Name: Stomatobaculum longum Sizova et al. 2013

Category: Species

Proposed as: sp. nov.

Etymology: lon’gum. L. neut. adj. longum, long (in shape)

Pronunciation (Latin), gender: … LON-gum, neuter

Type strain: ACC2; BEI HM-480; DSM 24645

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: HM120209 Analyse FASTA

Valid publication: Sizova MV, Muller P, Panikov N, Mandalakis M, Hohmann T, Hazen A, Fowle W, Prozorov T, Bazylinski DA, Epstein SS. Stomatobaculum longum gen. nov., sp. nov., an obligately anaerobic bacterium from the human oral cavity. Int J Syst Evol Microbiol 2013; 63:1450-1456. 🇺🇸

IJSEM list: Euzeby JP. Notification list. Notification that new names and new combinations have appeared in volume 63, part 4 of the IJSEM. Int J Syst Evol Microbiol 2013; 63:2368-2370.

Nomenclatural status: validly published under the ICNP

Taxonomic status: correct name (and explicitly recommended for medical use)

Risk group: 1

• Notes:
  • 🥇 Nomenclatural type of the genus Stomatobaculum Sizova et al. 2013. Publication: Sizova MV, Muller P, Panikov N, Mandalakis M, Hohmann T, Hazen A, Fowle W, Prozorov T, Bazylinski DA, Epstein SS. Stomatobaculum longum gen. nov., sp. nov., an obligately anaerobic bacterium from the human oral cavity. Int J Syst Evol Microbiol 2013; 63:1450-1456. 🇺🇸
  • 😷 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 2025-06-04.
  • 🙆 This name is on the List of Recommended Names for bacteria of medical importance (LoRN) as the name to be applied to this species. The name is on LoRN because of the recorded pathogenicity of the species itself.
  • 🧍 According to Bartlett et al. (2022), this species is a putative human pathogen. Publication: Bartlett A, Padfield D, Lear L, Bendall R, Vos M. A comprehensive list of bacterial pathogens infecting humans. Microbiology (Reading) 2022; 168:0. 🇬🇧
  • 🧍 The status of the BEI Resources is not obvious. BEI Resources is funded by the NIAID and managed by ATCC. But it does not appear to be an ATCC collection. — 🧍 The valid publication of the name Stomatobaculum longum is questionable for the following reasons. P.S. The author thanks Dr. Tindall (DSMZ) for his helpful informations. 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. 🇫🇷
  • 🧍 The type strain, originally designated "Lachnospiraceae bacterium ACC2", is deposited in BEI Resources (Biodefense and Emerging Infections Research Resources Repository) as strain HM-480. According to the catalog of the BEI Resources, this item can be ordered once a year. Orders over this limit will be sent to National Institute of Allergy and Infectious Diseases (NIAID) for approval before shipment. See http://www.beiresources.org/Catalog/. Such a restriction is not in accordance with Rule 30 (4) which states that organisms deposited in such a fashion that access is restricted [...] may not serve as type strains. Publication: Oren A, Arahal DR, Christensen H, Goker M, Manaia CM, Moore ERB. International Code of Nomenclature of Prokaryotes. Prokaryotic Code (2025 Revision). Int J Syst Evol Microbiol 2026; 76:6979. 🇮🇱

Parent taxon: Stomatobaculum Sizova et al. 2013

Assigned by: Sizova MV, Muller P, Panikov N, Mandalakis M, Hohmann T, Hazen A, Fowle W, Prozorov T, Bazylinski DA, Epstein SS. Stomatobaculum longum gen. nov., sp. nov., an obligately anaerobic bacterium from the human oral cavity. Int J Syst Evol Microbiol 2013; 63:1450-1456. 🇺🇸

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Record number: 790633