Name: Cytophaga aurantiaca (ex Winogradsky 1929) Reichenbach 1989

Category: Species

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

Etymology: au.ran.ti’a.ca. N.L. fem. adj. aurantiaca, orange colored

Pronunciation (Latin), gender: ky-TO-p^ha-ga a͡u-ran-TI-a-ka, feminine

Type strain: ATCC 12208; DSM 3654; JCM 8511; NCIB 8628; NCIMB 8628

Conduct genome-based taxonomy at

16S rRNA gene: AB681044 Analyse FASTA

Effective publication: Reichenbach H. Genus I. Cytophaga Winogradsky 1929, 577, emend. In: Staley JT, Bryant MP, Pfennig N, Holt JG (eds), Bergey's manual of systematic bacteriology, vol. 3., The Williams & Wilkins Co., Baltimore, 1989, p. 2015-2020. 🇩🇪

IJSEM list: Anonymous. Validation list no. 31. Validation of publication of new names and new combinations previously effectively published outside the IJSB. Int J Syst Bacteriol 1989; 39:495-497.

Nomenclatural status: validly published under the ICNP

Taxonomic status: correct name (and explicitly recommended for medical use)

Risk group: 1

• Synonyms:

  • Name	Kind
    "Cytophaga aurantiaca" Winogradsky 1929	homotypic synonym, not validly published

• Emendations:
  • Hahnke et al. 2016 Hahnke RL, Meier-Kolthoff JP, Garcia-Lopez M, Mukherjee S, Huntemann M, Ivanova NN, Woyke T, Kyrpides NC, Klenk HP, Goker M. Genome-Based Taxonomic Classification of Bacteroidetes. Front Microbiol 2016; 7:2003. 🇩🇪 Oren A, Garrity GM. List of changes in taxonomic opinion no. 26. Notification of changes in taxonomic opinion previously published outside the IJSEM. Int J Syst Evol Microbiol 2017; 67:2081-2086.
    Notes:
    • 🧍 The genome of the type strain was sequenced as part of the GEBA (Genomic Encyclopedia of Bacteria and Archaea) project.

• Notes:
  • 😷 The risk group for Canada has been imported on 2024-02-27. The full classification is: risk group = 1, note = "Security sensitive biological agent: No - Terrestrial animal pathogen under Canadian Food Inspection Agency authority: No". — 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 4 times in PubMed until 2026-06-11.
  • 🙆 This name is on the List of Recommended Names for bacteria of medical importance (LoRN) as the name to be applied to this species. The name is on LoRN because of the recorded risk group of other species in the genus.
  • 🧍 In Validation List no. 31, the page numbers of the paper by Reichenbach 1989 are erroneously cited as 2015-2020 (sic). Publication: Euzeby JP, Kudo T. Corrigenda to the validation lists. Int J Syst Evol Microbiol 2001; 51:1933-1938. 🇫🇷

Parent taxon: Cytophaga Winogradsky 1929 (Approved Lists 1980)

Assigned by: Reichenbach H. Genus I. Cytophaga Winogradsky 1929, 577, emend. In: Staley JT, Bryant MP, Pfennig N, Holt JG (eds), Bergey's manual of systematic bacteriology, vol. 3., The Williams & Wilkins Co., Baltimore, 1989, p. 2015-2020. 🇩🇪

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Record number: 775387