Name: Microcyclus Ørskov 1928 (Approved Lists 1980)

Category: Genus

Proposed as: gen. nov.

Etymology: Mi.cro.cy.clus. Gr. masc. adj. mikros, small (may keep -o); L. masc. n. cyclus, a circle; N.L. masc. n. Microcyclus, a small circle

Gender: masculine (stem: Microcycl-)

Type species: Microcyclus aquaticus Ørskov 1928 (Approved Lists 1980)

Effective publication: Oerskov J. Beschreibung eines neuen Mikroben, Microcyclus aquaticus, mit eigentümlicher Morphologie. Zentralblatt fur Bakteriologie, Parasitenkunde, Infektionskrankheiten und Hygiene. Abteilung I. 1928; 107:180-184.

IJSEM list: Skerman VBD, McGowan V, Sneath PHA. Approved lists of bacterial names. Int J Syst Bacteriol 1980; 30:225-420.

Nomenclatural status: validly published under the ICNP, illegitimate name

Taxonomic status: synonym

Correct name: Ancylobacter Raj 1983

• Synonyms:

  • Name	Kind
    Ancylobacter Raj 1983	homotypic synonym, validly published under the ICNP
    Methylorhabdus Doronina et al. 1996	heterotypic synonym, validly published under the ICNP
    Angulomicrobium Vasil'eva et al. 1986	heterotypic synonym, validly published under the ICNP
    Starkeya Kelly et al. 2000	heterotypic synonym, validly published under the ICNP

• Notes:
  • 🧕 Breed et al. (1957) assigned this genus to the family Spirillaceae Migula 1894 (Approved Lists 1980). Publication: Parker CD. Genus V. Thiobacillus Beijerinck 1904. In: Breed RS, Murray EGD, Smith NR (eds), Bergey's Manual of Determinative Bacteriology, 7th edition, The Williams & Wilkins Co, Baltimore, 1957, p. 83-88.
  • 🚂 For the type species of this genus another name is in use, which is affiliated with the genus Ancylobacter Raj 1983. Publication: Raj HD. Proposal of Ancylobacter gen. nov. as a substitute for the bacterial genus Microcyclus Ørskov 1928. Int. J. Syst. Bacteriol. 1983; 33:397-398.
  • 🙄 This taxon name is occasionally misprinted (or affected by an OCR error) in some sources as: "Iicrocyclus"; "Mcrocyclus"; "Microcvclus"; "Microcycfus"; "Microcycius"; "Microevclus"; "Microeyclus"; "Mzcrocyclus".
  • 🎰 The BRCs most frequently used for deposits in this group are: DSM: 3; ATCC: 3; CCUG: 2; VKM: 2; NBRC: 1; JCM: 1.
  • 🧍 According to Shipunov (2011), this name is a hemihomonym. Publication: Shipunov A. The problem of hemihomonyms and the on-line hemihomonyms database (HHDB). Bionomina 2011; 4:65-72.
  • 🧍 Later homonym of the fungal genus Microcyclus Saccardo 1904. Publication: Raj HD. Proposal of Ancylobacter gen. nov. as a substitute for the bacterial genus Microcyclus Ørskov 1928. Int. J. Syst. Bacteriol. 1983; 33:397-398.
  • 🧍 Pittman et al. (1991) suggested the abbreviation "MICY" for this genus name but this does not appear to be of practical relevance any longer. Publication: Pittman KF, Walczak CA, Lock CM. Codes and abbreviations for approved of effectively published names of genera of bacteria published from January 1980 to December 1990. Int J Syst Bacteriol 1991; 41:571-579.
  • 🧍 Microcyclus is illegitimate because of precedence of the fungal genus Microcyclus Saccardo 1904 [Rule 51b (4)]. Publication: Raj HD. Proposal of Ancylobacter gen. nov. as a substitute for the bacterial genus Microcyclus Ørskov 1928. Int. J. Syst. Bacteriol. 1983; 33:397-398.

Subdivision:

Number of child taxa with a validly published and correct name: 0
Number of child taxa with a validly published name, including synonyms: 1
Total number of child taxa: 3

• Child taxa:

  • Name	Nomenclatural status	Taxonomic status
    Microcyclus aquaticus Ørskov 1928 (Approved Lists 1980)	validly published under the ICNP, illegitimate name	synonym
    "Microcyclus major" Gromov 1963	not validly published, basonym of name in Approved Lists	synonym (and no standing)
    "Microcyclus marinus" Raj 1976	not validly published, basonym of name in Approved Lists	synonym (and no standing)

Parent taxon: Xanthobacteraceae Lee et al. 2005

Assigned by: Hordt A, Lopez MG, Meier-Kolthoff JP, Schleuning M, Weinhold LM, Tindall BJ, Gronow S, Kyrpides NC, Woyke T, Goker M. Analysis of 1,000+ Type-Strain Genomes Substantially Improves Taxonomic Classification of Alphaproteobacteria. Front Microbiol 2020; 11:468.

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Record number: 516086