Name: Selenomonas ruminantium subsp. lactilytica Bryant 1956 (Approved Lists 1980)

Category: Subspecies

Proposed as: subsp. nov.

Etymology: lac.ti.ly’ti.ca. L. neut. n. lac (gen. lactis), milk; N.L. fem. adj. lytica, able to loose, able to dissolve; from Gr. fem. adj. lytikê, able to loosen; N.L. fem. adj. lactilytica, milk (lactate) dissolving

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

Type strain: ATCC 19205; DSM 2872; JCM 6582; PC 18

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: AB003379 Analyse FASTA

Effective publication: Bryant MP. The characteristics of strains of Selenomonas isolated from bovine rumen contents. J Bacteriol 1956; 72:162-167.

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 lactilytica (Bryant 1956) Heng and Kittelmann 2026

Risk group: 1

• Synonyms:

  • Name	Kind
    Pseudoselenomonas lactilytica (Bryant 1956) Heng and Kittelmann 2026	homotypic synonym, validly published under the ICNP, distinct rank

• Notes:
  • ❗ Selenomonas ruminantium subsp. lactilytica is the correct name instead if this subspecies is regarded as a separate subspecies (i.e., if its nomenclatural type is not assigned to another subspecies whose name is validly published, legitimate and not rejected and has priority) within a separate species Selenomonas ruminantium 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 = "Security sensitive biological agent: No - Terrestrial animal pathogen under Canadian Food Inspection Agency authority: No". — The risk group for Swiss Confederation has been imported on 2024-02-01. The full classification is: risk group = 1. — The risk group for Germany has been imported on 2023-10-29. The full classification is: risk group = 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.
  • 🙅 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 subspecies. The name is on LoRN because of the recorded risk group of the genus.

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

Assigned by: Bryant MP. The characteristics of strains of Selenomonas isolated from bovine rumen contents. J Bacteriol 1956; 72:162-167.

Linking: To permanently link to this page, use https://doi.org/10.83108/rn.780850Copy to clipboardLink copied to clipboard

Record number: 780850

• Previous versions:

  • Version	Date	JSON
    1	2026-03-31