Name: Methanocaldococcus villosus Bellack et al. 2011

Category: Species

Proposed as: sp. nov.

Etymology: vil.lo’sus. L. masc. adj. villosus, hairy, rough, shaggy, villous, referring to the numerous flagella that form a dense network or bundle and the extraordinary surface structure in SEM preparations

Pronunciation, gender: wil-LO-sus, masculine

Type strain: DSM 22612; JCM 16315; KIN24-T80

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: FJ766848 Analyse FASTA

Valid publication: Bellack A, Huber H, Rachel R, Wanner G, Wirth R. Methanocaldococcus villosus sp. nov., a heavily flagellated archaeon that adheres to surfaces and forms cell-cell contacts. Int J Syst Evol Microbiol 2011; 61:1239-1245.

IJSEM list: Euzeby JP. Notification list. Notification that new names and new combinations have appeared in volume 61, part 6 of the IJSEM. Int J Syst Evol Microbiol 2011; 61:2027-2028.

Nomenclatural status: validly published under the ICNP

Taxonomic status: correct name

Risk group: 1

• Notes:
  • 😷 The risk group for Germany has been imported on 2023-10-29. 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 7 times in PubMed until 2025-06-04.

Parent taxon: Methanocaldococcus Whitman 2002

Assigned by: Bellack A, Huber H, Rachel R, Wanner G, Wirth R. Methanocaldococcus villosus sp. nov., a heavily flagellated archaeon that adheres to surfaces and forms cell-cell contacts. Int J Syst Evol Microbiol 2011; 61:1239-1245.

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Record number: 789276