Name: Cosenzaea myxofaciens (Cosenza and Podgwaite 1966) Giammanco et al. 2011

Category: Species

Proposed as: comb. nov.

Basonym: Proteus myxofaciens Cosenza and Podgwaite 1966 (Approved Lists 1980)

Etymology: my.xo.fa’ci.ens. L. pres. part. faciens, making; N.L. fem. part. adj. myxofaciens, slime-producing (bacteria)

Pronunciation, gender: my-xo-FA-ki-ens, feminine

Type strain: ATCC 19692; BCRC 12222; CCRC 12222; CCUG 18769; CIP 106872; DSM 4482; JCM 1670; LMG 7876; NCIMB 13273

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: DQ885259 Analyse FASTA

Valid publication: Giammanco GM, Grimont PA, Grimont F, Lefevre M, Giammanco G, Pignato S. Phylogenetic analysis of the genera Proteus, Morganella and Providencia by comparison of rpoB gene sequences of type and clinical strains suggests the reclassification of Proteus myxofaciens in a new genus, Cosenzaea gen. nov., as Cosenzaea myxofaciens comb. nov. Int J Syst Evol Microbiol 2011; 61:1638-1644.

IJSEM list: Euzeby JP. Notification list. Notification that new names and new combinations have appeared in volume 61, part 7 of the IJSEM. Int J Syst Evol Microbiol 2011; 61:2331-2332.

Nomenclatural status: validly published under the ICNP

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

Correct name: Proteus myxofaciens Cosenza and Podgwaite 1966 (Approved Lists 1980)

Risk group: 1

• Synonyms:

  • Name	Kind
    Proteus myxofaciens Cosenza and Podgwaite 1966 (Approved Lists 1980)	homotypic synonym, validly published under the ICNP

• Notes:
  • 🥇 Nomenclatural type of the genus Cosenzaea Giammanco et al. 2011. Publication: Giammanco GM, Grimont PA, Grimont F, Lefevre M, Giammanco G, Pignato S. Phylogenetic analysis of the genera Proteus, Morganella and Providencia by comparison of rpoB gene sequences of type and clinical strains suggests the reclassification of Proteus myxofaciens in a new genus, Cosenzaea gen. nov., as Cosenzaea myxofaciens comb. nov. Int J Syst Evol Microbiol 2011; 61:1638-1644.
  • ❗ Cosenzaea myxofaciens 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 Cosenzaea.
  • 😷 The risk group for Canada has been imported on 2024-02-27. The full classification is: risk group = 1, note = "Animal classification RG: 1 - Security sensitive biological agent: No - Terrestrial animal pathogen under Canadian Food Inspection Agency authority: No - Containment level: Containment Level 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 6 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: Cosenzaea Giammanco et al. 2011

Assigned by: Giammanco GM, Grimont PA, Grimont F, Lefevre M, Giammanco G, Pignato S. Phylogenetic analysis of the genera Proteus, Morganella and Providencia by comparison of rpoB gene sequences of type and clinical strains suggests the reclassification of Proteus myxofaciens in a new genus, Cosenzaea gen. nov., as Cosenzaea myxofaciens comb. nov. Int J Syst Evol Microbiol 2011; 61:1638-1644.

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Record number: 789320