Name: Thiobacillus delicatus (ex Mizoguchi et al. 1976) Katayama-Fujimura et al. 1984

Category: Species

Proposed as: sp. nov., nom. rev.

Etymology: de.li.ca’tus. L. masc. part. adj. delicatus, delicate

Gender: masculine

Type strain: DSM 17897; IAM 12624; IFO 14566; KCTC 2851; NBRC 14566; THI 91

See detailed strain information at

16S rRNA gene: AB245481 Analyse FASTA

Valid publication: Katayama-Fujimura Y, Kawashima I, Tsuzaki N, Kuraishi H. Physiological characteristics of the facultatively chemolithotrophic Thiobacillus species Thiobacillus delicatus nom. rev., emend., Thiobacillus perometabolis, and Thiobacillus intermedius. Int. J. Syst. Bacteriol. 1984; 34:139-144.

Nomenclatural status: validly published under the ICNP

Taxonomic status: synonym

Correct name: Thiomonas delicata (Katayama-Fujimura et al. 1984 ex Mizoguchi et al. 1976) Kelly and Wood 2006

Risk group: 1

• Synonyms:

  • Name	Kind
    Thiomonas delicata (Katayama-Fujimura et al. 1984 ex Mizoguchi et al. 1976) Kelly and Wood 2006	homotypic synonym, validly published under the ICNP
    "Thiobacillus cuprinus" Huber and Stetter 1990	heterotypic synonym, not validly published
    Thiomonas cuprina Moreira and Amils 1997	heterotypic synonym, validly published under the ICNP

• Notes:
  • ⏰ According to Battaglia-Brunet et al. (2011), this species is an earlier heterotypic synonym of "Thiobacillus cuprinus" Huber and Stetter 1990. Publication: Battaglia-Brunet F, El Achbouni H, Quemeneur M, Hallberg KB, Kelly DP, Joulian C. Proposal that the arsenite-oxidizing organisms Thiomonas cuprina and 'Thiomonas arsenivorans' be reclassified as strains of Thiomonas delicata, and emended description of Thiomonas delicata. Int J Syst Evol Microbiol 2011; 61:2816-2821.
  • ⏰ According to Battaglia-Brunet et al. (2011), this species is an earlier heterotypic synonym of Thiomonas cuprina Moreira and Amils 1997. Publication: Battaglia-Brunet F, El Achbouni H, Quemeneur M, Hallberg KB, Kelly DP, Joulian C. Proposal that the arsenite-oxidizing organisms Thiomonas cuprina and 'Thiomonas arsenivorans' be reclassified as strains of Thiomonas delicata, and emended description of Thiomonas delicata. Int J Syst Evol Microbiol 2011; 61:2816-2821.
  • 🏢 Synonymy of this taxon was mentioned in an IJSEM list. Publication: Euzeby JP. Notification list. Notification that new names and new combinations have appeared in volume 61, part 12 of the IJSEM. Int J Syst Evol Microbiol 2012; 62:476-477.
  • ❗ Thiobacillus delicatus 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 Canada has been imported on 2024-02-27. The full classification is: risk group = 1, note = "Animal classification RG: 1 - Security sensitive biological agent: No - Terrestrial animal pathogen under Canadian Food Inspection Agency authority: No - Containment level: Containment Level 1". — 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.
  • 🎓 Name mentioned 1 time in PubMed until 2025-06-04.
  • 🧍 The type strain IAM 12624, cited in the effective publication, is not available (the IAMCC lost the culture). — Kelly DP. Personal communication, 2006-05-06.

Parent taxon: Thiobacillus Beijerinck 1904 (Approved Lists 1980)

Assigned by: Katayama-Fujimura Y, Kawashima I, Tsuzaki N, Kuraishi H. Physiological characteristics of the facultatively chemolithotrophic Thiobacillus species Thiobacillus delicatus nom. rev., emend., Thiobacillus perometabolis, and Thiobacillus intermedius. Int. J. Syst. Bacteriol. 1984; 34:139-144.

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Record number: 782709