Name: Intestinimonas massiliensis Afouda et al. 2020

Category: Species

Proposed as: sp. nov.

Etymology: mas.si.li.en’sis. L. fem. adj. massiliensis, of Massilia, the ancient Roman name for Marseille, where the strain was isolated

Pronunciation (Latin), gender: in-tes-ti-NI-mo-nas mas-si-li-EN-sis, feminine

Type strain: CSUR P1930; DSM 100417; GD2; P1930

Conduct genome-based taxonomy at

16S rRNA gene: LN866996 Analyse FASTA

Effective publication: Afouda P, Durand GA, Lagier JC, Labas N, Cadoret F, Armstrong N, Raoult D, Dubourg G. Noncontiguous finished genome sequence and description of Intestinimonas massiliensis sp. nov strain GD2^T, the second Intestinimonas species cultured from the human gut. Microbiologyopen 2019; 8:e00621. 🇫🇷

IJSEM list: Oren A, Garrity GM. Validation list no. 194. List of new names and new combinations previously effectively, but not validly, published. Int J Syst Evol Microbiol 2020; 70:4043-4049.

Nomenclatural status: validly published under the ICNP

Taxonomic status: correct name

• Synonyms:

  • Name	Kind
    "Intestinimonas massiliensis" Durand et al. 2017	homotypic synonym, not validly published

• Notes:
  • 🧬 The phylogenomic assignment score of this taxon is 0.11169 (N = 31).
  • 🎓 Name mentioned 12 times in PubMed until 2026-06-11.
  • 🧍 According to Ludwig et al. (2021), this "species affiliates away from its type species and may be reclassified as a new genus". Publication: Ludwig W, Viver T, Westram R, Francisco Gago J, Bustos-Caparros E, Knittel K, Amann R, Rossello-Mora R. Release LTP_12_2020, featuring a new ARB alignment and improved 16S rRNA tree for prokaryotic type strains. Syst Appl Microbiol 2021; 44:126218. 🇪🇸

Parent taxon: Intestinimonas Kläring et al. 2013

Assigned by: Afouda P, Durand GA, Lagier JC, Labas N, Cadoret F, Armstrong N, Raoult D, Dubourg G. Noncontiguous finished genome sequence and description of Intestinimonas massiliensis sp. nov strain GD2^T, the second Intestinimonas species cultured from the human gut. Microbiologyopen 2019; 8:e00621. 🇫🇷

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Record number: 11068