Species Sulfolobus hakonensis

Name: Sulfolobus hakonensis Takayanagi et al. 1996

Category, proposed as: species, sp. nov.

Etymology: ha.ko.nen’sis. N.L. masc. adj. hakonensis, pertaining to Hakone, Japan, where the type strain was isolated

Pronunciation (Latin), gender: sul-FO-lo-bus ha-ko-NEN-sis, masculine

Type strain: ATCC 51241; DSM 7519; HO1-1; IAM 14250; JCM 8857

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: D86414 Analyse FASTA

Valid publication: Takayanagi S, Kawasaki H, Sugimori K, Yamada T, Sugai A, Ito T, Yamasato K, Shioda M. Sulfolobus hakonensis sp. nov., a novel species of acidothermophilic archaeon. Int J Syst Bacteriol 1996; 46:377-382. 🇯🇵

IJSEM list: Anonymous. Notification list. Notification that new names and new combinations have appeared in volume 46, part 2 of the IJSB. Int J Syst Bacteriol 1996; 46:838.

Nomenclatural status: validly published under the ICNP

Taxonomic status: synonym

Correct name: Metallosphaera hakonensis (Takayanagi et al. 1996) Kurosawa et al. 2003

Risk group: 1

• Synonyms:

  • Name	Kind
    Metallosphaera hakonensis (Takayanagi et al. 1996) Kurosawa et al. 2003	homotypic synonym, validly published under the ICNP

• Notes:
  • ❗ Sulfolobus hakonensis 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 Sulfolobus.
  • 😷 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 2 times in PubMed until 2026-06-11.

Parent taxon: Sulfolobus Brock et al. 1972 (Approved Lists 1980)

Assigned by: Takayanagi S, Kawasaki H, Sugimori K, Yamada T, Sugai A, Ito T, Yamasato K, Shioda M. Sulfolobus hakonensis sp. nov., a novel species of acidothermophilic archaeon. Int J Syst Bacteriol 1996; 46:377-382. 🇯🇵

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Record number: 782312