Name: Selenomonas ruminantium (Certes 1889) Wenyon 1926 (Approved Lists 1980)

Category: Species

Proposed as: comb. nov.

Basonym: "Ancyromonas ruminantium" Certes 1889

Etymology: ru.mi.nan’ti.um. N.L. gen. pl. n. ruminantium, of ruminants [probably better: ruminantiorum]; from L. pres. part. ruminans, ruminating

Pronunciation (Latin), gender: se-le-NO-mo-nas ru-mi-NAN-ti-um, feminine

Type strain: ATCC 12561; DSM 2150; GA192

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: M62702 Analyse FASTA

Effective publication: Wenyon CM. Protozoology, Vol.1. Bailliere, Tindall & Cox, London, 1926.

IJSEM list: Skerman VBD, McGowan V, Sneath PHA. Approved lists of bacterial names. Int J Syst Bacteriol 1980; 30:225-420.

Nomenclatural status: validly published under the ICNP

Taxonomic status: synonym (and not recommended for medical use)

Correct name: Pseudoselenomonas ruminantium (Certes 1889) Heng and Kittelmann 2026

Risk group: 1

• Synonyms:

  • Name	Kind
    Pseudoselenomonas ruminantium (Certes 1889) Heng and Kittelmann 2026	homotypic synonym, validly published under the ICNP
    "Ancyromonas ruminantium" Certes 1889	homotypic synonym, not validly published, basonym of name in Approved Lists, lectotype

• Notes:
  • ❗ Selenomonas ruminantium is the correct name instead if this species is regarded as a separate species (i.e., if its nomenclatural type is not assigned to another species whose name is validly published, legitimate and not rejected and has priority) within a separate genus Selenomonas.
  • 😷 The risk group for Canada has been imported on 2024-02-27. The full classification is: risk group = 1, note = "Animal classification RG: 1 - Security sensitive biological agent: No - Terrestrial animal pathogen under Canadian Food Inspection Agency authority: No - Containment level: Containment Level 1". — If in doubt, use the risk group given in the regulations for your country and, if these are not available, use the risk group given in the catalogue of the culture collection from which you have obtained or intend to obtain the strain.
  • 🎓 Name mentioned 346 times in PubMed until 2026-06-11.
  • 🙅 This name is on the List of Recommended Names for bacteria of medical importance (LoRN) as a synonym of the name to be applied to this species. The name is on LoRN because of the recorded risk group of the genus.

Subdivision:

Number of child taxa with a validly published and correct name: 0
Number of child taxa with a validly published name, including synonyms: 2
Total number of child taxa: 2

• Child taxa:

  • Name	Nomenclatural status	Taxonomic status
    Selenomonas ruminantium subsp. lactilytica Bryant 1956 (Approved Lists 1980)	validly published under the ICNP	synonym
    Selenomonas ruminantium subsp. ruminantium (Certes 1889) Bryant 1956 (Approved Lists 1980)	validly published under the ICNP	orphaned subspecies

Parent taxon: Selenomonas von Prowazek 1913 (Approved Lists 1980)

Assigned by: Wenyon CM. Protozoology, Vol.1. Bailliere, Tindall & Cox, London, 1926.

Linking: To permanently link to this page, use https://doi.org/10.83108/rn.784873Copy to clipboardLink copied to clipboard

Record number: 784873

• Previous versions:

  • Version	Date	JSON
    1	2026-03-31