Name: Mesomycoplasma dispar (Gourlay and Leach 1970) Gupta et al. 2019

Category: Species

Proposed as: comb. nov.

Basonym: Mycoplasma dispar Gourlay and Leach 1970 (Approved Lists 1980)

Etymology: dis’par. L. neut. adj. dispar, dissimilar, different

Pronunciation, gender: DIS-par, neuter

Type strain: 462/2; ATCC 27140; DSM 19993; NCTC 10125

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: AF412979 Analyse FASTA

Effective publication: Gupta RS, Sawnani S, Adeolu M, Alnajar S, Oren A. Correction to: Phylogenetic framework for the phylum Tenericutes based on genome sequence data: proposal for the creation of a new order Mycoplasmoidales ord. nov., containing two new families Mycoplasmoidaceae fam. nov. and Metamycoplasmataceae fam. nov. harbouring Eperythrozoon, Ureaplasma and five novel genera. Antonie Van Leeuwenhoek 2018; 111:2485-2486.

IJSEM list: Oren A, Garrity GM. Validation list no. 186. List of new names and new combinations previously effectively, but not validly, published. Int J Syst Evol Microbiol 2019; 69:597-599.

Nomenclatural status: validly published under the ICNP

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

• Synonyms:

  • Name	Kind
    "Mesomycoplasma dispar" (Gourlay and Leach 1970) Gupta et al. 2018	homotypic synonym, not validly published
    Mycoplasma dispar Gourlay and Leach 1970 (Approved Lists 1980)	homotypic synonym, validly published under the ICNP

• Notes:
  • 😷 The taxon name shown here has no risk group assigned, but is the homotypic synonym of Mycoplasma dispar Gourlay and Leach 1970 (Approved Lists 1980), which has a risk group (Swiss Confederation) above 1. This may require that the name shown here is not treated as the correct name for practical purposes. — The taxon name shown here has no risk group assigned, but is the homotypic synonym of Mycoplasma dispar Gourlay and Leach 1970 (Approved Lists 1980), which has a risk group (Germany) above 1. This may require that the name shown here is not treated as the correct name for practical purposes.
  • 🎓 Name mentioned 0 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 species itself. This name is not taxonomically suspended any more in favour of Mycoplasma dispar Gourlay and Leach 1970 (Approved Lists 1980). Publication: Gourlay RN, Leach RH. A new mycoplasma species isolated from pneumonic lungs of calves (Mycoplasma dispar sp. nov.). J Med Microbiol 1970; 3:111-123. Skerman VBD, McGowan V, Sneath PHA. Approved lists of bacterial names. Int J Syst Bacteriol 1980; 30:225-420.

Parent taxon: Mesomycoplasma Gupta et al. 2018

Assigned by: Gupta RS, Sawnani S, Adeolu M, Alnajar S, Oren A. Correction to: Phylogenetic framework for the phylum Tenericutes based on genome sequence data: proposal for the creation of a new order Mycoplasmoidales ord. nov., containing two new families Mycoplasmoidaceae fam. nov. and Metamycoplasmataceae fam. nov. harbouring Eperythrozoon, Ureaplasma and five novel genera. Antonie Van Leeuwenhoek 2018; 111:2485-2486.

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Record number: 800275