Name: Megamonas rupellensis Chevrot et al. 2008

Category: Species

Proposed as: sp. nov.

Etymology: ru.pel.len’sis. M.L. fem. adj. rupellensis, referring to La Rochelle, the site of isolation of the type strain

Pronunciation (Latin), gender: me-GA-mo-nas ru-pel-LEN-sis, feminine

Type strain: CIP 109788; DSM 19944; FM1025

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: EU346729 Analyse FASTA

Valid publication: Chevrot R, Carlotti A, Sopena V, Marchand P, Rosenfeld E. Megamonas rupellensis sp. nov., an anaerobe isolated from the caecum of a duck. Int J Syst Evol Microbiol 2008; 58:2921-2924. 🇫🇷

IJSEM list: Euzeby JP. Notification list. Notification that new names and new combinations have appeared in volume 58, part 12 of the IJSEM. Int J Syst Evol Microbiol 2009; 59:452-453.

Nomenclatural status: validly published under the ICNP

Taxonomic status: synonym (and not recommended for medical use)

Correct name: Megamonas funiformis Sakon et al. 2008

Risk group: 1

• Synonyms:

  • Name	Kind
    Megamonas funiformis Sakon et al. 2008	heterotypic synonym, validly published under the ICNP

• Notes:
  • ⏲ According to Heng and Kittelmann (2026), this species is a later heterotypic synonym of Megamonas funiformis Sakon et al. 2008. Publication: Heng YC, Kittelmann S. Taxonomic reclassification and expansion of the family Selenomonadaceae. Int J Syst Evol Microbiol 2026; 76:7178. 🇸🇬
  • ❗ Megamonas rupellensis 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 Megamonas.
  • 🧬 The phylogenomic assignment score of this taxon is 0.16925 (N = 6).
  • 😷 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 8 times in PubMed until 2026-06-11.
  • 🙅 This name is on the List of Recommended Names for bacteria of medical importance (LoRN) as a synonym of the name to be applied to this species. The name is on LoRN because of the recorded pathogenicity of other species in the genus.
  • 🧍 The genome of the type strain was sequenced as part of the GEBA (Genomic Encyclopedia of Bacteria and Archaea) project. Publication: Mukherjee S, Seshadri R, Varghese NJ, Eloe-Fadrosh EA, Meier-Kolthoff JP, Goker M, Coates RC, Hadjithomas M, Pavlopoulos GA, Paez-Espino D, et al. 1,003 reference genomes of bacterial and archaeal isolates expand coverage of the tree of life. Nat Biotechnol 2017; 35:676-683. 🇺🇸

Parent taxon: Megamonas Shah and Collins 1983

Assigned by: Chevrot R, Carlotti A, Sopena V, Marchand P, Rosenfeld E. Megamonas rupellensis sp. nov., an anaerobe isolated from the caecum of a duck. Int J Syst Evol Microbiol 2008; 58:2921-2924. 🇫🇷

Linking: To permanently link to this page, use https://doi.org/10.83108/rn.787077Copy to clipboardLink copied to clipboard

Record number: 787077

• Previous versions:

  • Version	Date	JSON
    1	2026-03-31