Species Thiomonas delicata

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

Category, proposed as: species, comb. nov.

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

Etymology: de.li.ca’ta. L. fem. part. adj. delicata, delicate

Pronunciation (Latin), gender: t^hi-O-mo-nas de-li-KA-ta, feminine

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

Effective publication: Kelly DP, Wood AP. Genus Incertae Sedis XVIII. Thiomonas Moreira and Amils 1997, 527VP. In: Brenner DJ, Krieg NR, Staley JT, Garrity GM (eds), Bergey's Manual of Systematic Bacteriology, second edition, vol. 2 (The Proteobacteria) part C (The Alpha-, Beta-, Delta-, and Epsilonproteobacteria), Springer, New York, 2005, p. 757-759. 🇬🇧

IJSEM list: Euzeby JP. Validation list no. 109. List of new names and new combinations previously effectively, but not validly, published. Int J Syst Evol Microbiol 2006; 56:925-927.

Nomenclatural status: validly published under the ICNP

Taxonomic status: correct name

Risk group: 1

• Synonyms:

  • Name	Kind
    Thiobacillus delicatus (ex Mizoguchi et al. 1976) Katayama-Fujimura et al. 1984	homotypic synonym, validly published under the ICNP
    Thiobacillus cuprinus Huber and Stetter 2026	heterotypic synonym, validly published under the ICNP, belated name
    Thiomonas cuprina Moreira and Amils 1997	heterotypic synonym, validly published under the ICNP

• Emendations:
  • Katayama et al. 2006 Katayama Y, Uchino Y, Wood AP, Kelly DP. Confirmation of Thiomonas delicata (formerly Thiobacillus delicatus) as a distinct species of the genus Thiomonas Moreira and Amils 1997 with comments on some species currently assigned to the genus. Int J Syst Evol Microbiol 2006; 56:2553-2557. 🇬🇧 Euzeby JP. Notification list. Notification that new names and new combinations have appeared in volume 56, part 11 of the IJSEM. Int J Syst Evol Microbiol 2007; 57:199-200.
    Notes:
    • 🧍 The transfer of Thiobacillus delicatus (ex Mizoguchi et al. 1976) Katayama-Fujimura et al. 1984 to the genus Thiomonas Moreira and Amils 1997 as a distinct species, Thiomonas delicata (Katayama-Fujimura et al. 1984) Kelly and Wood 2006, is confirmed by its morphological and physiological properties, DNA-DNA hybridization, and the grouping of its 16S rRNA gene sequence with those of other species of the genus.
  • Battaglia-Brunet et al. 2011 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. 🇫🇷 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.
    Notes:
    • 🫂 Emendation accompanied by a proposal regarding the synonymy of the species.

• Notes:
  • ⏰ 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. 🇫🇷
  • ⏰ According to Battaglia-Brunet et al. (2011), this species is an earlier heterotypic synonym of Thiobacillus cuprinus Huber and Stetter 2026. 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.
  • 😷 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 8 times in PubMed until 2026-06-11.
  • 🧍 The culture collection accession numbers KCTC 2851, NBRC 14566, and DSM 17897 have been provided on request for validation. Publication: Euzeby JP. Validation list no. 110. List of new names and new combinations previously effectively, but not validly, published. Int J Syst Evol Microbiol 2006; 56:1459-1460.
  • 🧍 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: Thiomonas Moreira and Amils 1997

Assigned by: Kelly DP, Wood AP. Genus Incertae Sedis XVIII. Thiomonas Moreira and Amils 1997, 527VP. In: Brenner DJ, Krieg NR, Staley JT, Garrity GM (eds), Bergey's Manual of Systematic Bacteriology, second edition, vol. 2 (The Proteobacteria) part C (The Alpha-, Beta-, Delta-, and Epsilonproteobacteria), Springer, New York, 2005, p. 757-759. 🇬🇧

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Record number: 782761