Name: Borreliella californiensis (Margos et al. 2016) Gupta 2020

Category: Species

Proposed as: comb. nov.

Basonym: Borrelia californiensis Margos et al. 2016

Etymology: ca.li.for.ni.en’sis. N.L. masc./fem. adj. californiensis, belonging to California, from where the type strain was isolated

Gender: feminine

Type strain: ATCC BAA-2689; CA446; DSM 17989

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: AJ224130 Analyse FASTA

Effective publication: Gupta RS. Distinction between Borrelia and Borreliella is more robustly supported by molecular and phenotypic characteristics than all other neighbouring prokaryotic genera: Response to Margos' et al. "The genus Borrelia reloaded" (PLoS ONE 13(12): e0208432). PLoS One 2019; 14:e0221397.

IJSEM list: Oren A, Garrity GM. Validation list no. 191. List of new names and new combinations previously effectively, but not validly, published. Int J Syst Evol Microbiol 2020; 70:1-5.

Nomenclatural status: validly published under the ICNP

Taxonomic status: synonym

Correct name: Borrelia californiensis Margos et al. 2016

• Synonyms:

  • Name	Kind
    Borrelia californiensis Margos et al. 2016	homotypic synonym, validly published under the ICNP

• Notes:
  • 😢 The terminology used by the authors is in line with many other taxonomic studies and does not negatively affect their main results; some improvements may nevertheless be possible. Using the term "phylogenetic data" (or equivalent) for sequence data is not advocated. Whether taxa can have "members" is debatable. See the LPSN phylogeny page for details. Publication: Göker M. What can genome analysis offer for bacteria? In: Bridge P, Smith D, Stackebrandt E (eds), Trends in the systematics of bacteria and fungi, CAB International, Wallingford, 2021, p. 255-281.
  • ❗ Borreliella californiensis 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 Borreliella.
  • 🎓 Name mentioned 0 times in PubMed until 2024-03-28.

Parent taxon: Borreliella Adeolu and Gupta 2015

Assigned by: Gupta RS. Distinction between Borrelia and Borreliella is more robustly supported by molecular and phenotypic characteristics than all other neighbouring prokaryotic genera: Response to Margos' et al. "The genus Borrelia reloaded" (PLoS ONE 13(12): e0208432). PLoS One 2019; 14:e0221397.

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Record number: 5988