Name: Excellospora viridilutea Agre and Guzeva 1975 (Approved Lists 1980)

Category: Species

Proposed as: sp. nov.

Etymology: vi.ri.di.lu’te.a. L. fem. adj. lutea, yellow; N.L. fem. adj. viridilutea, green-yellow

Pronunciation (Latin), gender: … wi-ri-di-LU-te-a, feminine

Type strain: ATCC 33925; BCRC 13638; CCRC 13638; DSM 44433; IFO 14480; IMET 9742; INMI 187; JCM 3398; JCM 7346; NBRC 14480

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: D86943 Analyse FASTA

Effective publication: Agre NS, Guzeva LN. New actinomycete genus: Excellospora gen. nov. Mikrobiologiya 1975; 44:459-463.

IJSEM list: Skerman VBD, McGowan V, Sneath PHA. Approved lists of bacterial names. Int J Syst Bacteriol 1980; 30:225-420.

Nomenclatural status: validly published under the ICNP

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

Correct name: Actinomadura viridilutea (Agre and Guzeva 1975) Zhang et al. 2001

Risk group: 1

• Synonyms:

  • Name	Kind
    Actinomadura viridilutea (Agre and Guzeva 1975) Zhang et al. 2001	homotypic synonym, validly published under the ICNP
    Actinomadura rubrobrunea (ex Krassilnikov et al. 1968) Kroppenstedt et al. 1991	heterotypic synonym, validly published under the ICNP
    "Micropolyspora rubrobrunea" Krassilnikov et al. 1968	heterotypic synonym, not validly published
    "Excellospora rubrobrunea" (Krassilnikov et al. 1968) Agre and Guzeva 1975	heterotypic synonym, not validly published

• Notes:
  • 🥇 Nomenclatural type of the genus Excellospora Agre and Guzeva 1975 (Approved Lists 1980). Publication: Agre NS, Guzeva LN. New actinomycete genus: Excellospora gen. nov. Mikrobiologiya 1975; 44:459-463.
  • ⏰ According to Nouioui et al. (2018), this species is an earlier heterotypic synonym of "Micropolyspora rubrobrunea" Krassilnikov et al. 1968. 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 Nouioui et al. (2018), this species is an earlier heterotypic synonym of "Excellospora rubrobrunea" (Krassilnikov et al. 1968) Agre and Guzeva 1975. 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 Nouioui et al. (2018), this species is an earlier heterotypic synonym of Actinomadura rubrobrunea (ex Krassilnikov et al. 1968) Kroppenstedt et al. 1991. 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. 🇩🇪
  • 🏢 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.
  • ❗ Excellospora viridilutea 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 Excellospora.
  • 😷 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. — 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 2 times in PubMed until 2025-06-04.
  • 🙅 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 risk group of the genus.

Parent taxon: Excellospora Agre and Guzeva 1975 (Approved Lists 1980)

Assigned by: Agre NS, Guzeva LN. New actinomycete genus: Excellospora gen. nov. Mikrobiologiya 1975; 44:459-463.

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Record number: 776133