Name: Picrophilus torridus Zillig et al. 1996

Category: Species

Proposed as: sp. nov.

Etymology: tor.ri.dus. L. masc. adj. torridus, dried up, torrid, referring to dry hot soil where the strain was isolated

Gender: masculine

Type strain: DSM 9790; JCM 10055; NBRC 100828

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: AE017261 Analyse FASTA

Valid publication: Schleper C, Pühler G, Klenk HP, Zillig W. Picrophilus oshimae and Picrophilus torridus fam. nov., gen. nov., sp. nov., two species of hyperacidophilic, thermophilic, heterotrophic, aerobic archaea. Int. J. Syst. Bacteriol. 1996; 46:814-816.

IJSEM list: Anonymous. Notification list. Notification that new names and new combinations have appeared in volume 46, part 3 of the IJSB. Int J Syst Bacteriol 1996; 46:1191.

Nomenclatural status: validly published under the ICNP

Taxonomic status: synonym

Correct name: Picrophilus oshimae Schleper et al. 1996

Risk group: 1

• Synonyms:

  • Name	Kind
    Picrophilus oshimae Schleper et al. 1996	heterotypic synonym, validly published under the ICNP

• Notes:
  • ⏲ According to Habib et al. (2023), this species is a later heterotypic synonym of Picrophilus oshimae Schleper et al. 1996. Publication: Habib N, Narsing Rao MP, Jan SA, Banerjee A, Thamchaipenet A, Li WJ. Genome-based reclassification of Picrophilus torridus Zillig et al. 1996 as a later heterotypic synonym of Picrophilus oshimae Schleper et al. 1996. Int J Syst Evol Microbiol 2023; 73:5851.
  • 🏢 Synonymy of this taxon was mentioned in an IJSEM list. Publication: Oren A, Göker M. Notification list. Notification that new names and new combinations have appeared in volume 73, part 4 of the IJSEM. Int J Syst Evol Microbiol 2023; 73:5937.
  • ❗ Picrophilus torridus 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 Picrophilus.
  • ✏ The authority of the taxon name (Zillig et al.) deliberately differs from the authors of the publication (Schleper et al.).
  • 😷 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 2023-10-29. The full classification is: risk group = 1.
  • 🎓 Name mentioned 49 times in PubMed until 2024-03-28.
  • 🧍 In the paper by Schleper et al. 1996, no type strain was designated. Publication: Euzeby JP. List of Bacterial Names with Standing in Nomenclature: a folder available on the Internet. Int J Syst Bacteriol 1997; 47:590-592.
  • 🧍 Complete authorship reads: Schleper, Zillig and Pühler 1996 in Schleper, Pühler, Klenk and Zillig 1996. — 🧍 Complete authorship reads: Zillig, Schleper and Pühler.

Parent taxon: Picrophilus Schleper et al. 1996

Assigned by: Schleper C, Pühler G, Klenk HP, Zillig W. Picrophilus oshimae and Picrophilus torridus fam. nov., gen. nov., sp. nov., two species of hyperacidophilic, thermophilic, heterotrophic, aerobic archaea. Int. J. Syst. Bacteriol. 1996; 46:814-816.

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Record number: 779619