Name: Haloferacaceae Gupta et al. 2015

Category: Family

Proposed as: fam. nov.

Etymology: Ha.lo.fe.ra.ca’ce.ae. N.L. neut. n. Haloferax, type genus of the family; L. fem. pl. n. suff. -aceae, ending to denote a family; N.L. fem. pl. n. Haloferacaceae, the family the nomenclatural type of which is the genus Haloferax

Pronunciation (Latin), gender: ha-lo-fe-ra-KA-ke-a͡e, feminine

Type genus: Haloferax Torreblanca et al. 1986

Valid publication: Gupta RS, Naushad S, Baker S. Phylogenomic analyses and molecular signatures for the class Halobacteria and its two major clades: a proposal for division of the class Halobacteria into an emended order Halobacteriales and two new orders, Haloferacales ord. nov. and Natrialbales ord. nov., containing the novel families Haloferacaceae fam. nov. and Natrialbaceae fam. nov. Int J Syst Evol Microbiol 2015; 65:1050-1069. 🇨🇦

IJSEM list: Oren A, Garrity GM. Notification list. Notification that new names and new combinations have appeared in volume 65, part 3 of the IJSEM. Int J Syst Evol Microbiol 2015; 65:1701-1702.

Nomenclatural status: validly published under the ICNP

Taxonomic status: correct name

• Synonyms:

  • Name	Kind
    Halorubraceae Gupta et al. 2016	heterotypic synonym, validly published under the ICNP

• Emendations:
  • Gupta et al. 2016 Gupta RS, Naushad S, Fabros R, Adeolu M. Erratum to: A phylogenomic reappraisal of family-level divisions within the class Halobacteria: proposal to divide the order Halobacteriales into the families Halobacteriaceae, Haloarculaceae fam. nov., and Halococcaceae fam. nov., and the order Haloferacales into the families, Haloferacaceae and Halorubraceae fam nov. Antonie Van Leeuwenhoek 2016; 109:1521-1523. 🇨🇦 Oren A, Garrity GM. List of changes in taxonomic opinion no. 25. Notification of changes in taxonomic opinion previously published outside the IJSEM. Int J Syst Evol Microbiol 2017; 67:7-8.
    Notes:
    • ⊕ Emendation accompanied by the inclusion of 7 genera in the family.

• Notes:
  • 🧕 Gupta et al. (2015) assigned this family to the order Haloferacales Gupta et al. 2015. Publication: Gupta RS, Naushad S, Baker S. Phylogenomic analyses and molecular signatures for the class Halobacteria and its two major clades: a proposal for division of the class Halobacteria into an emended order Halobacteriales and two new orders, Haloferacales ord. nov. and Natrialbales ord. nov., containing the novel families Haloferacaceae fam. nov. and Natrialbaceae fam. nov. Int J Syst Evol Microbiol 2015; 65:1050-1069. 🇨🇦
  • 🧕 Gupta et al. (2016) assigned this family to the order Haloferacales Gupta et al. 2015. Publication: Gupta RS, Naushad S, Fabros R, Adeolu M. Erratum to: A phylogenomic reappraisal of family-level divisions within the class Halobacteria: proposal to divide the order Halobacteriales into the families Halobacteriaceae, Haloarculaceae fam. nov., and Halococcaceae fam. nov., and the order Haloferacales into the families, Haloferacaceae and Halorubraceae fam nov. Antonie Van Leeuwenhoek 2016; 109:1521-1523. 🇨🇦
  • 🚃 The type genus of this family has alternatively been placed in the family Halobacteriaceae Gibbons 1974 (Approved Lists 1980). Publication: Garrity GM, Holt JG. The Road Map to the Manual. In: Boone DR, Castenholz RW, Garrity GM (eds), Bergey's Manual of Systematic Bacteriology, second edition, vol. 1 (The Archaea and the deeply branching and phototrophic Bacteria), Springer-Verlag, New York, 2001, p. 119-166. 🇺🇸
  • 🖹 Minimal standards for the description of new taxa in this group were published in 2024. Publication: Cui HL, Hou J, Amoozegar MA, Dyall-Smith ML, de la Haba RR, Minegishi H, Montalvo-Rodriguez R, Oren A, Sanchez-Porro C, Ventosa A, et al. Proposed minimal standards for description of new taxa of the class Halobacteria. Int J Syst Evol Microbiol 2024; 74:6290. 🇮🇱
  • 🧔 This taxon was discussed in a meeting of a Taxonomic Subcommittee of the ICSP. Publication: Oren A, Arahal DR, Ventosa A. International Committee on Systematics of Prokaryotes Subcommittee on the Taxonomy of Halobacteria and Subcommittee on the Taxonomy of Halomonadaceae. Minutes of the joint open meeting, 28 June 2022, Alicante, Spain. Int J Syst Evol Microbiol 2022; 72:5584. 🇮🇱
  • 🧔 This taxon was discussed in a meeting of a Taxonomic Subcommittee of the ICSP. Publication: Arahal DR, Oren A, Ventosa A. International Committee on Systematics of Prokaryotes Subcommittee on the taxonomy of Halobacteria and Subcommittee on the taxonomy of Halomonadaceae. Minutes of the joint open meeting, 11 July 2017, Valencia, Spain. Int J Syst Evol Microbiol 2017; 67:4279-4283. 🇮🇱
  • 🧔 This taxon was discussed in a meeting of a Taxonomic Subcommittee of the ICSP. Publication: Oren A, Ventosa A. International Committee on Systematics of Prokaryotes Subcommittee on the taxonomy of Halobacteriaceae and subcommittee on the taxonomy of Halomonadaceae. Minutes of the joint open meeting, 23 May 2016, San Juan, Puerto Rico. Int J Syst Evol Microbiol 2016; 66:4291-4295. 🇮🇱
  • 🧔 This taxon was discussed in a meeting of a Taxonomic Subcommittee of the ICSP. Publication: Oren A, Arahal DR, Ventosa A. International Committee on Systematics of Prokaryotes Subcommittee on the Taxonomy of Halobacteria and Subcommittee on the Taxonomy of Halomonadaceae: minutes of the joint open meeting, 25 November 2025, Oaxaca, Mexico. Int J Syst Evol Microbiol 2026; 76:7065. 🇮🇱
  • 💁 Taxonomists who have recently focused on this group are the corresponding authors of Cui et al. (2011), Ding et al. (2026), Burns et al. (2007), Oren et al. (2009), Tan et al. (2024). Editors in search of reviewers are advised to consider additional criteria such as whether a taxon is covered by one of the ICSP subcommittees.
  • 🧬 The phylogenomic assignment score of this taxon is 0.09067 (N = 1).
  • 🎰 The BRCs most frequently used for deposits in this group are: JCM: 149; CGMCC: 95; DSM: 55; CECT: 28; KCTC: 27; ATCC: 20; CIP: 18; VKM: 13; NCIMB: 13; NBRC: 12.

Subdivision:

Number of child taxa with a validly published and correct name: 25
Number of child taxa with a validly published name, including synonyms: 28
Total number of child taxa: 31

• Child taxa:

  • Name	Nomenclatural status	Taxonomic status
    Halalkaliarchaeum Sorokin et al. 2019	validly published under the ICNP	correct name
    Halalkalirubrum Zuo et al. 2022	validly published under the ICNP	correct name
    Halegenticoccus Liu et al. 2020	validly published under the ICNP	correct name
    Halobaculum Oren et al. 1995	validly published under the ICNP	correct name
    Halobellus Cui et al. 2011	validly published under the ICNP	correct name
    Halobium Mori et al. 2016	validly published under the ICNP	correct name
    "Candidatus Halobonum" Ugalde et al. 2013	not validly published	pro-correct name
    Haloferax Torreblanca et al. 1986	validly published under the ICNP	correct name
    Halogeometricum Montalvo-Rodríguez et al. 1998	validly published under the ICNP	correct name
    Halogranum Cui et al. 2010	validly published under the ICNP	correct name
    Halohasta Mou et al. 2013	validly published under the ICNP	correct name
    Halolamina Cui et al. 2011	validly published under the ICNP	correct name
    "Haloliberatus" Ni et al. 2026	not validly published	preferred name
    Halonotius Burns et al. 2010	validly published under the ICNP	correct name
    Halonovum Hwang et al. 2026	validly published under the ICNP	correct name
    Haloparvum Chen et al. 2016	validly published under the ICNP	correct name
    Halopelagius Cui et al. 2010	validly published under the ICNP	correct name
    Halopenitus Amoozegar et al. 2012	validly published under the ICNP	correct name
    Haloplanus Bardavid et al. 2007	validly published under the ICNP	correct name
    Haloprofundus Zhang et al. 2017	validly published under the ICNP	correct name
    Haloquadratum Burns et al. 2007	validly published under the ICNP	correct name
    Halorarum Tan et al. 2024	validly published under the ICNP	synonym
    Halorubrobacterium Kamekura and Dyall-Smith 1996	validly published under the ICNP, illegitimate name	synonym
    Halorubrum McGenity and Grant 1996	validly published under the ICNP	correct name
    Halosarcina Savage et al. 2008	validly published under the ICNP	synonym
    Halosubterraneus Ding et al. 2026	validly published under the ICNP	correct name
    Natronocalculus Sorokin et al. 2023	validly published under the ICNP	correct name
    Salinarubrum Cui and Qiu 2014	inaccurate spelling	misspelling
    Salinigranum Cui and Zhang 2014	validly published under the ICNP	correct name
    Salinirarus Zhang et al. 2025	validly published under the ICNP	correct name
    Salinirubrum corrig. Cui and Qiu 2014	validly published under the ICNP	correct name

Parent taxon: Halobacteriales Grant and Larsen 1989

Assigned by: Sorokin DY, Yakimov M, Messina E, Merkel AY, Koenen M, Bale NJ, Sinninghe Damste JS. Natranaeroarchaeum sulfidigenes gen. nov., sp. nov., carbohydrate-utilizing sulfur-respiring haloarchaeon from hypersaline soda lakes, a member of a new family Natronoarchaeaceae fam. nov. in the order Halobacteriales. Syst Appl Microbiol 2022; 45:126356. 🇷🇺

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Record number: 1998