Name: Tatlockia maceachernii (Brenner et al. 1985) Fox et al. 1991

Category: Species

Proposed as: comb. nov.

Basonym: Legionella maceachernii Brenner et al. 1985

Etymology: ma.ce.a.cher’ni.i. N.L. gen. masc. n. maceachernii, of McEachern, named after Harold V. McEachern, who first isolated the organism

Pronunciation (Latin), gender: … ma-ke-a-K^HER-ni-i, feminine

Type strain: ATCC 35300; CCUG 31116; CIP 103846; DSM 16642; JCM 7566; NCTC 11982; Px-1-G-2-E2

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: AF227161 Analyse FASTA

Effective publication: Fox KF, Brown A, Fox A, Schnitzer G. Tatlockia, a genetically and chemically distinct group of bacteria. Proposal to transfer Legionella maceachernii (Brenner et al.) to the genus Tatlockia, as Tatlockia maceachernii comb. nov. Syst. Appl. Microbiol. 1991; 14:52-56.

IJSEM list: Anonymous. Validation list no. 38. Validation of publication of new names and new combinations previously effectively published outside the IJSB. Int J Syst Bacteriol 1991; 41:456-457.

Nomenclatural status: validly published under the ICNP

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

Correct name: Legionella maceachernii Brenner et al. 1985

Risk group: 2

• Synonyms:

  • Name	Kind
    Legionella maceachernii Brenner et al. 1985	homotypic synonym, validly published under the ICNP

• Notes:
  • ❗ Tatlockia maceachernii 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 Tatlockia.
  • 😷 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. — The risk group for Taiwan has been imported on 2024-11-03. The full classification is: risk group = 2, note = "P650 = v". — 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 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.
  • 🧍 According to Bartlett et al. (2022), this species is an established human pathogen. Publication: Bartlett A, Padfield D, Lear L, Bendall R, Vos M. A comprehensive list of bacterial pathogens infecting humans. Microbiology (Reading) 2022; 168:0. 🇬🇧
  • 🧍 The name Tatlockia maceachernii (Brenner et al. 1985) Fox et al. 1991 is a correct name (Principle 6). According to his/her scientific opinion, a bacteriologist may use the names Tatlockia maceachernii (Brenner et al. 1985) Fox et al. 1991 or Legionella maceachernii Brenner et al. 1985. However, the names Tatlockia Garrity et al. 1980, and Tatlockia maceachernii (Brenner et al. 1985) Fox et al. 1991 have never found widespread usage. Publication: Garrity GM, Brown A, Vickers RM. Tatlockia and Fluoribacter: two new genera of organisms resembling Legionella pneumophila. Int. J. Syst. Bacteriol. 1980; 30:609-614. 🇺🇸

Parent taxon: Tatlockia Garrity et al. 1980

Assigned by: Fox KF, Brown A, Fox A, Schnitzer G. Tatlockia, a genetically and chemically distinct group of bacteria. Proposal to transfer Legionella maceachernii (Brenner et al.) to the genus Tatlockia, as Tatlockia maceachernii comb. nov. Syst. Appl. Microbiol. 1991; 14:52-56.

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Record number: 782387