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 info@ictv.global.

Please select the virus realm containing your taxa of interest:

Realm

Realm: Varidnaviria

Taxon: Laserviricetes  Rank: class  Proposal: 2019.003G.A.v1.Varidnaviria    ICTV Report:   Reference:   

from Serpentine Lake, Rottnest Island, Western Australia, Australia, where archaeal virus SH1, the first isolated virus of this taxon, was discovered; the suffix -viricetes for class taxa

Taxon: Halopanivirales  Rank: order  Proposal: 2019.003G.A.v1.Varidnaviria    ICTV Report:   Reference:   

from Haloarcula hispanica, the host of archaeal virus SH1, the founding member of this clade; the suffix -virales for order taxa

Taxon: Matsushitaviridae  Rank: family  Proposal: 2020.100B.R.Matsushitaviridae    ICTV Report:   Reference:   

to honour the Japanese virologist Isao Matsushita, who isolated Thermus phage IN93, a member of the family; the suffix -viridae for family taxa

Taxon: Simuloviridae  Rank: family  Proposal: 2020.151B.R.Simuloviridae    ICTV Report: Simuloviridae  Reference:   

from the Latin simulo meaning "pretend", referring to the conclusion that genomes of the viruses in this family were first thought to be plasmids; the suffix -viridae for family taxa

Taxon: Sphaerolipoviridae  Rank: family  Proposal: 2013.001a-oB.A.v4.Sphaerolipoviridae    ICTV Report: Sphaerolipoviridae  Reference:   

from the Latin sphaera, meaning “sphere” and the Ancient Greek λίπος (lípos), meaning “fat”, referring to virion morphology and the internal protein-rich membrane vesicle of viruses in the family; the suffix -viridae for family taxa

Realm: Unassigned

Taxon: Naldaviricetes  Rank: class  Proposal: 2020.006D.R.Naldaviricetes    ICTV Report:   Reference:   

from NALDV meaning "nuclear arthropod large DNA viruses; the suffix ‑viricetes for class taxa

Taxon: Lefavirales  Rank: order  Proposal: 2020.006D.R.Naldaviricetes    ICTV Report:   Reference:   

from “late expression factor”, referring to genes identified in a screen for ORFs required for, or supporting, late-phase baculovirus transcription; the suffix -virales for order taxa

Taxon: Baculoviridae  Rank: family  Proposal: Ratification 1975    ICTV Report: Baculoviridae  Reference: PMID: 16648963  

from the Latin baculus, meaning “stick", referring to the morphology of virions of viruses in the family; the suffix ‑viridae for family taxa

Taxon: Hytrosaviridae  Rank: family  Proposal: 2009.001a-kI.A.v4.Hytrosaviridae    ICTV Report: Hytrosaviridae  Reference:   

from the Ancient Greek ὑπέρ (hupér), meaning, “excessive” and τροφή (trophḗ), meaning “nourishment", and sialoadenitis, meaning salivary gland inflammation referring to the salivary gland hypertrophy in  hosts infected by viruses in the family; the suffix ‑viridae for family taxa

Taxon: Nudiviridae  Rank: family  Proposal: 2013.003a-kI.A.v1.Nudiviridae    ICTV Report: Nudiviridae  Reference:   

from the Latin nudus, meaning "naked", part of a previously used name nudibaculovirus, describing viruses with rod-shaped nucleocapsids lacking a protein matrix such as polyhedrin or granulin; the suffix ‑viridae for family taxa

Taxon: Nimaviridae  Rank: family  Proposal: Ratification 2002a    ICTV Report: Nimaviridae  Reference: PMID: 30404800  

from the Hebrew nima, meaning “thread”, referring to the thread- or tail-like polar extension (appendage) on virions of some viruses in the family; the suffix ‑viridae for family taxa

Taxon: Alphasatellitidae  Rank: family  Proposal:  2017.004P.A.v4.Alphasatellitidae    ICTV Report:   Reference:   

from the Ancient Greek ἄλφα (álpha), the first letter of the Greek alphabet and the Latin satellit, meaning "attendent", referring to mobile genetic elements that are dependent upon a helper virus to spread. The suffix -satelittidae is used for satelitte family taxa

Taxon: Ampullaviridae  Rank: family  Proposal: 2005.088B.04.Ampullaviridae    ICTV Report: Ampullaviridae  Reference:   

from the Latin ampulla, meaning "bottle", referring to the unique bottle-shaped morphology of the virion; the suffix ‑viridae for family taxa

Taxon: Anelloviridae  Rank: family  Proposal: 2007.075a-xxV.v4.Anelloviridae    ICTV Report:   Reference:   

from the Latin anello, meaning "ring", referring to the circular nature of the DNA genome of viruses in the family; the suffix ‑viridae for family taxa

Taxon: Avsunviroidae  Rank: family  Proposal: Ratification 1998    ICTV Report: Avsunviroidae  Reference: PMID: 11050945  

from a member of the family, Avocado sunblotch viroid, an infectious agent consisting only of naked RNA; the suffix -viroidae is used for viroid family taxa

Taxon: Bartogtaviriformidae  Rank: family  Proposal: 2022.001G.GTA_viriforms    ICTV Report:   Reference:   

from the host genus name Bartonella and gene transfer agent; the suffix -viriformidae is used for viriform family taxa

Taxon: Bicaudaviridae  Rank: family  Proposal: 2007.090-2B.Bicaudaviridae    ICTV Report: Bicaudaviridae  Reference:   

from the Latin bi meaning "two"  and the Latin cauda meaning " tail", referring to the virion morhologlogy of viruses in the family; the suffix ‑viridae for family taxa

Taxon: Brachygtaviriformidae  Rank: family  Proposal: 2022.001G.GTA_viriforms    ICTV Report:   Reference:   

from the host genus name Brachyspira and gene transfer agent; the suffix -viriformidae is used for viriform family taxa

Taxon: Clavaviridae  Rank: family  Proposal: 2010.002a-gB.A.v2.Clavaviridae    ICTV Report: Clavaviridae  Reference:   

from Latin clava, meaning "club" or "stick", referring to the rigid, bacilliform virion morphology of viruses in the family; the suffix ‑viridae for family taxa

Taxon: Fuselloviridae  Rank: family  Proposal: Ratification 1990    ICTV Report: Fuselloviridae  Reference: PMID: 7903037  

from the Latin fusillo, meaning "little spindle", referring to the virion morphology of viruses in the family; the suffix ‑viridae for family taxa

Taxon: Globuloviridae  Rank: family  Proposal: 2005.081-3B.04.Globuloviridae    ICTV Report: Globuloviridae  Reference:   

from the Latin globulus, meaning “small ball”, referring to the virion morphology of viruses in the family; the suffix ‑viridae for family taxa

Taxon: Guttaviridae  Rank: family  Proposal: 2003.177-178B Guttaviridae    ICTV Report: Guttaviridae  Reference:   

from the Latin gutta, meaning "drop", referring to the droplet-shaped virion morphology of viruses in the family; the suffix ‑viridae for family taxa

Taxon: Halspiviridae  Rank: family  Proposal: 2019.059B.A.v1.Halspiviridae_1fam    ICTV Report: Halspiviridae  Reference:   

from halophilic, referring to the halophilic archaeal hosts of viruses in the family and spindle-shaped, referring to virion morphology of viruses in the family; the suffix ‑viridae for family taxa

Taxon: Itzamnaviridae  Rank: family  Proposal: 2022.001A.Nakonvirales_Maximonvirales_Coyopavirales_3no    ICTV Report:   Reference:   

from Itzamna, Lord of the Heavens as well as night and day in the Mayan mythology; the suffix ‑viridae for family taxa; connection unclear

Taxon: Ovaliviridae  Rank: family  Proposal: 2018.104B.A.v1.Ovaliviridae    ICTV Report: Ovaliviridae  Reference:   

from the Latin ovalis, meaning "egg shaped", referring to the virion capsid architechture of viruses in the family; the suffix ‑viridae for family taxa

Taxon: Plasmaviridae  Rank: family  Proposal: Ratification 1978    ICTV Report: Plasmaviridae  Reference: PMID: 2982026  

from the Ancient Greek πλάσμα (plásma), meaning “something formed”,  referring to the plastic virion shape of viruses in the family; the suffix ‑viridae for family taxa

Taxon: Polydnaviriformidae  Rank: family  Proposal: 2021.006D.R.Polydnaviriformidae_1renfam_3rensp    ICTV Report:   Reference:   

from the Ancient Greek πολύς (polús), meaning “many" and DNA for deoxyribonucleic acid, referring to  the multiple segments of dsDNA genomes of agents in the family;  the suffix -viriformidae is used for viriform family taxa

Taxon: Portogloboviridae  Rank: family  Proposal:  2017.002B.A.v2.Portogloboviridae    ICTV Report: Portogloboviridae  Reference:   

from the Latin portare, meaning ‘to carry’ and globus, meaning ‘a ball’, referring to the round shape of the nucleoprotein virion core of viruses in the family; the suffix ‑viridae for family taxa

Taxon: Pospiviroidae  Rank: family  Proposal: Ratification 1998    ICTV Report: Pospiviroidae  Reference: PMID: 9572562  

from a member of the family, potato spindle tuber viroid, an infectious agent consisting only of naked RNA; the suffix -viroidae for viroid family taxa

Taxon: Rhodogtaviriformidae  Rank: family  Proposal: 2022.001G.GTA_viriforms    ICTV Report:   Reference:   

from the host order name Rhodobacterales and gene transfer agent;  the suffix -viriformidae is used for viriform family taxa

Taxon: Spiraviridae  Rank: family  Proposal:  2013.003a-gB.A.v3.Spiraviridae    ICTV Report: Spiraviridae  Reference:   

from the Latin spira, meaning “coil”, referring to virion morphology of viruses in the family; the suffix ‑viridae for family taxa

Taxon: Thaspiviridae  Rank: family  Proposal: 2019.092B.A.v1.Thaspiviridae_1nfam    ICTV Report: Thaspiviridae  Reference:   

from thaumarchaeal and spindle-shaped virus, referring to the host and virion morphology of viruses in the family; the suffix ‑viridae for family taxa

Taxon: Tolecusatellitidae  Rank: family  Proposal: 2016.021a-kP.A.v2.Tolecusatellitidae    ICTV Report:   Reference:   

from tomato leaf curl virus satellite, the first DNA satellite shown to be associated with geminiviruses and the Latin satellit, meaning "attendent", referring to mobile genetic elements that are dependent upon a helper virus to spread.  The suffix -satellitidae is used for satellite family taxa