Name: Lewinella nigricans (Lewin 1970) Sly et al. 1998

Category: Species

Proposed as: comb. nov.

Basonym: Herpetosiphon nigricans Lewin 1970 (Approved Lists 1980)

Etymology: ni’gri.cans. L. fem. part. adj. nigricans, blackening

Pronunciation, gender: NI-gri-kans, feminine

Type strain: ATCC 23147; DSM 23189; NBRC 102662; NCIMB 1420; SS-2

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: AB301615 Analyse FASTA

Valid publication: Sly LI, Taghavi M, Fegan M. Phylogenetic heterogeneity within the genus Herpetosiphon: transfer of the marine species Herpetosiphon cohaerens, Herpetosiphon nigricans and Herpetosiphon persicus to the genus Lewinella gen. nov. in the Flexibacter-Bacteroides-Cytophaga phylum. Int J Syst Bacteriol 1998; 48:731-737. 🇦🇺

IJSEM list: Anonymous. Notification list. Notification that new names and new combinations have appeared in volume 48, part 3 of the IJSB. Int J Syst Bacteriol 1998; 48:1085-1087.

Nomenclatural status: validly published under the ICNP

Taxonomic status: synonym (and not recommended for medical use)

Correct name: Flavilitoribacter nigricans (Lewin 1970) García-López et al. 2020

Risk group: 1

• Synonyms:

  • Name	Kind
    Herpetosiphon nigricans Lewin 1970 (Approved Lists 1980)	homotypic synonym, validly published under the ICNP
    Flavilitoribacter nigricans (Lewin 1970) García-López et al. 2020	homotypic synonym, validly published under the ICNP

• Emendations:
  • Khan et al. 2007 Khan ST, Fukunaga Y, Nakagawa Y, Harayama S. Emended descriptions of the genus Lewinella and of Lewinella cohaerens, Lewinella nigricans and Lewinella persica, and description of Lewinella lutea sp. nov. and Lewinella marina sp. nov. Int J Syst Evol Microbiol 2007; 57:2946-2951. 🇯🇵 Euzeby JP. Notification list. Notification that new names and new combinations have appeared in volume 57, part 12 of the IJSEM. Int J Syst Evol Microbiol 2008; 58:531-532.

• Notes:
  • ❗ Lewinella nigricans 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 Lewinella.
  • 😷 The risk group for Canada has been imported on 2024-02-27. The full classification is: risk group = 1, note = "Animal classification RG: 2 - Security sensitive biological agent: No - Terrestrial animal pathogen under Canadian Food Inspection Agency authority: No - Containment level: Containment Level 2". — 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 4 times in PubMed until 2025-06-04.
  • 🙅 This name is on the List of Recommended Names for bacteria of medical importance (LoRN) as a synonym of the name to be applied to this species. The name is on LoRN because of the recorded risk group of other species in the genus.
  • 🧍 The phylogenetic position of this species was determined in a genome-scale analysis by García-López et al. (2019). Publication: Garcia-Lopez M, Meier-Kolthoff JP, Tindall BJ, Gronow S, Woyke T, Kyrpides NC, Hahnke RL, Goker M. Analysis of 1,000 Type-Strain Genomes Improves Taxonomic Classification of Bacteroidetes. Front Microbiol 2019; 10:2083. 🇩🇪

Parent taxon: Lewinella Sly et al. 1998

Assigned by: Sly LI, Taghavi M, Fegan M. Phylogenetic heterogeneity within the genus Herpetosiphon: transfer of the marine species Herpetosiphon cohaerens, Herpetosiphon nigricans and Herpetosiphon persicus to the genus Lewinella gen. nov. in the Flexibacter-Bacteroides-Cytophaga phylum. Int J Syst Bacteriol 1998; 48:731-737. 🇦🇺

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Record number: 784157