Etymology of Taxon Names

The information below provides a list containing descriptions of the origins of ICTV taxon names starting at the rank of realm and going down to the rank of family. This information is derived from the proposals that were submitted when each taxon was created. Links to these proposals, links to ICTV report chapters, and links to publications (through PMIDs) are provided when available.

We thank Stuart Siddell for compiling this list of name origins. Etymological information for taxa below the rank of family, can be found in the relevant ICTV Online (10th) Report chapters. If you have any comments or corrections, please contact us by sending an email to [email protected].

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Enter all or part of a taxon name (family rank or higher)

Singelaviria

Taxon: Salinicovirales Rank: order
Lineage: Singelaviria | Helvetiavirae | Dividoviricota | Laserviricetes | Salinicovirales
Proposal: 2025.003A.Tailless_icosahedral_2nf.zip

Etymology: from saline, referring to the environment in which these viruses were found, and icosahedral, referring to the head morphology of viruses in the family; the suffix ‑virales for order taxa

Taxon: Halicoviridae Rank: family
Lineage: Singelaviria | Helvetiavirae | Dividoviricota | Laserviricetes | Salinicovirales | Halicoviridae
Proposal: 2025.003A.Tailless_icosahedral_2nf.zip

Etymology: from Danakil Halobacteriales icosahedral virus 1, the founding member of this family; the suffix ‑viridae for family taxa

Varidnaviria

Taxon: Varidnaviria Rank: realm
Lineage: Varidnaviria
Proposal: 2019.003G.zip

Etymology: from various DNA viruses; the suffix -viria for realm taxa

Taxon: Abadenavirae Rank: kingdom
Lineage: Varidnaviria | Abadenavirae
Proposal: 2024.010D.Varidnaviria_reorg.zip

Etymology: from the Latin ab, meaning "away, removed, not", and adenain-like capsid; the suffix -virae for kingdom taxa

Taxon: Produgelaviricota Rank: phylum
Lineage: Varidnaviria | Abadenavirae | Produgelaviricota
Proposal: 2024.010D.Varidnaviria_reorg.zip

Etymology: from prokaryote, and the Latin duobus gelata, meaning "double jelly" (a reference to double jelly-roll capsid protein); the suffix -viricota for phylum taxa

Taxon: Ainoaviricetes Rank: class
Lineage: Varidnaviria | Abadenavirae | Produgelaviricota | Ainoaviricetes
Proposal: 2022.002B.Ainoaviricetes_Finnlakeviridae_nc.zip

Etymology: from the Finnish ainoa, meaning "only" or "single", referring to the single-stranded DNA genome of viruses in this taxon; the suffix -viricetes for class taxa

Taxon: Lautamovirales Rank: order
Lineage: Varidnaviria | Abadenavirae | Produgelaviricota | Ainoaviricetes | Lautamovirales
Proposal: 2022.002B.Ainoaviricetes_Finnlakeviridae_nc.zip

Etymology: to honor Jaana K.H. Bamford (nee Lautamo) who established phage research at the University of Jyväskylä, Finland; the suffix -virales for order taxa

Taxon: Finnlakeviridae Rank: family
Lineage: Varidnaviria | Abadenavirae | Produgelaviricota | Ainoaviricetes | Lautamovirales | Finnlakeviridae
Proposal: 2019.057B.zip
Report Chapter: Finnlakeviridae

Etymology: from Finnish and lake, referring to the location where Flavobacterium phage FLiP, a member of the family, was isolated; the suffix -viridae for family taxa

Taxon: Belvinaviricetes Rank: class
Lineage: Varidnaviria | Abadenavirae | Produgelaviricota | Belvinaviricetes
Proposal: 2024.010D.Varidnaviria_reorg.zip

Etymology: from Belfryvirales and Vinavirales; the suffix -viricetes for class taxa

Taxon: Atroposvirales Rank: order
Lineage: Varidnaviria | Abadenavirae | Produgelaviricota | Belvinaviricetes | Atroposvirales
Proposal: 2022.002A.Verdandiviridae_nf_Atrospovirales_no.zip

Etymology: from Atropos, one of the three Fates in Greek mythology, equivalent to Norns in Norse mythology; the suffix -virales for order taxa; connection unclear

Taxon: Skuldviridae Rank: family
Lineage: Varidnaviria | Abadenavirae | Produgelaviricota | Belvinaviricetes | Atroposvirales | Skuldviridae
Proposal: 2022.002A.Verdandiviridae_nf_Atrospovirales_no.zip

Etymology: from Skuld, one of the three Norns, the most powerful beings in Norse mythology that govern the lives of gods and mortals; the suffix -viridae for family taxa; connection unclear

Taxon: Belfryvirales Rank: order
Lineage: Varidnaviria | Abadenavirae | Produgelaviricota | Belvinaviricetes | Belfryvirales
Proposal: 2019.003G.zip

Etymology: from belfry, a tower (turret), referencing the turret-like appendages that decorate the capsid shell of viruses in this taxon; the suffix -virales for order taxa

Taxon: Turriviridae Rank: family
Lineage: Varidnaviria | Abadenavirae | Produgelaviricota | Belvinaviricetes | Belfryvirales | Turriviridae
Proposal: 2013.002a-gB.A.v3.Turriviridae.pdf
Report Chapter: Turriviridae

Etymology: from the Latin turris, meanimg "turret", referring to the turreted structure of the icosahedral virion of viruses in the family; the suffix -viridae for family taxa

Taxon: Coyopavirales Rank: order
Lineage: Varidnaviria | Abadenavirae | Produgelaviricota | Belvinaviricetes | Coyopavirales
Proposal: 2022.001A.Nakonvirales_Maximonvirales_Coyopavirales_3no.zip

Etymology: from Coyopa, the god of thunder in Mayan mythology; the suffix -virales for order taxa; connection unclear

Taxon: Chaacviridae Rank: family
Lineage: Varidnaviria | Abadenavirae | Produgelaviricota | Belvinaviricetes | Coyopavirales | Chaacviridae
Proposal: 2022.001A.Nakonvirales_Maximonvirales_Coyopavirales_3no.zip
Report Chapter: Chaacviridae

Etymology: from Chaac, the god of rain in Mayan mythology; the suffix -viridae for family taxa; connection unclear

Taxon: Vinavirales Rank: order
Lineage: Varidnaviria | Abadenavirae | Produgelaviricota | Belvinaviricetes | Vinavirales
Proposal: 2019.003G.zip

Etymology: from Viña del Mar, Chile, where phage PM2, a member of the taxon, was first isolated; the suffix -virales for order taxa

Taxon: Asemoviridae Rank: family
Lineage: Varidnaviria | Abadenavirae | Produgelaviricota | Belvinaviricetes | Vinavirales | Asemoviridae
Proposal: 2024.038B.Vinavirales_3nf_1mf_7ng_5ns_3ms.zip

Etymology: from the Greek asemos, meaning unknown, fameless or obscure, referring to the fact that phage NO16 was found to be globally distributed as a vibrio prophage but had not been detected using standard prophage-finding tools; the suffix -viridae for family taxa

Taxon: Autolykiviridae Rank: family
Lineage: Varidnaviria | Abadenavirae | Produgelaviricota | Belvinaviricetes | Vinavirales | Autolykiviridae
Proposal: 2020.016B.R.Autolykiviridae.zip

Etymology: from Autolykos, a Greek mythological character, who was described as being difficult to catch; the suffix -viridae for family taxa; connection unclear

Taxon: Corticoviridae Rank: family
Lineage: Varidnaviria | Abadenavirae | Produgelaviricota | Belvinaviricetes | Vinavirales | Corticoviridae
Proposal: Ratification_1978.pdf
Report Chapter: Corticoviridae
PubMed ID: 12134022

Etymology: derived from the Latin cortex, meaning “crust” or “bark”, referring to the protective layer of the capsid protein in virions of viruses in the family ; the suffix -viridae for family taxa

Taxon: Mestraviridae Rank: family
Lineage: Varidnaviria | Abadenavirae | Produgelaviricota | Belvinaviricetes | Vinavirales | Mestraviridae
Proposal: 2024.038B.Vinavirales_3nf_1mf_7ng_5ns_3ms.zip

Etymology: from Mestra, the wife of Autolykus; the suffix -viridae for family taxa

Taxon: Parnassusviridae Rank: family
Lineage: Varidnaviria | Abadenavirae | Produgelaviricota | Belvinaviricetes | Vinavirales | Parnassusviridae
Proposal: 2024.038B.Vinavirales_3nf_1mf_7ng_5ns_3ms.zip

Etymology: from Mount Parnassus where Autolykus lived in Greek mythology; the suffix -viridae for family taxa

Taxon: Bamfordvirae Rank: kingdom
Lineage: Varidnaviria | Bamfordvirae
Proposal: 2019.003G.zip

Etymology: to honour Dennis Bamford who first promoted the evolutionary unity of all DJR-MCP (double jelly-roll major capsid protein) viruses; the suffix -virae for kingdom taxa

Taxon: Nucleocytoviricota Rank: phylum
Lineage: Varidnaviria | Bamfordvirae | Nucleocytoviricota
Proposal: 2019.003G.zip

Etymology: from nucleocytoplasmic large DNA viruses (NCLDVs), an unofficial name for this group of viruses; the suffix -viricota for phylum taxa

Taxon: Megaviricetes Rank: class
Lineage: Varidnaviria | Bamfordvirae | Nucleocytoviricota | Megaviricetes
Proposal: 2019.003G.zip

Etymology: from the Greek μέγας (mégas), meaning "large", referring to the extremely large genome size of viruses in this taxon; the suffix -viricetes for class taxa

Taxon: Algavirales Rank: order
Lineage: Varidnaviria | Bamfordvirae | Nucleocytoviricota | Megaviricetes | Algavirales
Proposal: 2019.003G.zip

Etymology: from alga, referring to the hosts of many viruses in this taxon: the suffix -virales for order taxa

Taxon: Phycodnaviridae Rank: family
Lineage: Varidnaviria | Bamfordvirae | Nucleocytoviricota | Megaviricetes | Algavirales | Phycodnaviridae
Proposal: Ratification_1990.pdf
PubMed ID: 12181671

Etymology: from the Ancient Greek φῦκος (phûkos), meaning “seaweed” and DNA for deoxyribonucleic acid, referring to the host (marine or freshwater eukaryotic algae) and the dsDNA genome of viruses in the family; the suffix -viridae for family taxa

Taxon: Imitervirales Rank: order
Lineage: Varidnaviria | Bamfordvirae | Nucleocytoviricota | Megaviricetes | Imitervirales
Proposal: 2019.003G.zip

Etymology: from the French imiter, meaning "to mimic", referring to mimiviruses (microbe-imitating); the suffix -virales for order taxa

Taxon: Orthomivirineae Rank: suborder
Lineage: Varidnaviria | Bamfordvirae | Nucleocytoviricota | Megaviricetes | Imitervirales | Orthomivirineae
Proposal: 2025.011F.Imitervirales_newtaxa.zip

Etymology: from the Ancient Greek ὀρθός (ortho), meaning "straight" or "correct" and Imitervirales, the parent taxon; the suffix ‑virineae for suborder taxa

Taxon: Mimiviridae Rank: family
Lineage: Varidnaviria | Bamfordvirae | Nucleocytoviricota | Megaviricetes | Imitervirales | Orthomivirineae | Mimiviridae
Proposal: 2005.004F.04.Mimiviridae.pdf

Etymology: from microbe mimicking because the large particle size of viruses in the family; the suffix -viridae for family taxa

Taxon: Paramivirineae Rank: suborder
Lineage: Varidnaviria | Bamfordvirae | Nucleocytoviricota | Megaviricetes | Imitervirales | Paramivirineae
Proposal: 2025.011F.Imitervirales_newtaxa.zip

Etymology: from the Ancient Greek πᾰρᾰ (para), meaning "related" or "similar" and Imitervirales, the parent taxon; the suffix ‑virineae for suborder taxa

Taxon: Allomimiviridae Rank: family
Lineage: Varidnaviria | Bamfordvirae | Nucleocytoviricota | Megaviricetes | Imitervirales | Paramivirineae | Allomimiviridae
Proposal: 2022.004F.Imitervirales_reorg.zip

Etymology: from the Ancient Greek ἄλλος (állos), meaning "other" or "another" and Mimiviridae, referring to the evolutionary relationship between the two families; the suffix -viridae for family taxa

Taxon: Mesomimiviridae Rank: family
Lineage: Varidnaviria | Bamfordvirae | Nucleocytoviricota | Megaviricetes | Imitervirales | Paramivirineae | Mesomimiviridae
Proposal: 2022.004F.Imitervirales_reorg.zip

Etymology: from the Ancient Greek μέσος (mésos), meaning "middle" and Mimiviridae, referring to the evolutionary relationship of viruses in the two families; the suffix -viridae for family taxa

Taxon: Schizomimiviridae Rank: family
Lineage: Varidnaviria | Bamfordvirae | Nucleocytoviricota | Megaviricetes | Imitervirales | Paramivirineae | Schizomimiviridae
Proposal: 2022.004F.Imitervirales_reorg.zip

Etymology: from the Ancient Greek σχίζω (skhízō) meaning "split" and Mimiviridae, referring to the evolutionary relationship of viruses in the two families; the suffix -viridae for family taxa

Taxon: Pimascovirales Rank: order
Lineage: Varidnaviria | Bamfordvirae | Nucleocytoviricota | Megaviricetes | Pimascovirales
Proposal: 2019.003G.zip

Etymology: from pithoviruses, iridoviruses, marseilleviruses and ascoviruses, members of the taxon; the suffix -virales for order taxa

Taxon: Ocovirineae Rank: suborder
Lineage: Varidnaviria | Bamfordvirae | Nucleocytoviricota | Megaviricetes | Pimascovirales | Ocovirineae
Proposal: 2024.005F.Pimascovirales_reorg.zip

Etymology: from the Latin ovoideum cum ore meaning "ovoid with a mouth", referring to the virion morphology; the suffix -virinae for suborder taxa

Taxon: Hydriviridae Rank: family
Lineage: Varidnaviria | Bamfordvirae | Nucleocytoviricota | Megaviricetes | Pimascovirales | Ocovirineae | Hydriviridae
Proposal: 2024.005F.Pimascovirales_reorg.zip

Etymology: from hydrivirus; the suffix -viridae for family taxa

Taxon: Orpheoviridae Rank: family
Lineage: Varidnaviria | Bamfordvirae | Nucleocytoviricota | Megaviricetes | Pimascovirales | Ocovirineae | Orpheoviridae
Proposal: 2023.011F.Pimascovirales_3newfam.zip

Etymology: from Orpheus, a Thracian musician, poet and prophet in Greek mythology, and the addition of the vowel o; the suffix ‑viridae for family taxa. Connection uncertain

Taxon: Pithoviridae Rank: family
Lineage: Varidnaviria | Bamfordvirae | Nucleocytoviricota | Megaviricetes | Pimascovirales | Ocovirineae | Pithoviridae
Proposal: 2023.011F.Pimascovirales_3newfam.zip

Etymology: from Ancient Greek πίθος (píthos) a large container, referring to the morphology of virions of viruses in the family; the suffix ‑viridae for family taxa

Taxon: Orthocedratvirinae Rank: subfamily
Lineage: Varidnaviria | Bamfordvirae | Nucleocytoviricota | Megaviricetes | Pimascovirales | Ocovirineae | Pithoviridae | Orthocedratvirinae
Proposal: 2023.011F.Pimascovirales_3newfam.zip

Etymology: from the French cédrat, a type of lemon, referring to the morhology of virions of viruses in the family; the suffix ‑viridae for family taxa

Taxon: Ascoviridae Rank: family
Lineage: Varidnaviria | Bamfordvirae | Nucleocytoviricota | Megaviricetes | Pimascovirales | Ascoviridae
Proposal: Ratification_1998.pdf
Report Chapter: Ascoviridae
PubMed ID: 19216438

Etymology: phonetically from the Ancient Greek ἀσκός (askós), meaning "tube" or “sac”, referring to the virion-containing vesicles produced by cleavage of host cells, which are characteristic for viruses of this family; the suffix -viridae for family taxa

Taxon: Iridoviridae Rank: family
Lineage: Varidnaviria | Bamfordvirae | Nucleocytoviricota | Megaviricetes | Pimascovirales | Iridoviridae
Proposal: Ratification_1975.pdf
Report Chapter: Iridoviridae
PubMed ID: 28648249

Etymology: from Iris (iridos), the daughter of mythological Greek gods, whose sign was the rainbow, referring to the iridescent appearance of invertebrates infected with viruses of the family as well as centrifuged pellets of virions; the suffix -viridae for family taxa

Taxon: Marseilleviridae Rank: family
Lineage: Varidnaviria | Bamfordvirae | Nucleocytoviricota | Megaviricetes | Pimascovirales | Marseilleviridae
Proposal: 2012.002a-hF.A.v5.Marseilleviridae.pdf

Etymology: from Marseille, the French city where Marseillevirus marseillevirus, a member of the family, was discovered; the suffix -viridae for family taxa

Taxon: Mamonoviridae Rank: family
Lineage: Varidnaviria | Bamfordvirae | Nucleocytoviricota | Megaviricetes | Mamonoviridae
Proposal: 2022.005F.Mamonoviridae_newfam.zip

Etymology: from the Japanese mamono (魔物), meaning “monster”, referring to the term "giant" used to describe the genome and virions of viruses in the family; the suffix -viridae for family taxa

Taxon: Mriyaviricetes Rank: class
Lineage: Varidnaviria | Bamfordvirae | Nucleocytoviricota | Mriyaviricetes
Proposal: 2024.010D.Varidnaviria_reorg.zip

Etymology: from Ukrainian мрія [outdated transliteration: mriya], meaning dream; the suffix -viricetes for class taxa; connection unclear

Taxon: Yaraviridae Rank: family
Lineage: Varidnaviria | Bamfordvirae | Nucleocytoviricota | Mriyaviricetes | Yaraviridae
Proposal: 2021.008F.R.Yaraviridae_newfam.zip

Etymology: from Yara, the mother of waters, a mythological character of the Tupi indigenous people of Brazil; the suffix -viridae for family taxa; connection unclear

Taxon: Pokkesviricetes Rank: class
Lineage: Varidnaviria | Bamfordvirae | Nucleocytoviricota | Pokkesviricetes
Proposal: 2019.003G.zip

Etymology: from the Middle English pokkes, meaning "pox", referring to the disease manifestation associated with some viruses in the taxon; the suffix -viricetes for class taxa

Taxon: Asfuvirales Rank: order
Lineage: Varidnaviria | Bamfordvirae | Nucleocytoviricota | Pokkesviricetes | Asfuvirales
Proposal: 2019.003G.zip

Etymology: from Asfarviridae and "faustovirus" (a likely member of the order together with "pacmanviruses" and "kaumoebaviruses"); the suffix -virales for order taxa

Taxon: Asfarviridae Rank: family
Lineage: Varidnaviria | Bamfordvirae | Nucleocytoviricota | Pokkesviricetes | Asfuvirales | Asfarviridae
Proposal: Ratification_1998.pdf
Report Chapter: Asfarviridae
PubMed ID: 6695498

Etymology: from African swine fever and related viruses; the suffix -viridae for family taxa

Taxon: Chitovirales Rank: order
Lineage: Varidnaviria | Bamfordvirae | Nucleocytoviricota | Pokkesviricetes | Chitovirales
Proposal: 2019.003G.zip

Etymology: from the name of a higher-rank taxon for poxviruses proposed by Lwoff and Tournier in 1966 (“Chitovirales”; from the Greek χιτών, (khitōn), a tunic garment, referring to the morphological structure of poxviruses); the suffix -virales for order taxa

Taxon: Poxviridae Rank: family
Lineage: Varidnaviria | Bamfordvirae | Nucleocytoviricota | Pokkesviricetes | Chitovirales | Poxviridae
Proposal: ICTV 1st Report.pdf
Report Chapter: Poxviridae
PubMed ID: 372132

Etymology: from the Old English poc, meaning “pustule”, referring to the disease pox associated with some viruses of the family; the suffix -viridae for family taxa

Taxon: Preplasmiviricota Rank: phylum
Lineage: Varidnaviria | Bamfordvirae | Preplasmiviricota
Proposal: 2019.003G.zip

Etymology: from "precursor of certain plasmids", referring to the evolutionary relationship between viviricetessome viruses in the taxa and some plasmids; the suffix -viricota for phylum taxa

Taxon: Polisuviricotina Rank: subphylum
Lineage: Varidnaviria | Bamfordvirae | Preplasmiviricota | Polisuviricotina
Proposal: 2024.010D.Varidnaviria_reorg.zip

Etymology: from polinton-like supergroup; the suffix -viricotina for subphylum taxa

Taxon: Aquintoviricetes Rank: class
Lineage: Varidnaviria | Bamfordvirae | Preplasmiviricota | Polisuviricotina | Aquintoviricetes
Proposal: 2024.010D.Varidnaviria_reorg.zip

Etymology: from the Latin aqua, meaning water, and polinton (a reference to polintons first being associated with aquatic environments); the suffix -viricetes for class taxa

Taxon: Archintovirales Rank: order
Lineage: Varidnaviria | Bamfordvirae | Preplasmiviricota | Polisuviricotina | Aquintoviricetes | Archintovirales
Proposal: 2024.010D.Varidnaviria_reorg.zip

Etymology: from the Greek ἀρχός (archo), meaning "ruler, widespread", and polinton; the suffix -virales for order taxa

Taxon: Phypoliviridae Rank: family
Lineage: Varidnaviria | Bamfordvirae | Preplasmiviricota | Polisuviricotina | Aquintoviricetes | Archintovirales | Phypoliviridae
Proposal: 2024.010D.Varidnaviria_reorg.zip

Etymology: from phytoplankton and polinton; the suffix -viridae for family taxa

Taxon: Pharingeaviricetes Rank: class
Lineage: Varidnaviria | Bamfordvirae | Preplasmiviricota | Polisuviricotina | Pharingeaviricetes
Proposal: 2024.010D.Varidnaviria_reorg.zip

Etymology: from the Latin pharingea, meaning throat (a reference to adenovirids infecting adenoids); the suffix -viricetes for class taxa

Taxon: Rowavirales Rank: order
Lineage: Varidnaviria | Bamfordvirae | Preplasmiviricota | Polisuviricotina | Pharingeaviricetes | Rowavirales
Proposal: 2019.003G.zip

Etymology: to honour Wallace P. Rowe, one of the co-discoverers of adenoviruses in 1953, with the addition of the vowel a; the suffix -virales for order taxa

Taxon: Adenoviridae Rank: family
Lineage: Varidnaviria | Bamfordvirae | Preplasmiviricota | Polisuviricotina | Pharingeaviricetes | Rowavirales | Adenoviridae
Proposal: Ratification_1975.pdf
Report Chapter: Adenoviridae
PubMed ID: 13223958

Etymology: from adenoid, the tissue where adenoviruses, originally named adenoid degeneration viruses, were discoverd in 1953; the suffix -viridae for family taxa

Taxon: Polintoviricetes Rank: class
Lineage: Varidnaviria | Bamfordvirae | Preplasmiviricota | Polisuviricotina | Polintoviricetes
Proposal: 2020.003D.R.Adintoviridae.zip

Etymology: from the initial naming of adintoviruses as polinton “transposons", referring to the type B DNA polymerase (PolB) and retrovirus-like integrase genes encoded by members of the taxon; the suffix -viricetes for class taxa

Taxon: Amphintovirales Rank: order
Lineage: Varidnaviria | Bamfordvirae | Preplasmiviricota | Polisuviricotina | Polintoviricetes | Amphintovirales
Proposal: 2024.010D.Varidnaviria_reorg.zip

Etymology: from the Latin amphi, meaning both, and polinton (a reference to the two lifestyles of polintoviricetes as transposons or viruses); the suffix -virales for order taxa

Taxon: Eupolintoviridae Rank: family
Lineage: Varidnaviria | Bamfordvirae | Preplasmiviricota | Polisuviricotina | Polintoviricetes | Amphintovirales | Eupolintoviridae
Proposal: 2024.010D.Varidnaviria_reorg.zip
Report Chapter: Eupolintoviridae

Etymology: from the Greek εὖ (eu) meaning true, and polinton (a reference to these viruses being the first polintoviricetes to be classified); the suffix ‑viridae for family taxa

Taxon: Virophaviricetes Rank: class
Lineage: Varidnaviria | Bamfordvirae | Preplasmiviricota | Polisuviricotina | Virophaviricetes
Proposal: 2024.010D.Varidnaviria_reorg.zip

Etymology: from virophage; the suffix -viricetes for class taxa

Taxon: Divpevirales Rank: order
Lineage: Varidnaviria | Bamfordvirae | Preplasmiviricota | Polisuviricotina | Virophaviricetes | Divpevirales
Proposal: 2023.009F.Virophages_reorg.zip

Etymology: from divergent penton proteins, referring to the exceptional genome organisation of members of the taxon; the suffix ‑virales for order taxa

Taxon: Ruviroviridae Rank: family
Lineage: Varidnaviria | Bamfordvirae | Preplasmiviricota | Polisuviricotina | Virophaviricetes | Divpevirales | Ruviroviridae
Proposal: 2023.009F.Virophages_reorg.zip

Etymology: from rumen virophages, referring to the source of members in the family; the suffix ‑viridae for family taxa

Taxon: Lavidavirales Rank: order
Lineage: Varidnaviria | Bamfordvirae | Preplasmiviricota | Polisuviricotina | Virophaviricetes | Lavidavirales
Proposal: 2023.009F.Virophages_reorg.zip

Etymology: from large virus dependent or associated, referring to the dependence on, or association with, a large dsDNA virus of the family Mimiviridae; the suffix -virales for order taxa

Taxon: Maviroviridae Rank: family
Lineage: Varidnaviria | Bamfordvirae | Preplasmiviricota | Polisuviricotina | Virophaviricetes | Lavidavirales | Maviroviridae
Proposal: 2023.009F.Virophages_reorg.zip

Etymology: from Maverick-related virus and the suffix -viro, referring to the first isolated member of the taxon; the suffix ‑viridae for family taxa

Taxon: Mividavirales Rank: order
Lineage: Varidnaviria | Bamfordvirae | Preplasmiviricota | Polisuviricotina | Virophaviricetes | Mividavirales
Proposal: 2023.009F.Virophages_reorg.zip

Etymology: from Mimivirus dependent or associated, referring to the replication of taxon members in association with a mimivirus; the suffix ‑virales for order taxa

Taxon: Sputniviroviridae Rank: family
Lineage: Varidnaviria | Bamfordvirae | Preplasmiviricota | Polisuviricotina | Virophaviricetes | Mividavirales | Sputniviroviridae
Proposal: 2023.009F.Virophages_reorg.zip

Etymology: from Sputnik virus 1, and the addition of the vowel o, referring to the first isolated member of the family; the suffix ‑viridae for family taxa

Taxon: Priklausovirales Rank: order
Lineage: Varidnaviria | Bamfordvirae | Preplasmiviricota | Polisuviricotina | Virophaviricetes | Priklausovirales
Proposal: 2019.003G.zip

Etymology: from the Lithuanian priklausomas, meaning "dependent", a reference to the family Lavidaviridae (large virus dependent associated) a member of the taxon; the suffix -virales for order taxa

Taxon: Burtonviroviridae Rank: family
Lineage: Varidnaviria | Bamfordvirae | Preplasmiviricota | Polisuviricotina | Virophaviricetes | Priklausovirales | Burtonviroviridae
Proposal: 2023.009F.Virophages_reorg.zip

Etymology: from Mary Burton Gulliver, the wife of Lemuel Gulliver in Gulliver’s Travels (a novel by Jonathon Swift) and the addition of the suffix -viro, referring to members of the family as most closely related to the large virophages; the suffix ‑viridae for family taxa

Taxon: Dishuiviroviridae Rank: family
Lineage: Varidnaviria | Bamfordvirae | Preplasmiviricota | Polisuviricotina | Virophaviricetes | Priklausovirales | Dishuiviroviridae
Proposal: 2023.009F.Virophages_reorg.zip

Etymology: from Dishui Lake in China, where the first member of the family, Chlorella virophage isolate SW01, was obtained and the addition of the suffix -viro, referring to members of the family as related to the large virophages; the suffix ‑viridae for family taxa

Taxon: Gulliviroviridae Rank: family
Lineage: Varidnaviria | Bamfordvirae | Preplasmiviricota | Polisuviricotina | Virophaviricetes | Priklausovirales | Gulliviroviridae
Proposal: 2023.009F.Virophages_reorg.zip

Etymology: from Lemuel Gulliver, the main character of Gulliver’s Travels (a novel by Jonathon Swift) and the addition of the suffix -viro, referring to members of the family as “giant" virophages but still relatively small compared to their associated giant viruses; the suffix ‑viridae for family taxa

Taxon: Omnilimnoviroviridae Rank: family
Lineage: Varidnaviria | Bamfordvirae | Preplasmiviricota | Polisuviricotina | Virophaviricetes | Priklausovirales | Omnilimnoviroviridae
Proposal: 2023.009F.Virophages_reorg.zip

Etymology: from the Latin omni meaning “all or everywhere”, the Ancient Greek λίμνη (límnē) meaning "lake" and the addition of the suffix -viro, referring to freshwater environments, since members of this virophage family were detected across a broad geographic range of freshwater lakes; the suffix ‑viridae for family taxa

Taxon: Prepoliviricotina Rank: subphylum
Lineage: Varidnaviria | Bamfordvirae | Preplasmiviricota | Prepoliviricotina
Proposal: 2024.010D.Varidnaviria_reorg.zip

Etymology: from predecessor of polintoviricetes; the suffix -viricotina for subphylum taxa

Taxon: Tectiliviricetes Rank: class
Lineage: Varidnaviria | Bamfordvirae | Preplasmiviricota | Prepoliviricotina | Tectiliviricetes
Proposal: 2019.003G.zip

Etymology: from tectivirid-like, referring to viruses of the family Tectiviridae; the suffix -viricetes for class taxa

Taxon: Kalamavirales Rank: order
Lineage: Varidnaviria | Bamfordvirae | Preplasmiviricota | Prepoliviricotina | Tectiliviricetes | Kalamavirales
Proposal: 2019.003G.zip

Etymology: from Kalamazoo, USA, where Pseudomonas phage PRD1 a member of the taxon was first isolated ; the suffix -virales for order taxa

Taxon: Tectiviridae Rank: family
Lineage: Varidnaviria | Bamfordvirae | Preplasmiviricota | Prepoliviricotina | Tectiliviricetes | Kalamavirales | Tectiviridae
Proposal: Ratification_1978.pdf
PubMed ID: 7793328

Etymology: from the Latin tectus, meaning "covered", referring to a lipid envelope covering the DNA compartment and separating the genomic DNA from a protein capsid in viruses of the family; the suffix -viridae for family taxa

Volvereviria

Taxon: Volvereviria Rank: realm
Lineage: Volvereviria
Proposal: 2025.002G.Monodnaviria_reorg_4nr.zip

Etymology: from the Latin volvere, meaning “to roll”, referring to the rolling circle replication uniformly used by viruses in this realm; the suffix ‑viria for realm taxa.

Taxon: Sangervirae Rank: kingdom
Lineage: Volvereviria | Sangervirae
Proposal: 2019.005G.zip

Etymology: to honour Frederick Sanger, who used “phage phiX174” to deduce the first-ever DNA genome sequence; the suffix -virae for kingdom taxa

Taxon: Phixviricota Rank: phylum
Lineage: Volvereviria | Sangervirae | Phixviricota
Proposal: 2019.005G.zip

Etymology: from Escherichia phage phiX174, a member of the taxon that has been central to the history of virology and molecular biology; the suffix -viricota for phylum taxa

Taxon: Microviricetes Rank: class
Lineage: Volvereviria | Sangervirae | Phixviricota | Microviricetes
Proposal: 2025.043B.Microviricetes_reorg.zip

Etymology: from the Ancient Greek μικρός (mikros), meaning "small", referring to the size of the genomes of viruses in the class; the suffix -viricetes for class taxa

Taxon: Alpavirales Rank: order
Lineage: Volvereviria | Sangervirae | Phixviricota | Microviricetes | Alpavirales
Proposal: 2025.043B.Microviricetes_reorg.zip

Etymology: from the Sanskrit अल्प (alpa), meaning "small, referring to the size of virus genomes in the order; the suffix -virales for order taxa

Taxon: Lilleviridae Rank: family
Lineage: Volvereviria | Sangervirae | Phixviricota | Microviricetes | Alpavirales | Lilleviridae
Proposal: 2025.043B.Microviricetes_reorg.zip

Etymology: from the Danish lille, meaning "small", referring to the size of virus genomes in the family; the suffix -viridae for family taxa

Taxon: Litenviridae Rank: family
Lineage: Volvereviria | Sangervirae | Phixviricota | Microviricetes | Alpavirales | Litenviridae
Proposal: 2025.043B.Microviricetes_reorg.zip

Etymology: from the Norwegian liten, meaning "small", referring to the size of virus genomes in the family; the suffix -viridae for family taxa

Taxon: Litilviridae Rank: family
Lineage: Volvereviria | Sangervirae | Phixviricota | Microviricetes | Alpavirales | Litilviridae
Proposal: 2025.043B.Microviricetes_reorg.zip

Etymology: from the Islandic lítil (litill), meaning "small", referring to the size of virus genomes in the family; the suffix -viridae for family taxa

Taxon: Pieniviridae Rank: family
Lineage: Volvereviria | Sangervirae | Phixviricota | Microviricetes | Alpavirales | Pieniviridae
Proposal: 2025.043B.Microviricetes_reorg.zip

Etymology: from the Finnish pieni, meanimg "small", referring to the size of virus genomes in the family; the suffix -viridae for family taxa

Taxon: Pikkuviridae Rank: family
Lineage: Volvereviria | Sangervirae | Phixviricota | Microviricetes | Alpavirales | Pikkuviridae
Proposal: 2025.043B.Microviricetes_reorg.zip

Etymology: from the Finnish pikku,meaning "small", referring to the size of virus genomes of in the family; the suffix -viridae for family taxa

Taxon: Amoyvirales Rank: order
Lineage: Volvereviria | Sangervirae | Phixviricota | Microviricetes | Amoyvirales
Proposal: 2025.043B.Microviricetes_reorg.zip

Etymology: from Amoy, the romanized name of Xiamen University, where the founding member of this taxon was isolated; the suffix -virales for order taxa

Taxon: Liberviridae Rank: family
Lineage: Volvereviria | Sangervirae | Phixviricota | Microviricetes | Amoyvirales | Liberviridae
Proposal: 2025.043B.Microviricetes_reorg.zip

Etymology: from Liberbacter sp., the hosts of representative viruses in the family; the suffix -viridae for family taxa

Taxon: Mazaviridae Rank: family
Lineage: Volvereviria | Sangervirae | Phixviricota | Microviricetes | Amoyvirales | Mazaviridae
Proposal: 2025.043B.Microviricetes_reorg.zip

Etymology: from the Lithuanian mažas (mazas), meaning "small", referring to the size of virus genomes in the family; the suffix -viridae for family taxa

Taxon: Bullavirales Rank: order
Lineage: Volvereviria | Sangervirae | Phixviricota | Microviricetes | Bullavirales
Proposal: 2025.043B.Microviricetes_reorg.zip

Etymology: from the Latin bulla, meaning "knob" or "stud", referring to the major spike protein on the surface of member viruses; the suffix ‑virales for order taxa

Taxon: Eubullaviridae Rank: family
Lineage: Volvereviria | Sangervirae | Phixviricota | Microviricetes | Bullavirales | Eubullaviridae
Proposal: 2025.043B.Microviricetes_reorg.zip

Etymology: from the Ancient Greek Greek εὖ (eu), meaning "true " and Bullaviridae, a defunct family; the suffix -viridae for family taxa

Taxon: Pequenoviridae Rank: family
Lineage: Volvereviria | Sangervirae | Phixviricota | Microviricetes | Bullavirales | Pequenoviridae
Proposal: 2025.043B.Microviricetes_reorg.zip

Etymology: from the Spanish pequeño (pequeno), meaning "small", referring to the size of virus genomes in the family; the suffix -viridae for family taxa

Taxon: Piccoloviridae Rank: family
Lineage: Volvereviria | Sangervirae | Phixviricota | Microviricetes | Bullavirales | Piccoloviridae
Proposal: 2025.043B.Microviricetes_reorg.zip

Etymology: from the Italian piccolo, meaning "small", referring to the size of virus genomes in the family; the suffix -viridae for family taxa

Taxon: Piticuviridae Rank: family
Lineage: Volvereviria | Sangervirae | Phixviricota | Microviricetes | Bullavirales | Piticuviridae
Proposal: 2025.043B.Microviricetes_reorg.zip

Etymology: from the Sardinian piticcu, meaning "small", referring to the size of virus genomes in the family; the suffix -viridae for family taxa

Taxon: Gokushovirales Rank: order
Lineage: Volvereviria | Sangervirae | Phixviricota | Microviricetes | Gokushovirales
Proposal: 2025.043B.Microviricetes_reorg.zip

Etymology: from the Japanese gokusho, meaning "very small", referring to the genome size of member viruses, which are smaller than other microviruses; the suffix ‑virales for order taxa

Taxon: Alphagokushoviridae Rank: family
Lineage: Volvereviria | Sangervirae | Phixviricota | Microviricetes | Gokushovirales | Alphagokushoviridae
Proposal: 2025.043B.Microviricetes_reorg.zip

Etymology: from the first letter of the Greek alphabet alpha and the Japanese gokusho, meaning "very small", referring to the genome size of member viruses; the suffix ‑viridae for family taxa

Taxon: Betagokushoviridae Rank: family
Lineage: Volvereviria | Sangervirae | Phixviricota | Microviricetes | Gokushovirales | Betagokushoviridae
Proposal: 2025.043B.Microviricetes_reorg.zip

Etymology: from the second letter of the Greek alphabet beta and the Japanese gokusho, meaning "very small", referring to the genome size of member viruses; the suffix ‑viridae for family taxa

Taxon: Groupodiviridae Rank: family
Lineage: Volvereviria | Sangervirae | Phixviricota | Microviricetes | Gokushovirales | Groupodiviridae
Proposal: 2025.043B.Microviricetes_reorg.zip

Etymology: from Group D and the vowel i, a previous name for this clade of viruses; the suffix -viridae for family taxa

Taxon: Pichoviridae Rank: family
Lineage: Volvereviria | Sangervirae | Phixviricota | Microviricetes | Gokushovirales | Pichoviridae
Proposal: 2025.043B.Microviricetes_reorg.zip

Etymology: from the Occitan pichon, meaning "small", referring to the size of virus genomes in the family; the suffix -viridae for family taxa