Notification of changes in taxonomic opinion previously published outside the IJSEM. List of changes in taxonomic opinion no. 40

The International Code of Nomenclature of Prokaryotes (ICNP) [1] deals with the nomenclature of prokaryotes. This may include existing names (the Approved Lists of Bacterial Names) as well as new names and new combinations. In this sense, the Code is also dealing indirectly with taxonomic opinions. However, as with most codes of nomenclature, there are no mechanisms for formally recording taxonomic opinions that do not involve the creation of new names or new combinations. In particular, it would be desirable for taxonomic opinions resulting from the creation of synonyms or emended descriptions to be made widely available to the public. In 2004, the Editorial Board of the International Journal of Systematic and Evolutionary Microbiology (IJSEM) agreed unanimously that it was desirable to cover such changes in taxonomic opinions (i.e. the creation of synonyms or the emendation of circumscriptions) previously published outside the IJSEM, and to introduce a List of Changes in Taxonomic Opinion [2]. Scientists wishing to have changes in taxonomic opinion included in future lists should send a PDF file of the relevant publication to the IJSEM Editorial Office or to the List Editors.

It must be stressed that the date of proposed taxonomic changes is the date of the original publication, not the date of publication of the list. Taxonomic opinions included in the List of Changes in Taxonomic Opinion do not affect the status of a name under the ICNP [2] and can neither by considered as approved nor as disapproved by the International Committee on Systematics of Prokaryotes. The names that are to be used are those that are the ‘correct names’ (in the sense of Principle 6 of the ICNP) in the opinion of the microbiologist, with a given circumscription, position and rank. A particular name, circumscription, position and rank does not have to be adopted in all circumstances. Consequently, the List of Changes in Taxonomic Opinion must be considered as a service to microbiology and it has no ‘official character’, other than providing a centralized point for registering/indexing such changes in a way that makes them easily accessible to the scientific community.

The List Editors reserve the right not to include in the list proposed emendations that are in our opinion unimportant and do not significantly alter the original description of the taxon. This includes addition of new members to the taxon, reclassification of members in a different taxon, addition of genome sequence data, and other changes that marginally change the taxon circumscription [3]. Conversely, the mere inclusion of an emendation in a List of Changes in Taxonomic Opinion does not indicate that the List Editors regard this emendation as taxonomically relevant.

Name/authors	Proposed as	Reference
Aedoeadaptatus Hitch et al. 2022 emend. Malhotra et al. 2024, 13*	emend.	[4]
Chromohalobacter salexigens Arahal et al. 2001 pro synon. Chromohalobacter israelensis (Huval et al. 1996) Arahal et al. 2001	synon.	[5]
Cobetia amphilecti Romanenko et al. 2013 emend. Nedashkovskaya et al. 2024, 13*	emend.	[6]
Cobetia litoralis Romanenko et al. 2013 pro synon. Cobetia amphilecti Romanenko et al. 2013	synon.	[6]
Cobetia marina (Cobet et al. 1970) Arahal et al. 2002 emend. Nedashkovskaya et al. 2024, 13*	emend.	[6]
Cobetia pacifica Romanenko et al. 2013 pro synon. Cobetia marina (Cobet et al. 1970) Arahal et al. 2002	synon.	[6]
Corynebacteriineae corrig. Stackebrandt et al. 1997 emend. Val-Calvo and Vázquez-Boland 2023, 16*	emend.	[7]
Curtobacterium albidum (Komagata and Iizuka 1964) Yamada and Komagata 1972 (Approved Lists 1980) pro synon. Curtobacterium citreum (Komagata and Iizuka 1964) Yamada and Komagata 1972 (Approved Lists 1980)	synon.	[8]
Curtobacterium citreum (Komagata and Iizuka 1964) Yamada and Komagata 1972 (Approved Lists 1980) emend. Osdaghi et al. 2024, 10*	emend.	[8]
Curtobacterium flaccumfaciens (Hedges 1922) Collins and Jones 1984 emend. Osdaghi et al. 2024, 10*	emend.	[8]
Fusobacterium equinum Dorsch et al. 2001 pro synon. Fusobacterium gonidiaformans (Tunnicliff and Jackson 1925) Moore and Holdeman 1970 (Approved Lists 1980)	synon.	[9]
Fusobacterium necrophorum subsp. funduliforme (ex Hallé 1898) Shinjo et al. 1991 pro synon. Fusobacterium necrophorum subsp. necrophorum (Flügge 1886) Shinjo et al. 1991	synon.	[9]
Haloarcula Torreblanca et al. 1986 emend. Ma et al. 2024, 8*	emend.	[10]
Halobellus ramosii Pérez-Davó et al. 2015 pro synon. Halobellus inordinatus Qiu et al. 2013	synon.	[11]
Haloferax alexandrinus Asker and Ohta 2002 pro synon. Haloferax volcanii (Mullakhanbhai and Larsen 1975) Torreblanca et al. 1986‡	synon.	[11]
Haloferax lucentense corrig. Gutierrez et al. 2004 pro synon. Haloferax volcanii (Mullakhanbhai and Larsen 1975) Torreblanca et al. 1986	synon.	[11]
Halogranum salarium Kim et al. 2012 pro synon. Halogranum rubrum Cui et al. 2010	synon.	[11]
Halomonas alkaliantarctica Poli et al. 2011 pro synon. Halomonas neptunia Kaye et al. 2004	synon.	[5]
Halomonas axialensis Kaye et al. 2004 pro synon. Halomonas aquamarina (ZoBell and Upham 1944) Dobson and Franzmann 1996	synon.	[5]
Halomonas hydrothermalis Kaye et al. 2004 pro synon. Halomonas venusta (Baumann et al. 1972) Dobson and Franzmann 1996	synon.	[5]
Halomonas johnsoniae Kim et al. 2010 pro synon. Halomonas hamiltonii Kim et al. 2010	synon.	[5]
Halomonas meridiana James et al. 1990 pro synon. Halomonas aquamarina (ZoBell and Upham 1944) Dobson and Franzmann 1996	synon.	[5]
Halomonas salina (Valderrama et al. 1991) Dobson and Franzmann 1996 pro synon. Halomonas halophila (Quesada et al. 1984) Dobson and Franzmann 1996	synon.	[5]
Haloplanus rallus Cho et al. 2018 pro synon. Haloplanus salinarum Hwang et al. 2017	synon.	[9]
Halosegnis longus Durán-Viseras et al. 2022 emend. Hu et al. 2024, 8*	emend.	[12]
Jatrophihabitans Madhaiyan et al. 2013 emend. Suh et al. 2024, 6*	emend.	[13]
Litoribacter alkaliphilus Subhash et al. 2013 pro synon. Litoribacter ruber Tian et al. 2010	synon.	[14]
Microbacterium ketosireducens Takeuchi and Hatano 1998 pro synon. Microbacterium terrae (Yokota et al. 1993) Takeuchi and Hatano 1998II	synon.	[15]
Microbacterium kitamiense Matsuyama et al. 1999 pro synon. Microbacterium aurantiacum Takeuchi and Hatano 1998II	synon.	[15]
Microbacterium maritypicum corrig. (ZoBell and Upham 1944) Takeuchi and Hatano 1998II pro synon. Microbacterium liquefaciens (Collins et al. 1983 ex Orla-Jensen 1919) Takeuchi and Hatano 1998II	synon.	[15]
Modicisalibacter Ben Ali Gam et al. 2007 emend. de la Haba et al. 2023, 24	emend.	[5]
Mycobacterium Lehmann and Neumann 1896 (Approved Lists 1980) emend. Val-Calvo and Vázquez-Boland 2023, 16*	emend.	[7]
Mycobacteroides Gupta et al. 2018 emend. Val-Calvo and Vázquez-Boland 2023, 16*	emend.	[7]
Paraglaciecola agarilytica (Yong et al. 2007) Shivaji and Reddy 2014 emend. Emsley et al. 2024, 13*	emend.	[16]
Paraglaciecola oceanifecundans Shivaji and Reddy 2014 pro synon. Paraglaciecola agarilytica (Yong et al. 2007) Shivaji and Reddy 2014	synon.	[16]
Peptoniphilus porci Wylensek et al. 2021 pro synon. Peptoniphilus faecalis Ryu et al. 2021	synon.	[4]
Pseudomonas alcaligenes Monias 1928 (Approved Lists 1980) emend. Ling et al. 2023, 562#	emend.	[17]
Rhodococcus Zopf 1891 (Approved Lists 1980) emend. Val-Calvo and Vázquez-Boland 2023, 16*	emend.	[7]
Sciscionella Tian et al. 2009 emend. Teo et al. 2024, 6*	emend.	[18]
Staphylococcus delphini Varaldo et al. 1988 emend. Vrbovska et al. 2020, 13*	emend.	[19]
Streptomyces demainii Goodfellow et al. 2008 pro synon. Streptomyces hygroscopicus (Jensen 1931) Yüntsen et al. 1956 (Approved Lists 1980)	synon.	[20]
Streptomyces nashvillensis McVeigh and Reyes 1961 (Approved Lists 1980) pro synon. Streptomyces tanashiensis Hata et al. 1952 (Approved Lists 1980)	synon.	[21]
Streptomyces sporocinereus (ex Krassilnikov 1970) Preobrazhenskaya 1986 pro synon. Streptomyces hygroscopicus (Jensen 1931) Yüntsen et al. 1956 (Approved Lists 1980)	synon.	[20]
Streptomyces tanashiensis Hata et al. 1952 (Approved Lists 1980) emend. Ates et al. 2023, 1085	emend.	[21]
Thiorhodovibrio Overmann et al. 1993 emend. Methner et al. 2023, 16*	emend.	[22]
Thiorhodovibrio winogradskyi Overmann et al. 1993 emend. Methner et al. 2023, 16*	emend.	[22]

* The journal in which the name was effective published does not have continuous pages.

‡ alexandrinus (or grammatically correct alexandrinum) was misspelled alexandrines.

II This species is classified as Risk Group 2.

# The authors stated “Emended description of the strain Pseudomonas alcaligenes ATCC 14909T” instead of “Emended description of Pseudomonas alcaligenes Monias 1928 (Approved Lists 1980)”.

For references to Lists of Changes in Taxonomic Opinion no. 1–39 see Int J Syst Evol Microbiol 55 (2005) 7, 1403; 56 (2006) 11, 1463; 57 (2007) 4, 1376; 58 (2008) 5, 1515; 59 (2009) 5, 1559; 60 (2010) 5, 1482; 61 (2011) 4, 1504; 62 (2012) 7, 1448; 63 (2013), 8, 2371, 64 (2014), 8, 2191; 65 (2015), 7, 2028; 66 (2016), 7, 2469; 67 (2017), 7, 2081; 68 (2018), 7, 2137; 69 (2019), 13, 1850; 70 (2020), 9, 4061; 71 (2021), 004596, 004816; 72 (2022), 005164, 005413; 73 (2023), 005696, 005923; 74 (2024), 006145.