Name: Pseudolactococcus raffinolactis (Orla-Jensen and Hansen 1932) Abe et al. 2025

Category: Species

Proposed as: comb. nov.

Basonym: Streptococcus raffinolactis Orla-Jensen and Hansen 1932 (Approved Lists 1980)

Etymology: raf.fi.no.lac’tis. N.L. neut. n. raffinosum, raffinose; L. neut. n. lac, milk; N.L. gen. neut. n. raffinolactis, raffinose fermenting bacterium from milk

Pronunciation, gender: raf-fi-no-LAK-tis, masculine

Type strain: ATCC 43920; CCUG 32209; CECT 988; CIP 102300; DSM 20443; HAMBI 1589; JCM 5706; KACC 13441; LMG 13095; NBIMCC 9088; NBRC 100932; NCDO 617; NCFB 617; NCIMB 13197

Conduct genome-based taxonomy at

16S rRNA gene: AB681294 Analyse FASTA

Valid publication: Abe K, Yuki M, Imagawa Y, Hisatomi A, Ohkuma M, Sakamoto M, Noda S. Genome-based reclassification of the genus Lactococcus and two novel species Pseudolactococcus yaeyamensis gen. nov., sp. nov. and Lactovum odontotermitis sp. nov. isolated from the gut of termites. Int J Syst Evol Microbiol 2025; 75:6803.

IJSEM list: Oren A, Göker M. Notification list. Notification that new names and new combinations have appeared in volume 75, part 6 of the IJSEM. Int J Syst Evol Microbiol 2025; 75:6862.

Nomenclatural status: validly published under the ICNP

Taxonomic status: orphaned species (and explicitly recommended for medical use)

• Synonyms:

  • Name	Kind
    Lactococcus raffinolactis (Orla-Jensen and Hansen 1932) Schleifer et al. 1988	homotypic synonym, validly published under the ICNP
    Streptococcus raffinolactis Orla-Jensen and Hansen 1932 (Approved Lists 1980)	homotypic synonym, validly published under the ICNP

• Notes:
  • ❗ Pseudolactococcus raffinolactis 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 Pseudolactococcus.
  • 🎓 Name mentioned 0 times in PubMed until 2025-06-10.
  • 🙆 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.

Parent taxon: Pseudolactococcus Abe et al. 2025

Assigned by: Abe K, Yuki M, Imagawa Y, Hisatomi A, Ohkuma M, Sakamoto M, Noda S. Genome-based reclassification of the genus Lactococcus and two novel species Pseudolactococcus yaeyamensis gen. nov., sp. nov. and Lactovum odontotermitis sp. nov. isolated from the gut of termites. Int J Syst Evol Microbiol 2025; 75:6803.

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Record number: 65874