td><td>Species</td><td>Penoulivirus oryzae</td><td>Magnaporthe penoulivirus</td></tr><tr><td>Rename taxon</td><td>Species</td><td>Penoulivirus neofusicocci</td><td>Neofusicoccum penoulivirus</td></tr><tr><td>Rename taxon</td><td>Species</td><td>Penoulivirus penicillii</td><td>Penicillium penoulivirus</td></tr><tr><td>Rename taxon</td><td>Species</td><td>Penoulivirus phaeoacremonii</td><td>Phaeoacremonium penoulivirus</td></tr><tr><td>Rename taxon</td><td>Species</td><td>Penoulivirus phomae</td><td>Phoma penoulivirus</td></tr><tr><td>Rename taxon</td><td>Species</td><td>Penoulivirus phomopsis</td><td>Phomopsis penoulivirus</td></tr><tr><td>Rename taxon</td><td>Species</td><td>Penoulivirus pyriculariae</td><td>Pyricularia penoulivirus</td></tr><tr><td>Rename taxon</td><td>Species</td><td>Penoulivirus sclerotiniae</td><td>Sclerotinia penoulivirus</td></tr><tr><td>Rename taxon</td><td>Species</td><td>Rhizoulivirus rhizoctoniae</td><td>Rhizoctonia rhizoulivirus</td></tr><tr><td>Rename taxon</td><td>Species</td><td>Scleroulivirus cladosporii</td><td>Cladosporium scleroulivirus</td></tr><tr><td>Rename taxon</td><td>Species</td><td>Scleroulivirus pyriculariae</td><td>Pyricularia scleroulivirus 3</td></tr><tr><td>Rename taxon</td><td>Species</td><td>Scleroulivirus sclerotiniae</td><td>Sclerotinia scleroulivirus 1</td></tr><tr><td>Rename taxon</td><td>Species</td><td>Scleroulivirus alphaglycinae</td><td>Soybean scleroulivirus 1</td></tr><tr><td>Rename taxon</td><td>Species</td><td>Scleroulivirus betaglycinae</td><td>Soybean scleroulivirus 2</td></tr></tbody></table>

2024.002F.Marnaviridae_spren

Title: Rename 20 species within family *Marnaviridae*

Author: Lang AS (aslang@mun.ca)

<footnote>*Source/full text: https://ictv.global/ictv/proposals/2024.001F.Botourmiaviridae_spren.zip</footnote>
## Summary

### Taxonomic rank(s) affected

Species in the family.

### Description of current taxonomy

The family *Marnaviridae* currently includes 7 genera and 20 species with inadequate nomenclature.

### Proposed taxonomic change(s)

Changes in the names of all 20 currently classified species are proposed to adhere to newly adopted binomial nomenclatural standards/formats.

### Justification

Proposed changes are required to comply with binomial species nomenclature mandated by the ICTV.

**Submitted:** 18/04/24; **Revised:** 17/10/24

<table><caption>Table 2. *Marnaviridae*, 20 rename taxa*</caption><thead><tr><td>Operation</td><td>Rank</td><td>New taxon name</td><td>Previous taxon name</td></tr></thead><tbody><tr><td>Rename taxon</td><td>Species</td><td>Bacillarnavirus yujii</td><td>Chaetoceros socialis forma radians RNA virus 1</td></tr><tr><td>Rename taxon</td><td>Species</td><td>Bacillarnavirus setoensis</td><td>Chaetoceros tenuissimus RNA virus 01</td></tr><tr><td>Rename taxon</td><td>Species</td><td>Bacillarnavirus nagasaki</td><td>Rhizosolenia setigera RNA virus 01</td></tr><tr><td>Rename taxon</td><td>Species</td><td>Kusarnavirus tomaruii</td><td>Astarnavirus</td></tr><tr><td>Rename taxon</td><td>Species</td><td>Labyrnavirus takaoii</td><td>Aurantiochytrium single-stranded RNA virus 01</td></tr><tr><td>Rename taxon</td><td>Species</td><td>Locarnavirus jerichoensis</td><td>Jericarnavirus B</td></tr><tr><td>Rename taxon</td><td>Species</td><td>Locarnavirus greningerii</td><td>Sanfarnavirus 1</td></tr><tr><td>Rename taxon</td><td>Species</td><td>Locarnavirus derisii</td><td>Sanfarnavirus 2</td></tr><tr><td>Rename taxon</td><td>Species</td><td>Locarnavirus rohweri</td><td>Sanfarnavirus 3</td></tr><tr><td>Rename taxon</td><td>Species</td><td>Marnavirus taichanarum</td><td>Heterosigma akashiwo RNA virus</td></tr><tr><td>Rename taxon</td><td>Species</td><td>Salisharnavirus vlokiae</td><td>Britarnavirus 1</td></tr><tr><td>Rename taxon</td><td>Species</td><td>Salisharnavirus britensis</td><td>Britarnavirus 4</td></tr><tr><td>Rename taxon</td><td>Species</td><td>Salisharnavirus mirandaeae</td><td>Palmarnavirus 128</td></tr><tr><td>Rename taxon</td><td>Species</td><td>Salisharnavirus stewardii</td><td>Palmarnavirus 473</td></tr><tr><td>Rename taxon</td><td>Species</td><td>Sogarnavirus gustavseniae</td><td>Britarnavirus 2</td></tr><tr><td>Rename taxon</td><td>Species</td><td>Sogarnavirus kitsilanoensis</td><td>Britarnavirus 3</td></tr><tr><td>Rename taxon</td><td>Species</td><td>Sogarnavirus tomaruii</td><td>Chaetarnavirus 2</td></tr><tr><td>Rename taxon</td><td>Species</td><td>Sogarnavirus kimuraei</td><td>Chaetenuissarnavirus II</td></tr><tr><td>Rename taxon</td><td>Species</td><td>Sogarnavirus culleyi</td><td>Jericarnavirus A</td></tr><tr><td>Rename taxon</td><td>Species</td><td>Sogarnavirus palmerensis</td><td>Palmarnavirus 156</td></tr></tbody></table>

## 2024.003F.Splipalmiviridae_newfam

**Title:** Create 1 new family, including 3 new genera and 16 new species, in the order *Wolframvirales* (class *Amabiliviricetes*, phylum *Lenarviricota*, kingdom *Orthornavirae* and realm *Riboviria*)

**Authors:** Sato Y, Daghino S, Chiba Y, Urayama S, Xie J, Ayllón MA, Suzuki N, Turina M (massimo.turina@ipsp.cnr.it)

## Summary

### Taxonomic rank(s) affected

Family, genus and species

### Description of current taxonomy

Currently unclassified

<footnote>*Source/full text: https://ictv.global/ictv/proposals/2024.002F.Marnaviridae_spren.zip</footnote>
## Proposed taxonomic change(s)

We propose to create a new family *Splipalmiviridae*, including 3 new genera which collectively accommodate 16 new species, in the order *Wolframvirales*.

## Justification

The order *Wolframvirales* currently includes one family *Narnaviridae*. Members of the family *Narnaviridae* have non-segmented positive-sense RNA genomes, each encoding an RdRP. Recently found unclassified splipalmiviruses are phylogenetically close to narnavirids but carry divided RdRPs encoded by two independent genomic segments. Considering the phylogenetic proximity but the different RdRP-encoding strategy compared to narnavirids, we propose to create the new family *Splipalmiviridae* for splipalmiviruses, in the order *Wolframvirales*.

Submitted: 20/06/24

<table><caption>**Table 3.** *Splipalmiviridae*, 20 new taxa*</caption><thead><tr><th>Operation</th><th>Rank</th><th>New taxon name</th><th>Exemplar</th><th>Accession</th></tr></thead><tbody><tr><td>New taxon</td><td>Family</td><td>Splipalmiviridae</td><td></td><td></td></tr><tr><td>New taxon</td><td>Genus</td><td>Jakapalmivirus</td><td></td><td></td></tr><tr><td>New taxon</td><td>Species</td><td>Jakapalmivirus sclerotiniae</td><td>Botrytis cinerea binarnavirus 5</td><td>RNA1: MN619799; RNA2: MT711187</td></tr><tr><td>New taxon</td><td>Species</td><td>Jakapalmivirus bremiae</td><td>Bremia lactucae associated splipalmivirus 1</td><td>RNA1: MN565689; RNA2: MZ926717; RNA3: OR060921</td></tr><tr><td>New taxon</td><td>Species</td><td>Jakapalmivirus cinereae</td><td>Botrytis cinerea binarnavirus 1</td><td>RNA1: MN619795; RNA2: MT711186</td></tr><tr><td>New taxon</td><td>Species</td><td>Jakapalmivirus botritidis</td><td>Botrytis cinerea binarnavirus 2</td><td>RNA1: MN619796; RNA2: MT119676</td></tr><tr><td>New taxon</td><td>Species</td><td>Jakapalmivirus ibericum</td><td>downy mildew lesion associated splipalmivirus 3</td><td>RNA1: MN539820; RNA2: OQ980200; RNA3: OQ980201</td></tr><tr><td>New taxon</td><td>Species</td><td>Jakapalmivirus italiense</td><td>downy mildew lesion associated splipalmivirus 4</td><td>RNA1: MN539821; RNA2: OQ980202; RNA3: OQ980203</td></tr><tr><td>New taxon</td><td>Genus</td><td>Divipalmivirus</td><td></td><td></td></tr><tr><td>New taxon</td><td>Species</td><td>Divipalmivirus italiense</td><td>downy mildew lesion associated splipalmivirus 7</td><td>RNA1: MN539824; RNA2: OQ990757</td></tr><tr><td>New taxon</td><td>Species</td><td>Divipalmivirus aspergilli</td><td>Aspergillus fumigatus narnavirus 2</td><td>RNA1: LC553684; RNA2: LC553685; RNA3: LC553686</td></tr><tr><td>New taxon</td><td>Species</td><td>Divipalmivirus cryphonectriae</td><td>Cryphonectria naterciae splipalmivirus 1</td><td>RNA1: LC634419; RNA2: LC634420; RNA3: LC634421; RNA4: LC649880</td></tr><tr><td>New taxon</td><td>Species</td><td>Divipalmivirus diplodiae</td><td>Diplodia seriata splipalmivirus 1</td><td>RNA1: OM837803; RNA2: OM837804; RNA3: OM837805</td></tr><tr><td>New taxon</td><td>Species</td><td>Divipalmivirus suilli</td><td>Suillus luteus narnavirus 4</td><td>RNA1: OQ862540; RNA2: OQ862539</td></tr><tr><td>New taxon</td><td>Species</td><td>Divipalmivirus japonicum</td><td>Aspergillus flavus narnavirus 1</td><td>RNA1: LC763252; RNA2: LC763253; RNA3: LC763254; RNA4: LC763255</td></tr><tr><td>New taxon</td><td>Genus</td><td>Delepalmivirus</td><td></td><td></td></tr><tr><td>New taxon</td><td>Species</td><td>Delepalmivirus ibericum</td><td>downy mildew lesion associated splipalmivirus 20</td><td>RNA1: MN539837; RNA2: OQ990758; RNA3: OQ990759</td></tr><tr><td>New taxon</td><td>Species</td><td>Delepalmivirus oidiiodendri</td><td>Oidiiodendron maius splipalmivirus 1</td><td>RNA1: MN736964; RNA2: MN736965; RNA3: MW988098</td></tr><tr><td>New taxon</td><td>Species</td><td>Delepalmivirus magnaporthae</td><td>Magnaporthe oryzae narnavirus 1</td><td>RNA1: LC553711; RNA2: LC553710</td></tr><tr><td>New taxon</td><td>Species</td><td>Delepalmivirus sclerotiniae</td><td>Sclerotinia sclerotiorum narnavirus 5</td><td>RNA1: OK573450; RNA2: OK573451</td></tr></tbody></table>

## 2024.004F.Oomyviridae_newfam

**Title:** Create a new order, *Lineavirales*, and a new family, *Oomyviridae*, with 3 genera and 38 species in the class *Arfiviricetes* of the phylum *Cressdnaviricota*

**Authors:** Canuti M (marta.canuti@gmail.com), Pénzes J (judit.penzes@tamu.edu)

<footnote>*Source/full text: https://ictv.global/ictv/proposals/2024.003F.Splipalmiviridae_newfam.zip</footnote>
**Summary**

In 2013, a virus was discovered that was considered to be a 'hybrid' between a parvovirus and a circovirus ('parvovirus-like' hybrid virus). With the increased use of metagenomics, several recent publications have described similar viruses, proposing their classification and erroneously labelling them in GenBank as parvoviruses. This misclassification issue is continuously increasing and is in dire need of being rectified. Here, we show that these viruses comprise a distinct linear ssDNA virus family (*Oomyviridae*) within the *Cressdnaviricota* and that their unique features and phylogenetic relationships with other members of the class *Arfiviricetes* are strong reasons to include these viruses in a distinct order, for which we propose the name *Lineavirales*, owing to their linear genome. We also show that, although most of these viruses were identified in samples collected from animals, their likely hosts are organisms of the eukaryotic clade Stramenopiles (SAR supergroup).

**Submitted:** 09/06/24; **Revised:** 28/10/24

<caption>**Table 4.** *Oomyviridae*, 43 new taxa*. Table too large, see supplementary information sheet supp_info_tab_4</caption>

**2024.005F.Pimascovirales_reorg**

**Title:** Creation of a new suborder within the *Pimascovirales* to position and name pithovirus-related isolates

**Authors:** Claverie JM (Claverie@igs.cnrs-mrs.fr), Legendre M, Rigou S, Abergel C

**Summary**

**Taxonomic rank(s) affected**

A new suborder, the *Ocovirineae* within the *Pimascovirales*, 3 distinct families: *Pithoviridae*, *Orpheoviridae* and *Hydriviridae*. One family, the *Cedratviridae*, demoted as the new *Orthocedratvirinae* subfamily. Two subfamilies: *Orthopithovirinae* and *Orthocedratvirinae* splitting the *Pithoviridae* family

**Description of current taxonomy**

Previously proposed in proposal #2023.011F by Abrahão and colleagues: two different families: *Pithoviridae* and *Cedratviridae* within the order *Pimascovirales*

**Proposed taxonomic change(s)**

A new suborder, the *Ocovirineae* within the *Pimascovirales*, justified by the need to separate them from the other more distant families (*Marseilleviridae*, *Ascoviridae* and *Iridoviridae*) in the same order. The creation of three distinct families: *Pithoviridae*, *Orpheoviridae* and *Hydriviridae* to acknowledge their large differences in genome sizes and gene contents (and accommodate new isolates). The split of the *Pithoviridae* into two subfamilies: *Orthopithovirinae* and *Orthocedratvirinae* to acknowledge their closer proximity compared to members of the other families listed above.

**Justification**

See above

**Submitted:** 13/03/24; **Revised:** 09/10/24

<table><caption>**Table 5.** *Pimascovirales*, five new taxa*</caption><thead><tr><td>Operation</td><td>Rank</td><td>New taxon name</td><td>Exemplar</td><td>Accession</td></tr></thead><tbody><tr><td>New taxon</td><td>Suborder</td><td>Ocovirineae</td><td></td><td></td></tr><tr><td>New taxon</td><td>Subfamily</td><td>Orthopithovirinae</td><td></td><td></td></tr><tr><td>New taxon</td><td>Family</td><td>Hydriviridae</td><td></td><td></td></tr><tr><td>New taxon</td><td>Genus</td><td>Alphahydrivirus</td><td></td><td></td></tr><tr><td>New taxon</td><td>Species</td><td>Alphahydrivirus permafrostis</td><td>Siberian hydrivirus MAG1 (R_bin116_k1)</td><td>OW988864</td></tr></tbody></table>

<table><caption>**Table 6.** *Pimascovirales*, three move taxa*</caption><thead><tr><td>Operation</td><td>Rank</td><td>Taxon name</td><td>Old parent taxon</td><td>New parent taxon</td></tr></thead><tbody><tr><td>Move taxon</td><td>Family</td><td>Pithoviridae</td><td>Pimascovirales</td><td>Ocovirineae</td></tr><tr><td>Move taxon</td><td>Family</td><td>Orpheoviridae</td><td>Pimascovirales</td><td>Ocovirineae</td></tr></tbody></table>

Continued

<footnote>*Source / full text: https://ictv.global/ictv/proposals/2024.004F.Oomyviridae_newfam.zip</footnote>
<table><caption>**Table 6. Continued**</caption><thead><tr><td>Operation</td><td>Rank</td><td>Taxon name</td><td>Old parent taxon</td><td>New parent taxon</td></tr></thead><tbody><tr><td>Move taxon</td><td>Genus</td><td>Alphapithovirus</td><td>Pithoviridae</td><td>Orthopithovirinae</td></tr></tbody></table>

<table><caption>**Table 7. Pimascovirales, two rename taxa***</caption><thead><tr><td>Operation</td><td>Rank</td><td>New taxon name</td><td>Previous taxon name</td></tr></thead><tbody><tr><td>Rename taxon</td><td>Species</td><td>Alphacedratvirus aljazairmassiliense</td><td>Alphacedratvirus aljazairense</td></tr><tr><td>Rename taxon</td><td>Species</td><td>Alphacedratvirus francolausannense</td><td>Alphacedratvirus franciense</td></tr></tbody></table>

<table><caption>**Table 8. Pimascovirales, one demote taxon***</caption><thead><tr><td>Operation</td><td>Old rank (name)</td><td>New rank (name)</td></tr></thead><tbody><tr><td>Demote taxon</td><td>Family (Cedratviridae)</td><td>Subfamily (Orthocedratvirinae)</td></tr></tbody></table>

*Source/full text: https://ictv.global/ictv/proposals/2024.005F.Pimascovirales_reorg.zip

## 2024.006F.Amalgaviridae_newgen

**Title:** Create a new genus *Unirnavirus* to accommodate 13 new species within family *Amalgaviridae*

**Authors:** Kotta-Loizou I (i.kotta-loizou13@imperial.ac.uk), Coutts RHA

### Summary

**Taxonomic rank(s) affected**

Family *Amalgaviridae*

**Description of current taxonomy**

Family *Amalgaviridae* accommodates two genera, *Amalgavirus* and *Zybavirus*

**Proposed taxonomic change(s)**

Within family *Amalgaviridae*, establishing a new genus *Unirnavirus* to accommodate 13 new species

**Justification**

Sequence demarcation and phylogenetic analysis, genome organization and host range

**Submitted:** 20/06/24

<table><caption>**Table 9. Amalgaviridae, 14 new taxa***</caption><thead><tr><td>Operation</td><td>Rank</td><td>New taxon name</td><td>Exemplar</td><td>Accession</td></tr></thead><tbody><tr><td>New taxon</td><td>Genus</td><td>Unirnavirus</td><td></td><td></td></tr><tr><td>New taxon</td><td>Species</td><td>Unirnavirus aldianthicolae</td><td>Alternaria dianthicola dsRNA virus 1</td><td>MT241326</td></tr><tr><td>New taxon</td><td>Species</td><td>Unirnavirus allongipei</td><td>Alternaria longipes non-segmented mycovirus 1</td><td>KJ817371</td></tr><tr><td>New taxon</td><td>Species</td><td>Unirnavirus aspergilli</td><td>Aspergillus lentulus non-segmented dsRNA virus 1</td><td>LC553704</td></tr><tr><td>New taxon</td><td>Species</td><td>Unirnavirus beauveriae</td><td>Beauveria bassiana non-segmented RNA virus 1</td><td>LN610699</td></tr><tr><td>New taxon</td><td>Species</td><td>Unirnavirus cogleosporioidei</td><td>Colletotrichum gloeosporioides RNA virus 1</td><td>ON887156</td></tr><tr><td>New taxon</td><td>Species</td><td>Unirnavirus cohigginsiani</td><td>Colletotrichum higginsianum non-segmented dsRNA virus 1</td><td>KM923925</td></tr><tr><td>New taxon</td><td>Species</td><td>Unirnavirus combuense</td><td>Combu double-strand RNA mycovirus</td><td>MH990637</td></tr><tr><td>New taxon</td><td>Species</td><td>Unirnavirus fusarii</td><td>Fusarium culmorum virus 1</td><td>MN187541</td></tr><tr><td>New taxon</td><td>Species</td><td>Unirnavirus pripenicillii</td><td>Penicillium janczewskii Beauveria bassiana-like virus 1</td><td>KT601106</td></tr><tr><td>New taxon</td><td>Species</td><td>Unirnavirus prustilaginoideae</td><td>Ustilaginoidea virens unassigned RNA virus HNND 1</td><td>KR106133</td></tr><tr><td>New taxon</td><td>Species</td><td>Unirnavirus secupenicillii</td><td>Penicillium citrinum non-segmented RNA virus 1</td><td>OP103962</td></tr><tr><td>New taxon</td><td>Species</td><td>Unirnavirus secustilaginoideae</td><td>Ustilaginoidea virens RNA virus M-A</td><td>ON791647</td></tr><tr><td>New taxon</td><td>Species</td><td>Unirnavirus trichodermae</td><td>Trichoderma harzianum mycovirus 1</td><td>MH155602</td></tr></tbody></table>

*Source/full text: https://ictv.global/ictv/proposals/2024.006F.Amalgaviridae_newgen.zip
## 2024.007F.Mycoalphaviridae_newfam

**Title:** Create one new family (*Mycoalphaviridae*) including two new genera (*Alphasclernavirus* and *Betasclernavirus*) and seven new species

**Authors:** Xie J (jiataoxie@mail.hzau.edu.cn), Mu F, Jia J, Jiang D, Sabanadzovic S

### Summary

**Taxonomic rank(s) affected**

*Hepelivirales*

**Description of current taxonomy**

The order including 4 families and 27 species.

**Proposed taxonomic change(s)**

Create one new family (*Mycoalphaviridae*) including two new genera (*Alphasclernavirus* and *Betasclernavirus*) and seven new species.

**Justification**

Members in the proposed family *Mycoalphaviridae* have a single-stranded positive-sense RNA genome of 6.0 to 10.1 kb with one or more ORFs. Members of the proposed family have only been identified in fungi and oomycetes. The RNA-directed RNA polymerase (RdRP) of viruses in the family *Mycoalphaviridae* has the closest similarity to viruses of the order *Hepelivirales*, though the identity is lower than 20%. These low-level amino acid sequence identities, the different host ranges and the result of phylogenetic analysis both support the establishment of the new family. The proposed family *Mycoalphaviridae* includes two proposed genera *Alphasclernavirus* and *Betasclernavirus* that accommodate three and seven species, respectively. The RdRP amino acid sequence identity between members of different genera and between members of different species is lower than 26% and 50%, respectively, in the family.

**Submitted:** 19/05/24 ; **Revised:** 18/10/24

<table><caption>**Table 10.** *Mycoalphaviridae*, 10 new taxa*</caption><thead><tr><td>Operation</td><td>Rank</td><td>New taxon name</td><td>Exemplar</td><td>Accession</td></tr></thead><tbody><tr><td>New taxon</td><td>Family</td><td>Mycoalphaviridae</td><td></td><td></td></tr><tr><td>New taxon</td><td>Genus</td><td>Alphasclernavirus</td><td></td><td></td></tr><tr><td>New taxon</td><td>Species</td><td>Alphasclernavirus alphasclerotiniae</td><td>Sclerotinia sclerotiorum mycoalphavirus virus 1</td><td>MT706025</td></tr><tr><td>New taxon</td><td>Species</td><td>Alphasclernavirus betasclerotiniae</td><td>Sclerotinia sclerotiorum RNA virus L</td><td>EU779934</td></tr><tr><td>New taxon</td><td>Genus</td><td>Betasclernavirus</td><td></td><td></td></tr><tr><td>New taxon</td><td>Species</td><td>Betasclernavirus alphafusarii</td><td>Fusarium graminearum alphavirus-like virus 1</td><td>MN400076</td></tr><tr><td>New taxon</td><td>Species</td><td>Betasclernavirus botrytidis</td><td>Botrytis cinerea alpha-like virus 1</td><td>MN625250</td></tr><tr><td>New taxon</td><td>Species</td><td>Betasclernavirus betafusarii</td><td>Fusarium sacchari alphavirus-like virus 1</td><td>MN295968</td></tr><tr><td>New taxon</td><td>Species</td><td>Betasclernavirus betasclerotii</td><td>Sclerotium rolfsii alphavirus-like virus 1</td><td>MH766488</td></tr><tr><td>New taxon</td><td>Species</td><td>Betasclernavirus alphasclerotii</td><td>Sclerotium rolfsii alphavirus-like virus 3</td><td>MH766490</td></tr></tbody></table>

## 2024.008F.Orpoviricetes_newclass

**Title:** Create a new class, *Orpoviricetes*, including two new orders, four families, seven genera and 26 new species in the kingdom *Orthornavirae* (realm *Riboviria*)

**Authors:** Botella L, Turina M, Hejna O, Krupovic M, Neri U, Poimala A, Shamsi W, Sabanadzovic S, Sutela S, Vainio E, Forgia M (marco.forgia@ipsp.cnr.it)

### Summary

**Taxonomic rank(s) affected**

*Riboviria* and *Orthornavirae*

**Description of current taxonomy**

The kingdom *Orthornavirae* includes six phyla which were established based on phylogenetic analysis of the RdRP and comparative analysis of the viral genomes and encoded proteins.

**Proposed taxonomic change(s)**

<footnote>*Source/full text: https://ictv.global/ictv/proposals/2024.007F.Mycoalphaviridae_newfam.zip</footnote>
Creation of a new class *Orpoviricetes*, 2 new orders, 4 families and 7 genera which collectively accommodate 26 new species for ormycoviruses, recently identified RNA viruses that infect fungi and oomycetes. These viruses have genomes that consist of two monocistronic ssRNA segments, with RNA1 encoding a putative RdRP and RNA2 encoding a hypothetical protein with an unknown function.

**Justification**

Viruses from the kingdom *Orthornavirae*, which encompasses RNA viruses that encode RNA-directed RNA polymerases (RdRPs), generally have a highly conserved motif C. This motif, often containing the core amino acid triplet GDD, is critical for the catalytic activity of the RdRP. Other triplets more rarely occurring are NDD, SDD, GDN, IDD, ADN and ADD (in order of frequency; [18]). However, ormycoviruses exhibit unique variations in the core amino acid triad of motif C (e.g. NDD, GDQ and HDD) not found in other RNA viruses. Based on the significant variations in the conserved motif C and the high divergence from other RNA viruses (not conserved enough to be retrieved by BLAST searches using any of the RdRP encoded by viruses classified in the six currently recognized phyla), there is a strong case for considering ormycoviruses as members of, at least, a distinct class. Variations within the C motifs are rare but not unprecedented in other RNA viruses, so there is still a need to carry out phylogenetic and structural analyses to confirm whether ormycoviruses have diverged from viruses within existing phyla or have diverged prior to the radiation of viruses classified in the six currently established phyla. Therefore, as an initial step in the official classification of these viruses, we propose to classify them within a new class not assigned to an existing phylum within the kingdom *Orthornavirae*. This classification would reflect their unique evolutionary pathway and potentially distinct biological characteristics.

**Submitted:** 20/06/24; **Revised:** 17/12/24

<table><caption>**Table 11.** *Orpoviricetes*, 40 new taxa*</caption><thead><tr><th>Operation</th><th>Rank</th><th>New taxon name</th><th>Exemplar</th><th>Accession</th></tr></thead><tbody><tr><td>New taxon</td><td>Class</td><td>Orpoviricetes</td><td></td><td></td></tr><tr><td>New taxon</td><td>Order</td><td>Formycovirales</td><td></td><td></td></tr><tr><td>New taxon</td><td>Family</td><td>Gammaarmycoviridae</td><td></td><td></td></tr><tr><td>New taxon</td><td>Genus</td><td>Hormycovirus</td><td></td><td></td></tr><tr><td>New taxon</td><td>Species</td><td>Hormycovirus hortiboleti</td><td>Hortiboletus rubellus ormycovirus 1</td><td>RNA1: PP260025; RNA2: PP260026</td></tr><tr><td>New taxon</td><td>Genus</td><td>Tormycovirus</td><td></td><td></td></tr><tr><td>New taxon</td><td>Species</td><td>Tormycovirus erysiphe</td><td>Erysiphe lesion associated ormycovirus 4</td><td>RNA1: OM272933; RNA2: OM272934</td></tr><tr><td>New taxon</td><td>Species</td><td>Tormycovirus thrichodermae</td><td>Trichoderma tomentosum ormycovirus 1</td><td>RNA1: OQ463855; RNA2: OQ463856</td></tr><tr><td>New taxon</td><td>Species</td><td>Tormycovirus fusarii</td><td>Fusarium graminearum ormycovirus 1</td><td>RNA1: PP658032; RNA2: PP658033</td></tr><tr><td>New taxon</td><td>Species</td><td>Tormycovirus unplasmoparae</td><td>downy mildew lesion associated ormycovirus 4</td><td>RNA1: OM272935; RNA2: OM272936</td></tr><tr><td>New taxon</td><td>Species</td><td>Tormycovirus duaplamoparae</td><td>downy mildew lesion associated ormycovirus 5</td><td>RNA1: OM272937; RNA2: OM272938</td></tr><tr><td>New taxon</td><td>Family</td><td>Betaarmycoviridae</td><td></td><td></td></tr><tr><td>New taxon</td><td>Genus</td><td>Vormycovirus</td><td></td><td></td></tr><tr><td>New taxon</td><td>Species</td><td>Vormycovirus unerysiphe</td><td>Erysiphe lesion associated ormycovirus 2</td><td>RNA1: OM272931; RNA2: OM272932</td></tr><tr><td>New taxon</td><td>Species</td><td>Vormycovirus duerysiphe</td><td>Erysiphe lesion associated ormycovirus 3</td><td>RNA1: OM363731; RNA2: OM363732</td></tr><tr><td>New taxon</td><td>Species</td><td>Vormycovirus plasmoparae</td><td>downy mildew lesion associated ormycovirus 3</td><td>RNA1: OM363729; RNA2: OM363730</td></tr><tr><td>New taxon</td><td>Species</td><td>Vormycovirus verticilli</td><td>Verticillium dahliae ormycovirus 2</td><td>RNA1: OR734292; RNA2: OR734293</td></tr><tr><td>New taxon</td><td>Species</td><td>Vormycovirus ophiocordyceps</td><td>Ophiocordyceps sinensis ormycovirus 1</td><td>RNA1: PP623130; RNA2: PP623131</td></tr><tr><td>New taxon</td><td>Genus</td><td>Stormycovirus</td><td></td><td></td></tr><tr><td>New taxon</td><td>Species</td><td>Stormycovirus starmellariae</td><td>Starmerella bacillaris ormycovirus 1</td><td>RNA1: OM272929; RNA2: OM272930</td></tr><tr><td>New taxon</td><td>Species</td><td>Stormycovirus alariae</td><td>Alaria esculenta RNA virus 1</td><td>RNA1: PP793779; RNA2: PP793780</td></tr><tr><td>New taxon</td><td>Order</td><td>Bormycovirales</td><td></td><td></td></tr></tbody></table>

Continued
<table><caption>**Table 11. Continued**</caption><thead><tr><th>Operation</th><th>Rank</th><th>New taxon name</th><th>Exemplar</th><th>Accession</th></tr></thead><tbody><tr><td>New taxon</td><td>Family</td><td>Alphaarmycoviridae</td><td></td><td></td></tr><tr><td>New taxon</td><td>Genus</td><td>Phormycovirus</td><td></td><td></td></tr><tr><td>New taxon</td><td>Species</td><td>Phormycovirus phytophthora</td><td>Phytophthora cinnamomi ormycovirus 7-5</td><td>RNA1: PP891879; RNA2: PP891862</td></tr><tr><td>New taxon</td><td>Species</td><td>Phormycovirus unphytophthora</td><td>Phytophthora cinnamomi ormycovirus 4-1</td><td>RNA1: PP891842; RNA2: PP891839</td></tr><tr><td>New taxon</td><td>Species</td><td>Phormycovirus duphytophthora</td><td>Phytophthora cinnamomi ormycovirus 5-2</td><td>RNA1: PP891849; RNA2: PP891846</td></tr><tr><td>New taxon</td><td>Species</td><td>Phormycovirus trephytophthora</td><td>Phytophthora cinnamomi ormycovirus 6-4</td><td>RNA1: PP891858; RNA2: PP891851</td></tr><tr><td>New taxon</td><td>Species</td><td>Phormycovirus quaphytophthora</td><td>Phytophthora cinnamomi ormycovirus 11-3</td><td>RNA1: PP891940; RNA2: PP891934</td></tr><tr><td>New taxon</td><td>Species</td><td>Phormycovirus plasmoparae</td><td>downy mildew lesion associated ormycovirus 2</td><td>RNA1: OM262448; RNA2: PP940184</td></tr><tr><td>New taxon</td><td>Genus</td><td>Dormycovirus</td><td></td><td></td></tr><tr><td>New taxon</td><td>Species</td><td>Dormycovirus erysiphe</td><td>Erysiphe lesion associated ormycovirus 1</td><td>RNA1: OM272927; RNA2: OM272928</td></tr><tr><td>New taxon</td><td>Species</td><td>Dormycovirus plasmoparae</td><td>downy mildew lesion associated ormycovirus 1</td><td>RNA1: OM363727; RNA2: OM363728</td></tr><tr><td>New taxon</td><td>Species</td><td>Dormycovirus phytophthora</td><td>Phytophthora cinnamomi ormycovirus 9-16</td><td>RNA1: PP891926; RNA2: PP891910</td></tr><tr><td>New taxon</td><td>Family</td><td>Deltanormycoviridae</td><td></td><td></td></tr><tr><td>New taxon</td><td>Genus</td><td>Bormycovirus</td><td></td><td></td></tr><tr><td>New taxon</td><td>Species</td><td>Bormycovirus verticilli</td><td>Verticillium dahliae ormycovirus 1</td><td>RNA1: OR734290; RNA2: OR734291</td></tr><tr><td>New taxon</td><td>Species</td><td>Bormycovirus unphytophthora</td><td>Phytophthora cinnamomi ormycovirus 1-1</td><td>RNA1: PP891751; RNA2: PP891713</td></tr><tr><td>New taxon</td><td>Species</td><td>Bormycovirus duphytophthora</td><td>Phytophthora cinnamomi ormycovirus 2-25</td><td>RNA1: PP891801; RNA2: PP891774</td></tr><tr><td>New taxon</td><td>Species</td><td>Bormycovirus trephytophthora</td><td>Phytophthora cinnamomi ormycovirus 3-7</td><td>RNA1: PP891825; RNA2: PP891808</td></tr></tbody></table>

**Author affiliations:** ¹Department of Agricultural Science and Plant Protection, Mississippi State University, Mississippi, USA; ²Institute for Genomics, Biocomputing and Biotechnology, Mississippi State University, Mississippi, USA; ³Information Génomique & Structurale, UMR7256, CNRS & Aix-Marseille Université, Marseille, IMM, IM2B, IOM, Marseille, France; ⁴Centro de Biotecnología y Genómica de Plantas, Universidad Politécnica de Madrid (UPM)—Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (INIA/CSIC), Campus de Montegancedo, Pozuelo de Alarcón, Madrid, Spain; ⁵Departamento de Biotecnología-Biología Vegetal, Escuela Técnica Superior de Ingeniería Agronómica, Alimentaria y de Biosistemas, Universidad Politécnica de Madrid (UPM), Madrid, Spain; ⁶Forest Protection and Wildlife Management Mendel University in Brno, Brno, Czechia; ⁷Department of Veterinary and Animal Sciences, University of Copenhagen, Frederiksberg, Denmark; ⁸School of Agriculture, Meiji University, Kawasaki, Japan; ⁹School of Health, Medicine and Life Sciences, University of Hertfordshire, Hatfield, UK; ¹⁰Institute for Sustainable Plant Protection, National Research Council of Italy, Torino, Italy; ¹¹Centro de Edafología y Biología Aplicada del Segura-CSIC, 30100 Murcia, Spain; ¹²Institute for Sustainable Plant Protection, CNR, Bari, Italy; ¹³Department of Genetics and Biotechnologies, University of South Bohemia, České Budějovice, Czechia; ¹⁴College of Plant Protection, Shanxi Agricultural University, Jinzhong, Shanxi, PR China; ¹⁵College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, PR China; ¹⁶Institut Pasteur, Université Paris Cité, CNRS UMR6047, Archaeal Virology Unit, Paris, France; ¹⁷Department of Biology, Memorial University of Newfoundland, St. John's, Canada; ¹⁸United States Department of Agriculture, Agricultural Research Service, Application Technology Research Unit, Toledo, Ohio, USA; ¹⁹The Shmunis School of Biomedicine and Cancer Research, Tel Aviv University, Israel; ²⁰Council for Agricultural Research and Economics - Research Centre for Viticulture and Enology, Roma, Italy; ²¹Department of Entomology, Texas A&M University, College Station, TX, USA; ²²Natural Resources Institute Finland (Luke), Helsinki, Finland; ²³Department of Biology, Institute for Plant Sciences, University of Cologne, Cologne, Germany; ²⁴Department of Molecular Biology and Genetics, Aarhus University, 8000 Aarhus C, Denmark; ²⁵Institute of Plant Science and Resources, Okayama University, Kurashiki, Japan; ²⁶Institute for Sustainable Plant Protection-URT Brescia, National Research Council of Italy, 25123, Brescia, Italy; ²⁷Department of Plant Protection, School of Agriculture, The University of Jordan, Amman, 11942, Jordan; ²⁸Department of Life and Environmental Sciences, University of Tsukuba, Tsukuba, Japan.

**Keywords:** Acremonium magoulivirus; Alphacedratvirus aljazairense; Alphacedratvirus aljazairmassiliense; Alphacedratvirus franciense; Alphacedratvirus francolausannense; Alphahydrivirus; Alphahydrivirus permafrostis; Alphaarmycoviridae; Alphasclernavirus; Alphasclernavirus alphasclerotiniae; Alphasclernavirus betasclerotiniae; Aspergillus penoulivirus; Astarnavirus; Aurantiochytrium single-stranded RNA virus 01; Avoomyvirus; Avoomyvirus amagae; Avoomyvirus chiwundudae; Avoomyvirus homensis; Avoomyvirus ibuensis; Avoomyvirus kabensis; Avoomyvirus kapangae; Avoomyvirus kifensis; Avoomyvirus kulapukae; Avoomyvirus mantarae; Avoomyvirus meijunae; Avoomyvirus mocensis; Avoomyvirus moengjensis; Avoomyvirus mosidurae; Avoomyvirus mouchlis; Avoomyvirus mucegae; Avoomyvirus myglensis; Avoomyvirus qurwarae; Avoomyvirus tavemmaltae; Avoomyvirus tayumensis; Avoomyvirus tchamosseurae; Avoomyvirus tewensis; Bacillarnavirus nagasakii; Bacillarnavirus setoensis; Bacillarnavirus yujii; Betaarmycoviridae; Betasclernavirus; Betasclernavirus alphafusarii; Betasclernavirus alphasclerotii; Betasclernavirus betafusarii; Betasclernavirus

<footnote>*Source/full text: https://ictv.global/ictv/proposals/2024.008F.Orpoviricetes_newclass.zip</footnote>
betasclerotii; BetascVERNavirus botrytidis; Bormycovirales; Bormycovirus; Bormycovirus duphytophthorae; Bormycovirus trephytophthorae; Bormycovirus unphytophthorae; Bormycovirus verticilli; Botoulivirus alphasclerotiniae; Botoulivirus betasclerotiniae; Botoulivirus botrytidis; Botoulivirus epicocci; Botrytis botoulivirus; Britannavirus 1; Britannavirus 2; Britannavirus 3; Britannavirus 4; Cassava virus C; Chaetarnavirus 2; Chaetenuissarnavirus II; Chaetoceros socialis forma radians RNA virus 1; Chaetoceros tenuissimus RNA virus 01; Cladosporium magoulivirus 1; Cladosporium magoulivirus 2; Cladosporium penoulivirus; Cladosporium scleroulivirus; Colletotrichum magoulivirus; Dele palmivirus; Dele palmivirus ibericum; Dele palmivirus magnaportheae; Dele palmivirus oidiodendri; Dele palmivirus sclerotiniae; Deltanormycoviridae; Divipalmivirus; Divipalmivirus aspergilli; Divipalmivirus cryphonectriae; Divipalmivirus diplodiae; Divipalmivirus italiense; Divipalmivirus japonicum; Divipalmivirus suilli; Dormycovirus; Dormycovirus erysiphe; Dormycovirus phytophthorae; Dormycovirus plasmoparae; Epicoccum botoulivirus; Epicoccum penoulivirus; Epirus cherry virus; Formycovirales; Gammaormycoviridae; Heterosigma akashiwo RNA virus; Hormycovirus; Hormycovirus hortiboleti; Hydriviridae; Jakapalmivirus; Jakapalmivirus botritidis; Jakapalmivirus bremiae; Jakapalmivirus cinereae; Jakapalmivirus ibericum; Jakapalmivirus italiense; Jakapalmivirus sclerotiniae; Jericarnavirus A; Jericarnavirus B; Kusarnavirus tomaruii; Lgybrnavirus takaoii; Lineavirales; Locarnavirus derisii; Locarnavirus greningerii; Locarnavirus jerichoensis; Locarnavirus rohweri; Magnaporthe magoulivirus 1; Magnaporthe penoulivirus; Magoulivirus acremonii; Magoulivirus cladosporii; Magoulivirus colletotrichi; Magoulivirus oryzae; Magoulivirus penicilli; Magoulivirus phaeoacremonii; Magoulivirus plasmoparae; Magoulivirus rhizoctoniae; Marnavirus taichanarum; Mycoalphaviridae; Neofusicoccum penoulivirus; Nicoomyvirus; Nicoomyvirus beschimmelingae; Nicoomyvirus bolorensis; Nicoomyvirus floridurae; Nicoomyvirus hallitusensis; Nicoomyvirus lizumae; Nicoomyvirus llywydnae; Nicoomyvirus moegelae; Nicoomyvirus mohonsis; Nicoomyvirus moisissurensi; Nicoomyvirus moldensis; Nicoomyvirus muffae; Nicoomyvirus peneszensi; Nicoomyvirus plesenae; Nicoomyvirus schimmelae; Nicoomyvirus simensis; Nicoomyvirus svampae; Ocovirineae; Oomyviridae; Orpoviricetes; Orthocedratvirinae; Orthopithovirinae; Ourmia melon virus; Ourmiavirus cucurbitae; Ourmiavirus manihoti; Ourmiavirus pruni; Palmarnavirus 128; Palmarnavirus 156; Palmarnavirus 473; Penicillium magoulivirus; Penicillium penoulivirus; Penoulivirus aspergilli; Penoulivirus cladosporii; Penoulivirus epicocci; Penoulivirus neofusicocci; Penoulivirus oryzae; Penoulivirus penicillii; Penoulivirus phaeoacremonii; Penoulivirus phomae; Penoulivirus phomopsis; Penoulivirus pyriculariae; Penoulivirus sclerotiniae; Phaeoacremonium magoulivirus; Phaeoacremonium penoulivirus; Phoma penoulivirus; Phomosis penoulivirus; Phormycovirus; Phormycovirus phytophthorae; Phormycovirus plasmoparae; Phormycovirus quaphytophthorae; Phormycovirus trephytophthorae; Phormycovirus unphytophthorae; Pimascovirales; Pyricularia penoulivirus; Pyricularia scleroulivirus 3; Rhizoctonia magoulivirus 1; Rhizoctonia rhizoulivirus; Rhizosolenia setigera RNA virus 01; Rhizoulivirus rhizoctoniae; Salisharnavirus britensis; Salisharnavirus mirandaeae; Salisharnavirus stewardii; Salisharnavirus vlokiae; Sanfarnavirus 1; Sanfarnavirus 2; Sanfarnavirus 3; Sclerotinia botoulivirus 2; Sclerotinia botoulivirus 3; Sclerotinia penoulivirus; Sclerotinia scleroulivirus 1; Scleroulivirus alphaglycinae; Scleroulivirus betaglycinae; Scleroulivirus cladosporii; Scleroulivirus pyriculariae; Scleroulivirus sclerotiniae; Sogarnavirus culleyi; Sogarnavirus gustavseniae; Sogarnavirus kimuraei; Sogarnavirus kitsilanoensis; Sogarnavirus palmerensis; Sogarnavirus tomaruii; Soybean scleroulivirus 1; Soybean scleroulivirus 2; Splipalmiviridae; Stormycovirus; Stormycovirus alariae; Stormycovirus starmellariae; Swoomyvirus; Swoomyvirus plijesenensis; Tormycovirus; Tormycovirus duaplasmoparae; Tormycovirus erysiphe; Tormycovirus fusarii; Tormycovirus thrichodermae; Tormycovirus unplasmoparae; Unirnavirus; Unirnavirus allongipei; Unirnavirus aspergilli; Unirnavirus beauveriae; Unirnavirus cogleosporioidei; Unirnavirus cohigginsiani; Unirnavirus combuense; Unirnavirus fusarii; Unirnavirus pripenicillii; Unirnavirus prustilaginoideae; Unirnavirus secupenicillii; Unirnavirus secustilaginoideae; Unirnavirus trichodermae; Vormycovirus; Vormycovirus duerysiphe; Vormycovirus ophiocordyceps; Vormycovirus plasmoparae; Vormycovirus unerysiphe; Vormycovirus verticilli.

ICTV Taxonomy Summary Consortium: Adriaenssens E.M.; Alfenas-Zerbini P.; Aylward F.O.; Freitas-Astúa J.; Hendrickson R.C.; Hughes H.R.; Kuhn J.H.; Lefkowitz E.J.; Lobocka M.; Mayne R.; Mushegian A.R.; Oksanen H.M.; Reyes Muñoz A.; Robertson D.L.; Roux S.; Rubino L.; Simmonds P.; Smith D.B.; Turner D.; Van Doorslaer K; Varsani A.; Zerbini F.M..

Funding Information

S.S. acknowledges support from the Mississippi Agricultural and Forestry Experiment Station (MAFES), USDA-ARS project 58-6066-3-044, USDA-NIFA
SCRI Project 1029242 and NIFA-USDA Hatch Project 7006130. This work was supported by the National Institute of Allergy and Infectious Diseases of the National Institutes of Health under Award Number U24AI162625. This work was also supported in part through a Laulima Government Solu-
tions, LLC, prime contract with the U.S. National Institute of Allergy and Infectious Diseases (HHSN272201800013C). A.C. performed this work as an
employee of Laulima Government Solutions, LLC. J.H.K. performed this work as an employee of Tunnell Government Services (TGS), a subcontractor
of Laulima Government Solutions, LLC, under Contract No. HHSN272201800013C. The views and conclusions contained in this document are those
of the authors and should not be interpreted as necessarily representing the official policies, either expressed or implied, of the U.S. Department of
Health and Human Services or of the institutions and companies affiliated with the authors, nor does mention of trade names, commercial products or
organizations imply endorsement by the U.S. Government. H.M.O. was supported by the University of Helsinki and the Research Council of Finland by
funding for FINStruct and Instruct Centre FI, part of Biocenter Finland and Instruct-ERIC and Horizon MSCA 101120407.

Acknowledgements

This is a publication of the International Committee on Taxonomy of Viruses (ICTV), a non-profit, volunteer committee of the Virology Division of the International Union of Microbiology Societies (IUMS). The ICTV does not represent or endorse the views and actions of governments or the institutions or organisations for which its co-authors work.

Conflicts of interest

The authors declare no conflict of interest.

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