Name: Segatella buccae (Holdeman et al. 1982) Hitch et al. 2023

Category: Species

Proposed as: comb. nov.

Basonym: Bacteroides buccae Holdeman et al. 1982

Etymology: buc’cae. L. gen. fem. n. buccae, of the mouth, referring to a major natural habitat of the species

Pronunciation, gender: BUK-ka͡e, feminine

Type strain: ATCC 33574; CCUG 15401; CIP 105106; DSM 19025; JCM 12245; VPI D3A-6

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: AB547675 Analyse FASTA

Effective publication: Hitch TCA, Bisdorf K, Afrizal A, Riedel T, Overmann J, Strowig T, Clavel T. A taxonomic note on the genus Prevotella: Description of four novel genera and emended description of the genera Hallella and Xylanibacter. Syst Appl Microbiol 2022; 45:126354.

IJSEM list: Oren A, Göker M. Validation list no. 209. List of new names and new combinations previously effectively, but not validly, published. Int J Syst Evol Microbiol 2023; 73:5709.

Nomenclatural status: validly published under the ICNP

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

Correct name: Prevotella buccae (Holdeman et al. 1982) Shah and Collins 1990

• Synonyms:

  • Name	Kind
    Bacteroides pentosaceus Shah and Collins 1982	heterotypic synonym, validly published under the ICNP
    Bacteroides capillus Kornman and Holt 1982	heterotypic synonym, validly published under the ICNP
    Prevotella buccae (Holdeman et al. 1982) Shah and Collins 1990	homotypic synonym, validly published under the ICNP
    Bacteroides buccae Holdeman et al. 1982	homotypic synonym, validly published under the ICNP

• Notes:
  • ⏰ According to Johnson and Holdeman (1985), this species is an earlier heterotypic synonym of Bacteroides capillus Kornman and Holt 1982. Publication: Johnson JL, Holdeman LV. Bacteroides capillus Kornman and Holt and Bacteroides pentosaceus Shah and Collins, later synonyms of Bacteroides buccae Holdeman et al. Int. J. Syst. Bacteriol. 1985; 35:114.
  • ⏰ According to Shah and Collins (1990), this species is an earlier heterotypic synonym of Bacteroides pentosaceus Shah and Collins 1982. Publication: Shah HN, Collins DM. Prevotella, a new genus to include Bacteroides melaninogenicus and related species formerly classified in the genus Bacteroides. Int J Syst Bacteriol 1990; 40:205-208.
  • ❗ Segatella buccae 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 Segatella.
  • 😷 The taxon name shown here has no risk group assigned, but is the homotypic synonym of Bacteroides buccae Holdeman et al. 1982, which has a risk group (Belgium) above 1. This may require that the name shown here is not treated as the correct name for practical purposes. — The taxon name shown here has no risk group assigned, but is the homotypic synonym of Bacteroides buccae Holdeman et al. 1982, which has a risk group (Canada) above 1. This may require that the name shown here is not treated as the correct name for practical purposes. — The taxon name shown here has no risk group assigned, but is the homotypic synonym of Bacteroides buccae Holdeman et al. 1982, which has a risk group (Swiss Confederation) above 1. This may require that the name shown here is not treated as the correct name for practical purposes. — The taxon name shown here has no risk group assigned, but is the homotypic synonym of Bacteroides buccae Holdeman et al. 1982, which has a risk group (Germany) above 1. This may require that the name shown here is not treated as the correct name for practical purposes.
  • 😷 The taxon name shown here has no risk group assigned, but is the homotypic synonym of Prevotella buccae (Holdeman et al. 1982) Shah and Collins 1990, which has a risk group (Belgium) above 1. This may require that the name shown here is not treated as the correct name for practical purposes. — The taxon name shown here has no risk group assigned, but is the homotypic synonym of Prevotella buccae (Holdeman et al. 1982) Shah and Collins 1990, which has a risk group (Canada) above 1. This may require that the name shown here is not treated as the correct name for practical purposes. — The taxon name shown here has no risk group assigned, but is the homotypic synonym of Prevotella buccae (Holdeman et al. 1982) Shah and Collins 1990, which has a risk group (Swiss Confederation) above 1. This may require that the name shown here is not treated as the correct name for practical purposes. — The taxon name shown here has no risk group assigned, but is the homotypic synonym of Prevotella buccae (Holdeman et al. 1982) Shah and Collins 1990, which has a risk group (Germany) above 1. This may require that the name shown here is not treated as the correct name for practical purposes. — The taxon name shown here has no risk group assigned, but is the homotypic synonym of Prevotella buccae (Holdeman et al. 1982) Shah and Collins 1990, which has a risk group (Taiwan) above 1. This may require that the name shown here is not treated as the correct name for practical purposes.
  • 🎓 Name mentioned 0 times in PubMed until 2025-06-04.
  • 🙅 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 species itself.

Parent taxon: Segatella Hitch et al. 2023

Assigned by: Hitch TCA, Bisdorf K, Afrizal A, Riedel T, Overmann J, Strowig T, Clavel T. A taxonomic note on the genus Prevotella: Description of four novel genera and emended description of the genera Hallella and Xylanibacter. Syst Appl Microbiol 2022; 45:126354.

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Record number: 36184