Name: Arachnia Pine and Georg 1969 (Approved Lists 1980)

Category: Genus

Proposed as: gen. nov.

Etymology: A.rach’ni.a. Gr. neut. n. arachnion, spider's web; N.L. fem. n. Arachnia, referring to filamentous microcolonies

Gender, pronunciation: feminine (stem: Arachni-), a-RAK^H-ni-a

Type species: Arachnia propionica (Buchanan and Pine 1962) Pine and Georg 1969 (Approved Lists 1980)

Conduct genome-based taxonomy of genus at TYGS

16S rRNA gene: Analyse FASTA

Effective publication: Pine L, Georg LK. Reclassification of Actinomyces propionicus. International Journal of Systematic Bacteriology 1969; 19:267-272.

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

Taxonomic status: correct name

• Synonyms:

  • Name	Kind
    Pseudopropionibacterium Scholz and Kilian 2016	homotypic synonym, validly published under the ICNP, illegitimate name

• Emendations:
  • Tindall 2019 Tindall BJ. Arachnia propionica (Buchanan and Pine 1962) Pine and Georg 1969 (Approved Lists 1980), Propionibacterium propionicum corrig. (Buchanan and Pine 1962) Charfreitag et al. 1988 and Pseudopropionibacterium propionicum (Buchanan and Pine 1962) Scholz and Kilian 2016 and the nomenclatural consequences of changes in the taxonomy of the genus Propionibacterium. Int J Syst Evol Microbiol 2019; 69:2612-2615. 🇩🇪 Oren A, Garrity GM. Notification list. Notification that new names and new combinations have appeared in volume 69, part 8 of the IJSEM. Int J Syst Evol Microbiol 2019; 69:3315-3317.
    Notes:
    • ⊕ Emendation accompanied by the proposal of 1 new species in the genus.

• Notes:
  • 🧕 Goodfellow and Williams (1983) assigned this genus to the uncategorized "Actinobacteria" Goodfellow and Williams 1983. Publication: Goodfellow M, Williams ST. Ecology of actinomycetes. Annu Rev Microbiol 1983; 37:189-216.
  • 🚋 The type species of this genus has alternatively been placed in the genus Actinomyces Harz 1877 (Approved Lists 1980). Publication: Buchanan BB, Pine L. Characterization of a propionic acid producing actinomycete, Actinomyces propionicus, sp. nov. J Gen Microbiol 1962; 28:305-323.
  • 🚋 The type species of this genus has alternatively been placed in the genus Propionibacterium Orla-Jensen 1909 (Approved Lists 1980). Publication: Charfreitag O, Collins MD, Stackebrandt E. Reclassification of Arachnia propionica as Propionibacterium propionicus comb. nov. Int. J. Syst. Bacteriol. 1988; 38:354-357. 🇩🇪
  • 🚋 The type species of this genus has alternatively been placed in the genus Pseudopropionibacterium Scholz and Kilian 2016. Publication: Scholz CF, Kilian M. The natural history of cutaneous propionibacteria, and reclassification of selected species within the genus Propionibacterium to the proposed novel genera Acidipropionibacterium gen. nov., Cutibacterium gen. nov. and Pseudopropionibacterium gen. nov. Int J Syst Evol Microbiol 2016; 66:4422-4432. 🇩🇰
  • 🙄 This taxon name is occasionally misprinted (or affected by an OCR error) in some sources as: "Araclinia"; "Araclmia"; "Aruchnia".
  • 🎰 The BRCs most frequently used for deposits in this group are: DSM: 2; JCM: 2; VKM: 1; IFO: 1; CIP: 1; ATCC: 1; NCTC: 1; NBRC: 1; CCUG: 1.
  • 🧍 Arachnia Pine and Georg 1969 (Approved Lists 1980) is a later homonym of a genus name with standing in the zoological (animal) nomenclature: Arachnia Wheeler, 1903. Principle 2 of the 2008 Code is not retroactive, so the name does not contravene the Code because of this homonymy. — Crook M. Personal communication, 2021-08-19.
  • 🧍 Pittman et al. (1991) suggested the abbreviation "ARAC" 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.

Subdivision:

Number of child taxa with a validly published and correct name: 2
Number of child taxa with a validly published name, including synonyms: 2
Total number of child taxa: 2

• Child taxa:

  • Name	Nomenclatural status	Taxonomic status
    Arachnia propionica (Buchanan and Pine 1962) Pine and Georg 1969 (Approved Lists 1980)	validly published under the ICNP	correct name
    Arachnia rubra (Saito et al. 2018) Tindall 2019	validly published under the ICNP	correct name

Parent taxon: Propionibacteriaceae Delwiche 1957 (Approved Lists 1980)

Assigned by: Scholz CF, Kilian M. The natural history of cutaneous propionibacteria, and reclassification of selected species within the genus Propionibacterium to the proposed novel genera Acidipropionibacterium gen. nov., Cutibacterium gen. nov. and Pseudopropionibacterium gen. nov. Int J Syst Evol Microbiol 2016; 66:4422-4432. 🇩🇰

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Record number: 515163