Name: Williamsoniiplasma somnilux (Williamson et al. 1990) Gupta et al. 2019

Category: Species

Proposed as: comb. nov.

Basonym: Mycoplasma somnilux Williamson et al. 1990

Etymology: som’ni.lux. L. masc. n. somnus, sleep; L. fem. n. lux, light; N.L. fem. n. somnilux, intended to mean sleeping light, referring to the quiescent pupal stage of the host from which the organism was isolated, which precedes the luminescent adult stage (nominative in apposition)

Gender: neuter

Type strain: ATCC 49194; NCTC 11719; PYAN-1

Conduct genome-based taxonomy at

16S rRNA gene: AY157871 Analyse FASTA

Effective publication: Gupta RS, Son J, Oren A. A phylogenomic and molecular markers based taxonomic framework for members of the order Entomoplasmatales: proposal for an emended order Mycoplasmatales containing the family Spiroplasmataceae and emended family Mycoplasmataceae comprised of six genera. Antonie Van Leeuwenhoek 2019; 112:561-588.

IJSEM list: Oren A, Garrity GM. Validation list no. 188. List of new names and new combinations previously effectively, but not validly, published. Int J Syst Evol Microbiol 2019; 69:1844-1846.

Nomenclatural status: validly published under the ICNP

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

• Synonyms:

  • Name	Kind
    Entomoplasma somnilux (Williamson et al. 1990) Tully et al. 1993	homotypic synonym, validly published under the ICNP
    Mycoplasma somnilux Williamson et al. 1990	homotypic synonym, validly published under the ICNP

• Notes:
  • 🎓 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 genus.
  • 🧍 The genome of the type strain was sequenced as part of the GEBA (Genomic Encyclopedia of Bacteria and Archaea) project. Publication: Mukherjee S, Seshadri R, Varghese NJ, Eloe-Fadrosh EA, Meier-Kolthoff JP, Goker M, Coates RC, Hadjithomas M, Pavlopoulos GA, Paez-Espino D, et al. 1,003 reference genomes of bacterial and archaeal isolates expand coverage of the tree of life. Nat Biotechnol 2017; 35:676-683.

Parent taxon: Williamsoniiplasma Gupta et al. 2019

Assigned by: Gupta RS, Son J, Oren A. A phylogenomic and molecular markers based taxonomic framework for members of the order Entomoplasmatales: proposal for an emended order Mycoplasmatales containing the family Spiroplasmataceae and emended family Mycoplasmataceae comprised of six genera. Antonie Van Leeuwenhoek 2019; 112:561-588.

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Record number: 801383