Name: Tsukamurella pseudospumae Nam et al. 2004

Category: Species

Proposed as: sp. nov.

Etymology: pseu.do.spu’mae. Gr. masc./fem. adj. pseudês, false; L. gen. fem. n. spumae, of foam and specific epithet of a bacterial species; N.L. gen. fem. n. pseudospumae, the false spumae, referring to the close relationship to Tsukamurella spumae

Pronunciation, gender: pse͡u-do-SPU-ma͡e, feminine

Type strain: DSM 44118; JCM 13375; N1176; NCIMB 13963

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: KX924567 Analyse FASTA

Valid publication: Nam SW, Kim W, Chun J, Goodfellow M. Tsukamurella pseudospumae sp. nov., a novel actinomycete isolated from activated sludge foam. Int J Syst Evol Microbiol 2004; 54:1209-1212.

IJSEM list: Euzeby JP. Notification list. Notification that new names and new combinations have appeared in volume 54, part 4 of the IJSEM. Int J Syst Evol Microbiol 2004; 54:1911-1913.

Nomenclatural status: validly published under the ICNP

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

Risk group: 1

• Synonyms:

  • Name	Kind
    Tsukamurella sunchonensis Seong et al. 2008	heterotypic synonym, validly published under the ICNP

• Emendations:
  • Teng et al. 2016 Teng JL, Tang Y, Huang Y, Guo FB, Wei W, Chen JH, Wong SS, Lau SK, Woo PC. Phylogenomic Analyses and Reclassification of Species within the Genus Tsukamurella: Insights to Species Definition in the Post-genomic Era. Front Microbiol 2016; 7:1137. Oren A, Garrity GM. List of changes in taxonomic opinion no. 25. Notification of changes in taxonomic opinion previously published outside the IJSEM. Int J Syst Evol Microbiol 2017; 67:7-8.
    Notes:
    • 🫂 Emendation accompanied by a proposal regarding the synonymy of the species.

• Notes:
  • ⏰ According to Nouioui et al. (2018), this species is an earlier heterotypic synonym of Tsukamurella sunchonensis Seong et al. 2008. Publication: Nouioui I, Carro L, Garcia-Lopez M, Meier-Kolthoff JP, Woyke T, Kyrpides NC, Pukall R, Klenk HP, Goodfellow M, Goker M. Genome-Based Taxonomic Classification of the Phylum Actinobacteria. Front Microbiol 2018; 9:2007.
  • ⏰ According to Teng et al. (2016), this species is an earlier heterotypic synonym of Tsukamurella sunchonensis Seong et al. 2008. Publication: Teng JL, Tang Y, Huang Y, Guo FB, Wei W, Chen JH, Wong SS, Lau SK, Woo PC. Phylogenomic Analyses and Reclassification of Species within the Genus Tsukamurella: Insights to Species Definition in the Post-genomic Era. Front Microbiol 2016; 7:1137.
  • 🏢 Synonymy of this taxon was mentioned in an IJSEM list. Publication: Oren A, Garrity GM. List of changes in taxonomic opinion no. 29. Notification of changes in taxonomic opinion previously published outside the IJSEM. Int J Syst Evol Microbiol 2019; 69:13-32.
  • 🏢 Synonymy of this taxon was mentioned in an IJSEM list. Publication: Oren A, Garrity GM. List of changes in taxonomic opinion no. 25. Notification of changes in taxonomic opinion previously published outside the IJSEM. Int J Syst Evol Microbiol 2017; 67:7-8.
  • 😷 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 risk group of the genus.

Parent taxon: Tsukamurella Collins et al. 1988

Assigned by: Nam SW, Kim W, Chun J, Goodfellow M. Tsukamurella pseudospumae sp. nov., a novel actinomycete isolated from activated sludge foam. Int J Syst Evol Microbiol 2004; 54:1209-1212.

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Record number: 782891