Name: Bdellovibrio exovorus Koval et al. 2013

Category: Species

Proposed as: sp. nov.

Etymology: e.xo’vo.rus. Gr. prep. exô, outside; L. inf. v. vorare, to devour, to consume; N.L. masc. adj. suff. -vorus, eating; N.L. masc. adj. exovorus, eating outside, referring to the epibiotic life cycle

Pronunciation, gender: e-XO-wo-rus, masculine

Type strain: ATCC BAA-2330; DSM 25223; JSS

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: EF687743 Analyse FASTA

Valid publication: Koval SF, Hynes SH, Flannagan RS, Pasternak Z, Davidov Y, Jurkevitch E. Bdellovibrio exovorus sp. nov., a novel predator of Caulobacter crescentus. Int J Syst Evol Microbiol 2013; 63:146-151.

IJSEM list: Euzeby JP. Notification list. Notification that new names and new combinations have appeared in volume 63, part 1 of the IJSEM. Int J Syst Evol Microbiol 2013; 63:1211-1213.

Nomenclatural status: validly published under the ICNP

Taxonomic status: synonym

Correct name: Pseudobdellovibrio exovorus (Koval et al. 2013) Waite et al. 2020

Risk group: 1

• Synonyms:

  • Name	Kind
    Pseudobdellovibrio exovorus (Koval et al. 2013) Waite et al. 2020	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.
  • ❗ Bdellovibrio exovorus 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 Bdellovibrio.
  • 😷 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 7 times in PubMed until 2025-06-04.

Parent taxon: Bdellovibrio Stolp and Starr 1963 (Approved Lists 1980)

Assigned by: Koval SF, Hynes SH, Flannagan RS, Pasternak Z, Davidov Y, Jurkevitch E. Bdellovibrio exovorus sp. nov., a novel predator of Caulobacter crescentus. Int J Syst Evol Microbiol 2013; 63:146-151.

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Record number: 790416