Name: Bacteroides melaninogenicus subsp. intermedius Holdeman and Moore 1970 (Approved Lists 1980)

Category: Subspecies

Proposed as: subsp. nov.

Etymology: in.ter.me’di.us. L. masc. adj. intermedius, intermediate

Pronunciation, gender: in-ter-ME-di-us, masculine

Type strain: ATCC 25611; CCUG 24041; CIP 101222; CIP 103682; DSM 20706; Finegold B422; JCM 11150; JCM 12248; NCTC 13070; VPI 4197

Conduct genome-based taxonomy at

16S rRNA gene: AB547686 Analyse FASTA

Effective publication: Holdeman LV, Moore WEC. Bacteroides. In: Cato EP, Cummins CS, Holdeman LV, Johnson JL, Moore WEC, Smibert RM, Smith LDS (eds), Outline of Clinical Methods in Anaerobic Bacteriology, 2nd revision, Virginia Polytechnic Institute - Anaerobe Laboratory, Blacksburg/Virginia, 1970, p. 33-44.

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: Prevotella intermedia (Holdeman and Moore 1970) Shah and Collins 1990

Risk group: 2

• Synonyms:

  • Name	Kind
    Prevotella intermedia (Holdeman and Moore 1970) Shah and Collins 1990	homotypic synonym, validly published under the ICNP, distinct rank
    Bacteroides intermedius (Holdeman and Moore 1970) Johnson and Holdeman 1983	homotypic synonym, validly published under the ICNP, distinct rank

• Notes:
  • ❗ Bacteroides melaninogenicus subsp. intermedius 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 Bacteroides melaninogenicus within a separate genus Bacteroides.
  • 😷 The risk group for Belgium has been imported on 2024-02-05. The full classification is: risk group = 2, note = "human pathogen". — The risk group for Canada has been imported on 2024-02-27. The full classification is: risk group = 2, note = "Animal classification RG: 1 - Security sensitive biological agent: No - Terrestrial animal pathogen under Canadian Food Inspection Agency authority: No - Containment level: Containment Level 2". — The risk group for Swiss Confederation has been imported on 2024-02-01. The full classification is: risk group = 2. — The risk group for Germany has been imported on 2023-10-29. The full classification is: risk group = 2, note = "ht". — 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 species itself.

Parent taxon: Bacteroides melaninogenicus (Oliver and Wherry 1921) Roy and Kelly 1939 (Approved Lists 1980)

Assigned by: Holdeman LV, Moore WEC. Bacteroides. In: Cato EP, Cummins CS, Holdeman LV, Johnson JL, Moore WEC, Smibert RM, Smith LDS (eds), Outline of Clinical Methods in Anaerobic Bacteriology, 2nd revision, Virginia Polytechnic Institute - Anaerobe Laboratory, Blacksburg/Virginia, 1970, p. 33-44.

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Record number: 773958