Name: Stygiolobus caldivivus Sakai et al. 2022

Category: Species

Proposed as: sp. nov.

Etymology: cal.di.vi’vus. L. masc. adj. caldus, hot; L. masc. adj. vivus, living; N.L. masc. adj. caldivivus, living in hot environments

Pronunciation (Latin), gender: sty-gi-O-lo-bus kal-di-WI-wus, masculine

Type strain: JCM 34622; KCTC 4293; KN-1

Conduct genome-based taxonomy at

16S rRNA gene: OL438934 Analyse FASTA

Valid publication: Sakai HD, Nakamura K, Kurosawa N. Stygiolobus caldivivus sp. nov., a facultatively anaerobic hyperthermophilic archaeon isolated from the Unzen hot spring in Japan. Int J Syst Evol Microbiol 2022; 72:5486. 🇯🇵

IJSEM list: Oren A, Göker M. Notification list. Notification that new names and new combinations have appeared in volume 72, part 8 of the IJSEM. Int J Syst Evol Microbiol 2022; 72:5644.

Nomenclatural status: validly published under the ICNP

Taxonomic status: correct name

Risk group: 1

• Notes:
  • 😷 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 1 time in PubMed until 2026-06-11.

Parent taxon: Stygiolobus Segerer et al. 1991

Assigned by: Sakai HD, Nakamura K, Kurosawa N. Stygiolobus caldivivus sp. nov., a facultatively anaerobic hyperthermophilic archaeon isolated from the Unzen hot spring in Japan. Int J Syst Evol Microbiol 2022; 72:5486. 🇯🇵

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Record number: 29887