Name: Thiobacillus intermedius London 1963 (Approved Lists 1980)

Category: Species

Proposed as: sp. nov.

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

Pronunciation (Latin), gender: t^hi-o-ba-KIL-lus in-ter-ME-di-us, masculine

Type strain: ATCC 15466; CIP 104401; DSM 18155; IFO 14564; JCM 20425; NBRC 14564

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: AY455809 Analyse FASTA

Effective publication: London JP. Thiobacillus intermedius nov. sp. A novel type of facultative autotroph. Archiv für Mikrobiologie 1963; 46:329-337.

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

Correct name: Thiomonas intermedia (London 1963) Moreira and Amils 1997

Risk group: 1

• Synonyms:

  • Name	Kind
    Thiomonas intermedia (London 1963) Moreira and Amils 1997	homotypic synonym, validly published under the ICNP

• Notes:
  • ❗ Thiobacillus intermedius 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 Thiobacillus.
  • 😷 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 2026-08-13. 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.
  • 🎓 Name mentioned 27 times in PubMed until 2026-06-11.

Parent taxon: Thiobacillus Beijerinck 1904 (Approved Lists 1980)

Assigned by: London JP. Thiobacillus intermedius nov. sp. A novel type of facultative autotroph. Archiv für Mikrobiologie 1963; 46:329-337.

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Record number: 785078