Name: Desulfotomaculum guttoideum Gogotova and Vainstein 1986

Category: Species

Proposed as: sp. nov.

Etymology: gut.to.i’de.um. L. fem. n. gutta, drop; L. suff. -ide, like; N.L. neut. adj. guttoideum, droplike

Gender: neuter

Type strain: 50; DSM 4024; VKM B-1591

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: Y11568 Analyse FASTA

Effective publication: Gogotova GI, Vainstein MB. The sporogenous sulfate reducing bacterium Desulfotomaculum guttoideum sp. nov. Mikrobiologia 1983; 52:789-793.

IJSEM list: Anonymous. Validation list no. 22. Validation of publication of new names and new combinations previously effectively published outside the IJSB. Int J Syst Bacteriol 1986; 36:573-576.

Nomenclatural status: validly published under the ICNP

Taxonomic status: synonym

Correct name: Lacrimispora sphenoides (Douglas et al. 1919) Haas and Blanchard 2020

Risk group: 2

• Synonyms:

  • Name	Kind
    "Bacillus sphenoides" Douglas et al. 1919	heterotypic synonym, not validly published, basonym of name in Approved Lists
    Lacrimispora sphenoides (Douglas et al. 1919) Haas and Blanchard 2020	heterotypic synonym, validly published under the ICNP
    Clostridium sphenoides (Douglas et al. 1919) Bergey et al. 1923 (Approved Lists 1980)	heterotypic synonym, validly published under the ICNP

• Emendations:
  • Haas and Blanchard 2020 Haas KN, Blanchard JL. Reclassification of the Clostridium clostridioforme and Clostridium sphenoides clades as Enterocloster gen. nov. and Lacrimispora gen. nov., including reclassification of 15 taxa. Int J Syst Evol Microbiol 2020; 70:23-34. Oren A, Garrity GM. Notification list. Notification that new names and new combinations have appeared in volume 70, part 1 of the IJSEM. Int J Syst Evol Microbiol 2020; 70:2167-2173.
    Notes:
    • 🫂 Emendation accompanied by a proposal regarding the synonymy of the species.

• Notes:
  • ⏲ According to Haas and Blanchard (2020), this species is a later heterotypic synonym of Lacrimispora sphenoides (Douglas et al. 1919) Haas and Blanchard 2020. Publication: Haas KN, Blanchard JL. Reclassification of the Clostridium clostridioforme and Clostridium sphenoides clades as Enterocloster gen. nov. and Lacrimispora gen. nov., including reclassification of 15 taxa. Int J Syst Evol Microbiol 2020; 70:23-34.
  • ⏲ According to Haas and Blanchard (2020), this species is a later heterotypic synonym of "Bacillus sphenoides" Douglas et al. 1919. Publication: Haas KN, Blanchard JL. Reclassification of the Clostridium clostridioforme and Clostridium sphenoides clades as Enterocloster gen. nov. and Lacrimispora gen. nov., including reclassification of 15 taxa. Int J Syst Evol Microbiol 2020; 70:23-34.
  • ⏲ According to Haas and Blanchard (2020), this species is a later heterotypic synonym of Clostridium sphenoides (Douglas et al. 1919) Bergey et al. 1923 (Approved Lists 1980). Publication: Haas KN, Blanchard JL. Reclassification of the Clostridium clostridioforme and Clostridium sphenoides clades as Enterocloster gen. nov. and Lacrimispora gen. nov., including reclassification of 15 taxa. Int J Syst Evol Microbiol 2020; 70:23-34.
  • 🏢 Synonymy of this taxon was mentioned in an IJSEM list. Publication: Oren A, Garrity GM. Notification list. Notification that new names and new combinations have appeared in volume 70, part 1 of the IJSEM. Int J Syst Evol Microbiol 2020; 70:2167-2173.
  • ❗ Desulfotomaculum guttoideum 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 Desulfotomaculum.
  • 😷 The risk group for Belgium has been imported on 2024-02-05. The full classification is: risk group = 2, note = "human pathogen". — 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 5 times in PubMed until 2024-03-27.
  • 🧍 Desulfotomaculum guttoideum, which shows high levels of relatedness to a cluster of Clostridium, should be excluded from the genus Desulfotomaculum. However, the authors do not propose nomenclatural change. Publication: Stackebrandt E, Sproer C, Rainey FA, Burghardt J, Pauker O, Hippe H. Phylogenetic analysis of the genus Desulfotomaculum: evidence for the misclassification of Desulfotomaculum guttoideum and description of Desulfotomaculum orientis as Desulfosporosinus orientis gen. nov., comb. nov. Int J Syst Bacteriol 1997; 47:1134-1139.
  • 🧍 The VKM strain number has been supplied by M.B. Vainstein. Publication: Anonymous. Validation list no. 22. Validation of publication of new names and new combinations previously effectively published outside the IJSB. Int J Syst Bacteriol 1986; 36:573-576.

Parent taxon: Desulfotomaculum Campbell and Postgate 1965 (Approved Lists 1980)

Assigned by: Gogotova GI, Vainstein MB. The sporogenous sulfate reducing bacterium Desulfotomaculum guttoideum sp. nov. Mikrobiologia 1983; 52:789-793.

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Record number: 775633