This is a list of

taxa In biology, a taxon (back-formation from ''taxonomy''; plural taxa) is a group of one or more populations of an organism or organisms seen by taxonomists to form a unit. Although neither is required, a taxon is usually known by a particular nam ...

with ''

Candidatus In prokaryote nomenclature, ''Candidatus'' (Latin for candidate of Roman office) is used to name prokaryotic phyla that are well characterized but yet-uncultured. Contemporary sequencing approaches, such as 16S sequencing or metagenomics, provide m ...

'' status. For taxa not covered by this list, see also: * the

GenBank The GenBank sequence database is an open access, annotated collection of all publicly available nucleotide sequences and their protein translations. It is produced and maintained by the National Center for Biotechnology Information (NCBI; a part ...

taxonomy for "effective" names as published; * the ''Candidatus Lists'' and

LPSN List of Prokaryotic names with Standing in Nomenclature (LPSN) is an online database that maintains information on the naming and taxonomy of prokaryotes, following the taxonomy requirements and rulings of the International Code of Nomenclature ...

for latinate names, some sanitized to match the Code.

Phyla

* "''Ca.'' Absconditabacteria" (previously Candidate phylum SR1) * ABY1 aka OD1-ABY1, subgroup of OD1 ("''Ca.'' Parcubacteria")Kenly A. Hiller, Kenneth H. Foreman, David Weisman, Jennifer L. Bowen: Permeable Reactive Barriers Designed To Mitigate Eutrophication Alter Bacterial Community Composition and Aquifer Redox Conditions. In: Appl Environ Microbiol v.81(20); 2015 Oct; pp.7114–7124. doi:10.1128/AEM.01986-15. . . * Candidate phylum AC1 * "''Ca.'' Acetothermia" (previously

Candidate phylum OP1 A candidate, or nominee, is the prospective recipient of an award or honor, or a person seeking or being considered for some kind of position; for example: * to be elected to an office — in this case a candidate selection procedure occurs. * t ...

) * "''Ca.'' Aerophobetes" (previously Candidate phylum CD12 or BHI80-139) * "''Ca.'' Aminicenantes" (previously

Candidate phylum OP8 A candidate, or nominee, is the prospective recipient of an award or honor, or a person seeking or being considered for some kind of position; for example: * to be election, elected to an official, office — in this case a Preselection, candida ...

) * aquifer1 * aquifer2 * "''Ca.''

Berkelbacteria Berkelbacteria (formerly ACD58) is a bacterial phylum with candidate status, meaning there are no cultured representatives for this group. It is part of the Candidate Phyla Radiation The candidate phyla radiation (also referred to as CPR grou ...

" (previously Candidate phylum ACD58) * BRC1 * CAB-I * "''Ca.'' Calescamantes" (previously Candidate phylum EM19) * Candidate phylum CPR2 * Candidate phylum CPR3 * Candidate phylum NC10 *

Candidate phylum OP2 A candidate, or nominee, is the prospective recipient of an award or honor, or a person seeking or being considered for some kind of position; for example: * to be election, elected to an official, office — in this case a Preselection, candida ...

* Candidate phylum RF3 * Candidate phylum SAM * Candidate phylum SPAM * Candidate phylum TG2 * Candidate phylum VC2 * Candidate phylum WS1 * Candidate phylum WS2 *

Candidate phylum WS4 A candidate, or nominee, is the prospective recipient of an award or honor, or a person seeking or being considered for some kind of position; for example: * to be election, elected to an official, office — in this case a Preselection, candida ...

Candidate phylum WYO A candidate, or nominee, is the prospective recipient of an award or honor, or a person seeking or being considered for some kind of position; for example: * to be election, elected to an official, office — in this case a Preselection, candida ...

* CKC4 * "''Ca.'' Cloacimonetes" (previously Candidate phylum WWE1) * CPR1 * "''Ca.'' Dependentiae" (previously Candidate phylum TM6) * EM 3 * "''Ca.'' Endomicrobia" Stingl et al. 2005 * "''Ca.''

Fermentibacteria Fermentibacteria (formerly Hyd24-12) is a bacterial phylum with candidate status. It is part of the FCB group FCB may refer to: Banks * Fairfield County Bank, in the United States * Farm Credit Bank, part of the Farm Credit System in the Uni ...

" ( Hyd24-12) * "''Ca.'' Fervidibacteria" (previously Candidate phylum OctSpa1-106) * GAL08 * GAL15 * GN01 * GN03 * GN04 * GN05 *

GN06 GN may refer to: Businesses and organizations * Air Gabon (IATA code: GN), an airline based in Libreville, Gabon * Gamers Nexus, an online computer journalism organization. * Gendarmerie Nationale (disambiguation), any of several national police ...

* GN07 *

GN08 GN may refer to: Businesses and organizations * Air Gabon (IATA code: GN), an airline based in Libreville, Gabon * Gamers Nexus, an online computer journalism organization. * Gendarmerie Nationale (disambiguation), any of several national police ...

* GN09 * GN10 * GN11 * GN12 * GN13 * GN14 *

GN15 Gn15 is a model railroad, rail modelling Scale (ratio), scale, using G scale 1:22.5 scale trains running on HO scale, H0/00 gauge () track, representing minimum gauge railway, minimum gauge and miniature railways. Typical models built are between 1 ...

* GOUTA4 * "''Ca.''

Gracilibacteria Gracilibacteria is a bacterial candidate phylum formerly known as GN02, BD1-5, or SN-2. It is part of the Candidate Phyla Radiation and the Patescibacteria group. The first representative of the Gracilibacteria phylum was reported in 1999 after ...

" (previously Candidate phylum GN02, BD1-5, or BD1-5 group) * Guaymas1 * "''Ca.'' Hydrogenedentes" (previously Candidate phylum NKB19) * JL-ETNP-Z39 * "''Ca.''

Katanobacteria Katanobacteria is a bacterial phylum formerly known as WWE3. It has candidate status, meaning there are no cultured representatives, and is a member of the Candidate Phyla Radiation The candidate phyla radiation (also referred to as CPR group) ...

" (previously Candidate phylum WWE3) * Kazan-3B-09 * KD3-62 * kpj58rc * KSA1 * KSA2 * KSB1 * KSB2 * KSB4 * "''Ca.'' Latescibacteria" (previously Candidate phylum WS3) * LCP-89 * LD1-PA38 * "''Ca.'' Marinamargulisbacteria" (previously Candidate division ZB3) * "''Ca.'' Marinimicrobia" (previously Marine Group A or Candidate phylum SAR406) * "''Ca.''

Melainabacteria Melainabacteria is a phylum related to Cyanobacteria. Organisms belonging to this phylum have been found in the human gut and various aquatic habitats such as groundwater. By analyzing genomes of Melainabacteria, predictions are possible about th ...

" * "''Ca.''

Microgenomates The Microgenomates are a proposed supergroup of bacterial candidate phyla in the Candidate phyla radiation, Candidate Phyla Radiation. Organisms from the Microgenomates group have never been cultured in a lab; rather they have only been detected ...

" (previously Candidate phylum OP11) * "''Ca.''

Modulibacteria Modulibacteria is a bacterial phylum formerly known as KS3B3 or GN06. It is a candidate phylum, meaning there are no cultured representatives of this group. Members of the Modulibacteria phylum are known to cause fatal filament overgrowth (bulki ...

" (previously Candidate phylum KSB3) * MSBL2 * MSBL3 * MSBL4 * MSBL5 * MSBL6 * NPL-UPA2 * NT-B4 * OC31 * "''Ca.'' Omnitrophica" (previously Candidate phylum OP3) * OP4 * OP6 * OP7 * OS-K/ OS-K group * "''Ca.'' Parcubacteria" (previously Candidate phylum OD1) * PAUC34f * "''Ca.'' Peregrinibacteria" (previously

Candidate phylum PER A candidate, or nominee, is the prospective recipient of an award or honor, or a person seeking or being considered for some kind of position; for example: * to be elected to an office — in this case a candidate selection procedure occurs. * t ...

) * "''Ca.''

Poribacteria Poribacteria are a candidate phylum of bacteria originally discovered in the microbiome of marine sponges (''Porifera''). Poribacteria are Gram-negative primarily aerobic mixotrophs with the ability for oxidative phosphorylation, glycolysis, ...

" * RsaHF231 * S2R-29 * "''Ca.''

Saccharibacteria Saccharibacteria, formerly known as ''TM7'', is a major bacterial lineage. It was discovered through 16S rRNA sequencing . TM7x from the human oral cavity was cultivated and revealed that TM7x is an extremely small coccus (200-300 nm) an ...

" (previously Candidate phylum TM7) * SBR1093 * SBYG-2791 * Candidate phylum SC3 * Candidate phylum SC4 * Sediment-1 * Sediment-2 * Sediment-3 * Sediment-4 * SHA-109 * SM2F11 * TA06 * "''Ca.'' Tectomicrobia" *

TG3 ''TG3'' (''TeleGiornale 3'') is the brand for Italian state-owned TV channel Rai 3's news programmes. They are shown domestically and across Europe on Rai 3. The newscasts are aired from Rai's Studios in Saxa Rubra, Rome, Italy, except for the 1 ...

("''Ca.'' Chitinivibrionia") * WCHB1-60 *

WD272 WD may refer to: Arts and entertainment * The Walking Dead (TV series), ''The Walking Dead'' (TV series) * White Dwarf (magazine), ''White Dwarf'' (magazine) Businesses and organizations Government agencies * Royal Canadian Air Force Wome ...

* WOR-1 * WOR-3 * WPS-1 * WPS-2 * WS5 * WS6 *

ZB2 ZB or Zb may refer to: Businesses and organisations * Monarch Airlines (IATA code ZB) * Zbrojovka Brno, a former Czechoslovakian state producer of small weapons and munitions * Zentralbahn, a Swiss railway * Zentralblatt MATH, now zbMATH, interna ...

aka OD1-ZB2 subgroup of OD1 ("''Ca.'' Parcubacteria") * "''Ca.'' Zixibacteria"

Classes

*"''Ca.'' Lambdaproteobacteria" Anantharaman et al. 2016 *"''Ca.'' Muproteobacteria" Anantharaman et al. 2016 *"''Ca.''

Zetaproteobacteria The class Zetaproteobacteria is the sixth and most recently described class of the Pseudomonadota. Zetaproteobacteria can also refer to the group of organisms assigned to this class. The Zetaproteobacteria were originally represented by a single ...

" Emerson et al. 2007

Orders

*"''Ca.''

Nitrosopumilales The Nitrosopumilales are an order of the Archaea class Nitrososphaeria. Phylogeny Phylogeny of Nitrososphaerales Taxonomy The currently accepted taxonomy is based on the List of Prokaryotic names with Standing in Nomenclature (LPSN) and Nati ...

" Könneke et al. 2005

Families

*"''Ca.''

Midichloriaceae "''Candidatus'' Midichloriaceae" is a family of bacteria, included in the order Rickettsiales. No member of this family has been cultured in the laboratory, so the entire family has been given the status ''candidatus In prokaryote nomenclature, ...

" Montagna et al. 2013 *"''Ca.''

Nitrosopumilaceae The Nitrosopumilaceae are a family of the Archaea order Nitrosopumilales The Nitrosopumilales are an order of the Archaea class Nitrososphaeria. Phylogeny Phylogeny of Nitrososphaerales Taxonomy The currently accepted taxonomy is based on ...

" Könneke et al. 2005 *"''Ca.''

Procabacteriaceae "Procabacteriaceae" is a ''Candidatus'' family of Microbiological culture, uncultivated Gram-negative Betaproteobacteria. The sole genus, ''"Procabacter"'', was identified as an obligate endosymbiont of ''Acanthamoeba''. References External li ...

" *"''Ca.''

Rhabdochlamydiaceae ''Candidatus'' Rhabdochlamydia is a genus of intracellular bacteria and the sole genus in the family ''Candidatus'' Rhabdochlamydiaceae. As a ''Candidatus'' taxon, no-one has yet managed to culture them ''in vitro'' for deposition in a culture co ...

Genera

*"''Ca.'' Accumulibacter" Hesselmann et al. 1999 *"''Ca.'' Allobeggiatoa" Hinck et al. 2011 *"''Ca.'' Arthromitus" Snel et al. 1995 *"''Ca.'' Bacilloplasma" Kostanjšek et al. 2007 *"''Ca.'' Baumannia" Moran et al. 2003 *"''Ca.''

Blochmannia ''Blochmannia'' is a genus of symbiotic bacteria found in carpenter ant. There are over 1000 species of these ants and, as of 2014, of the over 30 species of carpenter ant that have been investigated, all contain some form of ''Blochmannia''. T ...

" Sauer et al. 2000 *"''Ca.'' Carsonella" Thao et al. 2000 *"''Ca.'' Chlorothrix" Klappenbach and Pierson 2004 *"''Ca.'' Competibacter" Crocetti et al. 2002 *"''Ca.'' Contubernalis" Zhilina et al. 2005 *"''Ca.'' Desulforudis" *"''Ca.'' Endomicrobium" Stingl et al. 2005 *"''Ca.'' Epixenosoma" TEM - Epixenosomes

*"''Ca.'' Giganthauma" *"''Ca.'' Glomeribacter" Bianciotto et al. 2003 *"''Ca.'' Kleidoceria" Kuechler et al. 2010 *"''Ca.'' Kuenenia" Schmid et al. 2000 *"''Ca.''

Liberibacter ''Liberibacter'' is a genus of Gram-negative bacteria in the Rhizobiaceae family. Detection of the liberibacteria is based on PCR amplification of their 16S rRNA gene with specific primers. Members of the genus are plant pathogens mostly transm ...

" *"''Ca.'' Lokiarchaeum" *"''Ca.'' Lumbricincola" Nechitaylo et al. 2009 *"''Ca.'' Magnetobacterium" Murray and Stackebrandt 1995 *"''Ca.'' Methanoregula" *"''Ca.'' Microthrix" *"''Ca.'' Nardonella" Lefèvre et al. 2004 *"''Ca.'' Nitrosoarchaeum" Blainey et al. 2011 *"''Ca.''

Nitrosopumilus ''Nitrosopumilus maritimus'' is an extremely common archaeon living in seawater. It is the first member of the Group 1a Nitrososphaerota (formerly Thaumarchaeota) to be isolated in pure culture. Gene sequences suggest that the Group 1a Nitrososph ...

" Könneke et al. 2005 *"''Ca.''

Pelagibacter "''Candidatus'' Pelagibacter", with the single species "''Ca.'' P. communis", was isolated in 2002 and given a specific name, although it has not yet been described as required by the bacteriological code. It is an abundant member of the SAR11 ...

" Rappe et al. 2002 *"''Ca.'' Photodesmus" Hendry and Dunlap 2011 *"''Ca.''

Phytoplasma Phytoplasmas are obligate intracellular parasites of plant phloem tissue and of the insect vectors that are involved in their plant-to-plant transmission. Phytoplasmas were discovered in 1967 by Japanese scientists who termed them mycoplasma-lik ...

" Firrao et al. 2004 *"''Ca.'' Portiera" Thao and Baumann 2004 *"''Ca.'' Procabacter" Horn et al. 2002 *"''Ca.'' Rhabdochlamydia" *"''Ca.'' Riegeria" Gruber-Vodicka et al. 2011 *"''Ca.'' Rohrkolberia" Kuechler et al. 2011 *"''Ca.'' Salinibacter" Antón et al. 2000 *"''Ca.'' Savagella" Thompson et al. 2012 *"''Ca.''

Scalindua "''Candidatus'' Scalindua" is a bacterial genus, and a proposed member of the order Planctomycetales. These bacteria lack peptidoglycan in their cell wall and have a compartmentalized cytoplasm. They are ammonium oxidizing bacteria found in mar ...

" *"''Ca.'' Similichlamydia" Stride et al. 2013 *"''Ca.'' Symbiothrix" Hongoh et al. 2007 *"''Ca.'' Tremblaya" Thao et al. 2002 *"''Ca.'' Xiphinematobacter" Vandekerckhove et al. 2000

Species and subspecies

Unless otherwise noted (♦), these entries are from LPSN. *"''Ca.'' Acaryochloris bahamiensis" López-Legentil et al. 2011 *"''Ca.'' Acidianus copahuensis" Giaveno et al. 2013 *"''Ca.'' Aciduliprofundum boonei" Schouten et al. 2008

*"''Ca.'' Accumulibacter phosphatis" Hesselmann et al. 1999 EBPR FISH Floc

*"''Ca.'' Actinobaculum timonae" Drancourt et al. 2004 *"''Ca.'' Adiaceo aphidicola" Darby et al. 2005 *"''Ca.'' Allobeggiatoa salina" Hinck et al. 2011 *"''Ca.'' Alysiomicrobium bavaricum" Kragelund et al. 2006 *"''Ca.'' Alysiosphaera europaea" Kragelund et al. 2006 *"''Ca.'' Amoebinatus massiliae" Greub et al. 2004 *"''Ca.'' Amoebophilus asiaticus" Horn et al. 2001 *"''Ca.'' Amphibiichlamydia ranarum" Martel et al. 2013 *"''Ca.'' Anadelfobacter veles" Vannini et al. 2010 *"''Ca.'' Ancillula trichonymphae" Strassert et al. 2012 *"''Ca.'' Anammoxoglobus propionicus" Kartal et al. 2007 *"''Ca.'' Aquiluna rubra" Hahn 2009 *"''Ca.'' Aquirestis calciphila" Hahn and Schauer 2007 *"''Ca.'' Arcobacter sulfidicus" Wirsen et al. 2002 *"''Ca.'' Arsenophonus arthropodicus" Dale et al. 2002 *"''Ca.''

Arsenophonus phytopathogenicus ''Arsenophonus'' is a genus of Morganellaceae, of the Gammaproteobacteria. Members of the ''Arsenophonus'' genus are increasingly discovered bacterial symbionts of arthropods that are estimated to infect over 5% of arthropod species globally ...

" Bressan et al. 2012 *"''Ca.'' Arsenophonus triatominarum" Hypsa and Dale 1997 *"''Ca.'' Aschnera chinzeii" Hosokawa et al. 2012 *"''Ca.'' Atelocyanobacterium thalassa(♦) *"''Ca.'' Azoamicus ciliaticola" Graf et al. 2021 *"''Ca.''

Bacteroides massiliae ''Bacteroides'' is a genus of Gram-negative, Obligate anaerobe, obligate anaerobic bacterium, bacteria. ''Bacteroides'' species are non endospore-forming bacillus (shape), bacilli, and may be either motile or nonmotile, depending on the species. ...

" Drancourt et al. 2004 *"''Ca.'' Bartonella ancashi" Blazes et al. 2013 *"''Ca.''

Bartonella antechini ''Bartonella'' is a genus of Gram-negative bacterium, bacteria. It is the only genus in the family Bartonellaceae. Facultative parasite, Facultative intracellular parasites, ''Bartonella'' species can infect healthy people, but are considered es ...

" Kaewmongkol et al. 2011 *"''Ca.'' Bartonella breitschwerdtii(♦) *"''Ca.'' Bartonella bandicootii" Kaewmongkol et al. 2011 *"''Ca.''

Bartonella durdenii "''Candidatus'' Bartonella durdenii" is a candidatus bacteria Bacteria (; singular: bacterium) are ubiquitous, mostly free-living organisms often consisting of one biological cell. They constitute a large domain of prokaryotic microor ...

(♦) *"''Ca.'' Bartonella eldjazairii(♦) *"''Ca.''

Bartonella mayotimonensis ''Bartonella'' is a genus of Gram-negative bacterium, bacteria. It is the only genus in the family Bartonellaceae. Facultative parasite, Facultative intracellular parasites, ''Bartonella'' species can infect healthy people, but are considered es ...

" Lin et al. 2010 *"''Ca.'' Bartonella melophagi(♦) *"''Ca.'' Bartonella merieuxii" Chomel et al. 2012 *"''Ca.''

Bartonella monaxi ''Bartonella'' is a genus of Gram-negative bacterium, bacteria. It is the only genus in the family Bartonellaceae. Facultative parasite, Facultative intracellular parasites, ''Bartonella'' species can infect healthy people, but are considered es ...

(♦) *"''Ca.'' Bartonella rudakovii(♦) *"''Ca.'' Bartonella thailandensis" Saisongkorh et al. 2009 *"''Ca.'' Bartonella volans(♦) *"''Ca.'' Bartonella woyliei" Kaewmongkol et al. 2011 *"''Ca.''

Baumannia cicadellinicola ''Baumannia'' can refer to: * Candidatus ''Baumannia'', a candidatus genus of bacteria including Ca. '' Baumannia cicadellinicola'' * ''Knoxia ''Knoxia'' is a genus of flowering plants in the family Rubiaceae The Rubiaceae are a family of ...

" Moran et al. 2003 *"''Ca.'' Benitsuchiphilus tojoi" Hosokawa et al. 2010 *"''Ca.'' Berkiella aquae" Mehari et al. 2016 *"''Ca.'' Berkiella cookevillensis" Mehari et al. 2016 *"''Ca.'' Blochmannia floridanus" Sauer et al. 2000 *"''Ca.'' Blochmannia herculeanus" Sauer et al. 2000 *"''Ca.'' Blochmannia rufipes" Sauer et al. 2000 *"''Ca.''

Borrelia tachyglossi ''Borrelia'' is a genus of bacteria of the spirochete phylum. Several species cause Lyme disease, also called Lyme borreliosis, a zoonotic, vector-borne disease transmitted by ticks. Other species of ''Borrelia'' cause relapsing fever, and are tr ...

" Loh et al. 2017 *"''Ca.'' Borrelia texasensis" Lin et al. 2005 *"''Ca.'' Branchiomonas cysticola" Toenshoff et al. 2012 *"''Ca.''

Brocadia anammoxidans "''Candidatus'' Brocadia" is a ''candidatus'' genus of bacteria. Many of the species in this genus are capable of anammox. Phylogeny Phylogeny based on GTDB 07-RS207 by Genome Taxonomy Database The Genome Taxonomy Database (GTDB) is an onl ...

" Jetten et al. 2001 *"''Ca.'' Brocadia caroliniensis" Magrí et al. 2012 *"''Ca.''

Brocadia fulgida ''Candidatus ''Brocadia fulgida is a bacterial species that performs the anammox process. Fatty acids constitute an enrichment culture for ''B. fulgida''. The species' 16S ribosomal RNA 16 S ribosomal RNA (or 16 S rRNA) is the RNA component o ...

" Kartal et al. 2004 *"''Ca.''

Brocadia sinica "''Candidatus'' Brocadia" is a ''candidatus'' genus of bacteria. Many of the species in this genus are capable of anammox. Phylogeny Phylogeny based on GTDB 07-RS207 by Genome Taxonomy Database The Genome Taxonomy Database (GTDB) is an onl ...

" Hu et al. 2010 *"''Ca.'' Brownia rhizoecola" Gruwell et al. 2010 *"''Ca.'' Burkholderia andongensis" Lemaire et al. 2011 *"''Ca.'' Burkholderia calva" Van Oevelen et al. 2004 *"''Ca.'' Burkholderia crenata(♦) *"''Ca.'' Burkholderia hispidae" Lemaire et al. 2012 *"''Ca.'' Burkholderia kirkii" Van Oevelen et al. 2002 *"''Ca.'' Burkholderia mamillata(♦) *"''Ca.''

Burkholderia nigropunctata ''Burkholderia'' is a genus of Pseudomonadota whose pathogenic members include the Burkholderia cepacia complex, ''Burkholderia cepacia'' complex, which attacks humans and ''Burkholderia mallei'', responsible for glanders, a disease that occurs m ...

" Van Oevelen et al. 2004 *"''Ca.'' Burkholderia petitii" Lemaire et al. 2011 *"''Ca.'' Burkholderia rigidae" Lemaire et al. 2012 *"''Ca.'' Burkholderia schumannianae" Lemaire et al. 2012 *"''Ca.'' Burkholderia verschuerenii(♦) *"''Ca.''

Burkholderia virens ''Burkholderia'' is a genus of Pseudomonadota whose pathogenic members include the Burkholderia cepacia complex, ''Burkholderia cepacia'' complex, which attacks humans and ''Burkholderia mallei'', responsible for glanders, a disease that occurs m ...

(♦) *"''Ca.'' Caedibacter acanthamoebae" Horn et al. 1999 *"''Ca.''

Caldiarchaeum subterraneum Archaea ( ; singular archaeon ) is a domain of single-celled organisms. These microorganisms lack cell nuclei and are therefore prokaryotes. Archaea were initially classified as bacteria, receiving the name archaebacteria (in the Archaeba ...

" Nunoura et al. 2011 *"''Ca.''

Campylobacter hominis ''Campylobacter'' (meaning "curved bacteria") is a genus of Gram-negative bacteria. ''Campylobacter'' typically appear comma- or s-shaped, and are motile. Some ''Campylobacter'' species can infect humans, sometimes causing campylobacteriosis, a ...

" Lawson et al. 1998 *"''Ca.'' Captivus acidiprotistae" Baker et al. 2003 *"''Ca.''

Cardinium hertigii "''Candidatus'' Cardinium" is a genus of Gram-negative parasitic bacteria that reside within cells of some arthropods and nematodes. Although they have not yet been isolated in pure culture (hence the designation ''Candidatus''), they are know ...

" Zchori-Fein et al. 2004 *"''Ca.'' Carsonella ruddii" Thao et al. 2000 *"''Ca.'' Chloracidobacterium thermophilum" Bryant et al. 2007 *"''Ca.'' Chlorothrix halophila" Klappenbach and Pierson 2004 *"''Ca.''

Chryseobacterium massiliae ''Chryseobacterium'' is a genus of Gram-negative bacteria. ''Chryseobacterium'' species are chemoorganotrophic, rod shape gram-negative bacteria. ''Chryseobacterium'' form typical yellow-orange color colonies due to flexirubin-type pigment. The g ...

" Greub et al. 2004 *"''Ca.'' Chryseobacterium timonae" Drancourt et al. 2004 *"''Ca.'' Clavochlamydia salmonicola" Karlsen et al. 2008 *"''Ca.'' Cloacamonas acidaminovorans" Pelletier et al. 2008 *"''Ca.'' comitans" Jacobi et al. 1996 *"''Ca.'' Competibacter phosphatis" Crocetti et al. 2002 *"''Ca.'' Consessoris aphidicola" Darby et al. 2005 *"''Ca.'' Contubernalis alkalaceticum" Zhilina et al. 2005 *"''Ca.'' Cryptoprodotis polytropus" Ferrantini et al. 2009 *"''Ca.'' Curculioniphilus buchneri" Toju et al. 2009 *"''Ca.'' Cyrtobacter comes" Vannini et al. 2010 *"''Ca.'' Cyrtobacter zanobii" Boscaro et al. 2013 *"''Ca.'' Defluviella procrastinata" Boscaro et al. 2013 *"''Ca.''

Desulforudis audaxviator "''Candidatus'' Desulforudis audaxviator" is a monospecific genus of bacteria that lives in groundwater at depths from below the Earth's surface. Etymology The name comes from a quotation from Jules Verne's novel ''Journey to the Center of th ...

" Chivian et al. 2008 Desulforudis audaxviator

*"''Ca.'' Desulfovibrio trichonymphae" Sato et al. 2009 *"''Ca.'' Devosia euplotis" Vannini et al. 2004 *"''Ca.'' Ecksteinia adelgidicola" Toenshoff et al. 2012 *"''Ca.'' Ehrlichia walkerii" Brouqui et al. 2003 *"''Ca.'' Endobugula glebosa" Lim and Haygood 2004 *"''Ca.'' Endobugula sertula" Haygood and Davidson 1997 *"''Ca.'' Endolissoclinum faulkneri" Kwan et al. 2012 *"''Ca.'' Endoecteinascidia frumentensis" Pérez-Matos et al. 2007 *"''Ca.'' Endomicrobium pyrsonymphae" Stingl et al. 2005 *"''Ca.'' Endomicrobium trichonymphae" Stingl et al. 2005 *"''Ca.'' Endonucleobacter bathymodioli" Zielinski et al. 2009 *"''Ca.'' Endoriftia persephone" Robidart et al. 2008 *"''Ca.'' Endowatersipora palomitas" Anderson and Haygood 2007 *"''Ca.'' Endowatersipora rubus" Anderson and Haygood 2007 *"''Ca.'' Entotheonella palauensis" Schmidt et al. 2000 *"''Ca.'' Epiflobacter spp." Xia et al. 2008 *"''Ca.''

Erwinia dacicola ''Erwinia'' is a genus of Enterobacterales bacteria containing mostly plant pathogenic species which was named for the famous plant pathologist, Erwin Frink Smith. It contains Gram-negative bacteria related to ''Escherichia coli'', ''Shigella'', ...

" Capuzzo et al. 2005 *"''Ca.''

Evansia muelleri ''Evansia'' is a monotypic genus of dwarf spiders containing the single species, ''Evansia merens''. It was first described by Octavius Pickard-Cambridge in 1901, and has a palearctic distribution. See also * List of Linyphiidae species (A–H ...

" Kuechler et al. 2013 *"''Ca.'' Flaviluna lacus" Hahn 2009 *"''Ca.'' Fodinabacter communificans" Bertin et al. 2011 *"''Ca.'' Francisella noatunensis subsp. endociliophora" Schrallhammer et al. 2011 *"''Ca.''

Frankia datiscae ''Frankia'' is a genus of nitrogen-fixing bacteria that live in symbiosis with actinorhizal plants, similar to the ''Rhizobium'' bacteria found in the root nodules of legumes in the family Fabaceae. ''Frankia'' also initiate the forming of root ...

" Persson et al. 2011 *"''Ca.'' Fritschea bemisiae" Everett et al. 2005 *"''Ca.'' Fritschea eriococci" Everett et al. 2005 *"''Ca.'' Gillettellia cooleyia" Toenshoff et al. 2012 *"''Ca.'' Gilliamella apicola" Martinson et al. 2012 *"''Ca.'' Glomeribacter gigasporarum" Bianciotto et al. 2003 *"''Ca.'' Gortzia infectiva" Boscaro et al. 2012 *"''Ca.'' Haliscomenobacter calcifugiens" Hahn and Schauer 2007 *"''Ca.'' Halomonas phosphatis" Nguyen et al. 2012 *"''Ca.''

Hamiltonella defensa ''Hamiltonella defensa'' (''H. defensa'') is a species of bacteria. It is maternally or sexually transmitted and lives as an endosymbiont of whiteflies and aphids, meaning that it lives within a host, protecting its host from attack. It does this ...

" Moran et al. 2005 *"''Ca.'' Helicobacter bovis" De Groote et al. 1999 *"''Ca.''

Helicobacter heilmannii ''Helicobacter'' is a genus of Gram-negative bacteria possessing a characteristic helix, helical shape. They were initially considered to be members of the genus ''Campylobacter'', but in 1989, Goodwin ''et al.'' published sufficient reasons to ...

" O'Rourke et al. 2004 *"''Ca.'' Helicobacter suis" De Groote et al. (includes strains previously known as ''

'' type one) *"''Ca.'' Heliomonas lunata" Asao et al. 2012 *"''Ca.'' Hemipteriphilus asiaticus" Bing et al. 2013 *"''Ca.'' Hemobacterium ranarum" Zhang and Rikihisa 2004 (previously known as '' Aegyptianella ranarum'') *"''Ca.'' Hepatincola porcellionum" Wang et al. 2004 *"''Ca.'' Hepatobacter penaei" Numan et al. 2013 *"''Ca.'' Hepatoplasma crinochetorum" Wang et al. 2004 *"''Ca.'' Hodgkinia cicadicola" McCutcheon et al. 2009 *"''Ca.'' Holdemania massiliensis(♦) *"''Ca.'' Ishikawaella capsulata" Hosokawa et al. 2006 *"''Ca.'' Isobeggiatoa divolgata" Salman et al. 2011 *"''Ca.'' Jettenia asiatica" Quan et al. 2008 *"''Ca.''

Kinetoplastibacterium blastocrithidii Trypanosomatida is a group of kinetoplastid excavates distinguished by having only a single flagellum. The name is derived from the Greek ''trypano'' (borer) and ''soma'' (body) because of the corkscrew-like motion of some trypanosomatid species. ...

" Du et al. 1994 *"''Ca.'' Kinetoplastibacterium crithidii" Du et al. 1994 *"''Ca.'' Kleidoceria schneideri" Kuechler et al. 2010 *"''Ca.'' Kopriimonas aquarianus" Quinn et al. 2012 *"''Ca.''

Korarchaeum cryptofilum Archaea ( ; singular archaeon ) is a domain of single-celled organisms. These microorganisms lack cell nuclei and are therefore prokaryotes. Archaea were initially classified as bacteria, receiving the name archaebacteria (in the Archaebac ...

" Elkins et al. 2008 *"''Ca.'' Koribacter versatilis" Ward et al. 2009 *"''Ca.'' Kuenenia stuttgartiensis" Schmid et al. 2000 *"''Ca.'' Lariskella arthropodarum" Matsuura et al. 2012 *"''Ca.'' Legionella jeonii" Park et al. 2004 *"''Ca.''

Liberibacter americanus ''Liberibacter'' is a genus of Gram-negative bacteria in the Rhizobiaceae family. Detection of the liberibacteria is based on PCR amplification of their 16S rRNA gene with specific primers. Members of the genus are plant pathogens mostly transm ...

" Teixeira et al. 2005 - one cause of Citrus greening disease Huanglongbing

*"''Ca.'' Liberibacter africanus" Roberts et al. 2015 - one cause of Citrus greening disease *"''Ca.'' Liberibacter africanus" corrig. Jagoueix et al. 1994 (previously "Ca. '' Liberobacter africanum'') *"''Ca.''

Liberibacter africanus subsp. capensis ''Liberibacter'' is a genus of Gram-negative bacteria in the Rhizobiaceae family. Detection of the liberibacteria is based on PCR amplification of their 16S ribosomal RNA, 16S rRNA gene with specific primers. Members of the genus are plant path ...

" Garnier et al. 2000 *"''Ca.''

Liberibacter asiaticus ''Liberibacter'' is a genus of Gram-negative bacteria in the Rhizobiaceae family. Detection of the liberibacteria is based on PCR amplification of their 16S ribosomal RNA, 16S rRNA gene with specific primers. Members of the genus are plant path ...

" corrig. Jagoueix et al. 1994 (previously "Ca. '' Liberobacter asiaticum'') - one cause of Citrus greening disease *"''Ca.''

Liberibacter europaeus ''Liberibacter'' is a genus of Gram-negative bacteria in the Rhizobiaceae family. Detection of the liberibacteria is based on PCR amplification of their 16S rRNA gene with specific primers. Members of the genus are plant pathogens mostly transm ...

" Raddadi et al. 2011 *"''Ca.''

Liberibacter psyllaurous ''Liberibacter'' is a genus of Gram-negative bacteria in the Rhizobiaceae family. Detection of the liberibacteria is based on PCR amplification of their 16S ribosomal RNA, 16S rRNA gene with specific primers. Members of the genus are plant path ...

" Hansen et al. 2008 *"''Ca.'' Liberibacter solanacearum" Liefting et al. 2009 - cause of Psyllid yellows and

Zebra chip Zebra chip, also known as ''papa manchada'' and ''papa rayada'', is a disease in potatoes putatively caused by an alphaproteobacteria "''Candidatus'' Liberibacter solanacearum", which is vectored by the potato psyllid. When fried, potato tubers ...

*"''Ca.'' Limnoluna rubra" Hahn 2009 *"''Ca.'' Macropleicola appendiculatae" Kölsch et al. 2009 *"''Ca.'' Macropleicola muticae" Kölsch et al. 2009 *"''Ca.''

Magnetobacterium bavaricum ''Magnetobacterium bavaricum'' is a species of bacterium. Morphology and physiology ''Magnetobacterium bavaricum'' is a large rod shaped Gram-negative bacteria, gram negative microorganism that ranges from 8um-10um in length and 1.5um-2um in w ...

" Spring et al. 1993 *"''Ca.'' Magnetoglobus multicellularis" Abreu et al. 2007 *"''Ca.'' Magnospira bakii" Snaidr et al. 1999 *"''Ca.'' Maribeggiatoa vulgaris" Salman et al. 2011 *"''Ca.'' Marispirochaeta associata" Shivani et al. 2016 *"''Ca.'' Marithioploca araucae" Salman et al *"''Ca.'' Marithrix sessilis" Salman et al. 2011 *"''Ca.'' Mesochlamydia elodeae" Corsaro et al. 2013 *"''Ca.'' Metachlamydia lacustris" Corsaro et al. 2010 *"''Ca.'' Methanogranum caenicola" Iino et al. 2013 *"''Ca.'' Methanomethylophilus alvus" Borrel et al. 2012 *"''Ca.''

Methanoregula boonei In the alpha taxonomy, taxonomy of microorganisms, ''Candidatus Methanoregula'' is a genus (biology), genus of the Methanomicrobiales. It was is isolated from an acidic peat bog. It produces methane at the lowest pH of any known organism. See a ...

" Bräuer et al. 2006 *"''Ca.''

Methylacidiphilum infernorum ''Methylacidiphilum infernorum '' is an extremely acidophilic methanotrophic aerobic bacteria first isolated and described in 2007 growing on soil and sediment on Hell's Gate, New Zealand. Similar organisms have also been isolated from geotherm ...

" Hou et al. 2008 *"''Ca.'' Methylomirabilis oxyfera" Ettwig et al. 2010 *"''Ca.'' Micrarchaeum acidiphilum(♦) *"''Ca.''

Microthrix calida The ''Acidimicrobiia'' are a class of Actinomycetota, in which three families, eight genera, and nine species have been described, ''Acidimicrobium ferrooxidans'' is the type species of the order. Phylogeny Taxonomy The currently accepted tax ...

" Levantesi et al. 2006 *"''Ca.'' Microthrix parvicella" Blackall et al. 1996 *"''Ca.'' Midichloria mitochondrii" Sassera et al. 2006 *"''Ca.'' Monilibacter batavus" Kragelund et al. 2006 *"''Ca.'' Moranella endobia" McCutcheon and von Dohlen 2011 *"''Ca.'' Mycoplasma aoti" Barker et al. 2011 *"''Ca.''

Mycoplasma corallicola ''Mycoplasma'' is a genus of bacteria that, like the other members of the class ''Mollicutes'', lack a cell wall around their cell membranes. Peptidoglycan (murein) is absent. This characteristic makes them naturally resistant to antibiotics ...

" Neulinger et al. 2009 *"''Ca.'' Mycoplasma haematoparvum" Sykes et al. 2005 *"''Ca.''

Mycoplasma haemobos ''Mycoplasma'' is a genus of bacteria that, like the other members of the class ''Mollicutes'', lack a cell wall around their cell membranes. Peptidoglycan (murein) is absent. This characteristic makes them naturally resistant to antibiotics ...

" Tagawa et al. 2008 *"''Ca.'' Mycoplasma haemodidelphidis" Messick et al. 2002 *"''Ca.''

Mycoplasma haemofelis ''Mycoplasma haemofelis'' (formerly ''Haemobartonella felis'') is a gram-negative epierythrocytic parasitic bacterium. It often appears in bloodsmears as small (0.6μm) coccoid bodies, sometimes forming short chains of three to eight organisms. ...

" Neimark et al. 2001 (synonymous with '' Haemobartonella felis'')

*"''Ca.'' Mycoplasma haemolamae" Messick et al. 2002 *"''Ca.'' Mycoplasma haemomacaque" Maggi et al. 2013 *"''Ca.'' Mycoplasma haemominutum" Foley and Pedersen 2001 (previously "'' Haemobartonella felis'' small form (Hfsm)") *"''Ca.'' Mycoplasma haemomuris" Neimark et al. 2001 (synonymous with '' Haemobartonella muris'') *"''Ca.'' Mycoplasma haemomuris subsp. musculi" Harasawa et al. 2015 *"''Ca.'' Mycoplasma haemomuris subsp. ratti" Harasawa et al. 2015 *"''Ca.''

Mycoplasma haemosuis ''Mycoplasma'' is a genus of bacteria that, like the other members of the class ''Mollicutes'', lack a cell wall around their cell membranes. Peptidoglycan (murein) is absent. This characteristic makes them naturally resistant to antibiotics ...

" Neimark et al. 2001 (synonymous with '' Eperythrozoon suis'' and '' Mycoplasma suis'') *"''Ca.''

Mycoplasma haemovis ''Mycoplasma'' is a genus of bacteria that, like the other members of the class ''Mollicutes'', lack a cell wall around their cell membranes. Peptidoglycan (murein) is absent. This characteristic makes them naturally resistant to antibiotics ...

" Hornok et al. 2009 *"''Ca.'' Mycoplasma haemozalophi" Volokhov et al. 2011 *"''Ca.'' Mycoplasma kahanei" Neimark et al. 2002 *"''Ca.''

Mycoplasma ravipulmonis ''Mycoplasma'' is a genus of bacteria that, like the other members of the class ''Mollicutes'', lack a cell wall around their cell membranes. Peptidoglycan (murein) is absent. This characteristic makes them naturally resistant to antibiotics ...

" Neimark et al. 1998 *"''Ca.''

Mycoplasma turicensis ''Mycoplasma'' is a genus of bacteria that, like the other members of the class ''Mollicutes'', lack a cell wall around their cell membranes. Peptidoglycan (murein) is absent. This characteristic makes them naturally resistant to antibiotics ...

" Willi et al. 2006 *"''Ca.'' Mycoplasma wenyonii" Neimark et al. 2001 (synonymous with '' Eperythrozoon wenyonii'') *"''Ca.'' Nebulobacter yamunensis" Boscaro et al. 2012 *"''Ca.'' Neoehrlichia arcana" Gofton et al. 2016 *"''Ca.'' Neoehrlichia australis" Gofton et al. 2016 *"''Ca.'' Neoehrlichia lotoris" Yabsley et al. 2008 *"''Ca.'' Neoehrlichia mikurensis" Kawahara et al. 2004 *"''Ca.'' Nitrosoarchaeum koreensis" Kim et al. 2011 *"''Ca.'' Nitrosoarchaeum limnia" Blainey et al. 2011 *"''Ca.'' Nitrosocaldus yellowstonii" de la Torre et al. 2008 *"''Ca.'' Nitrosopelagicus brevis(♦) *"''Ca.'' Nitrosopumilus koreensis" Park et al. 2012 *"''Ca.''

Nitrosopumilus maritimus ''Nitrosopumilus maritimus'' is an extremely common archaeon living in seawater. It is the first member of the Group 1a Nitrososphaerota (formerly Thaumarchaeota) to be isolated in pure culture. Gene sequences suggest that the Group 1a Nitrososp ...

" Könneke et al. 2005 *"''Ca.'' Nitrosopumilus salaria" Mosier et al. 2012 *"''Ca.'' Nitrosopumilus sediminis" Park et al. 2012 *"''Ca.''

Nitrososphaera gargensis ''Nitrososphaera gargensis'' is a non-pathogenic, small coccus measuring 0.9 ± 0.3 μm in diameter. ''N. gargensis'' is observed in small abnormal cocci groupings and uses its archaella to move via chemotaxis. Being an Archaeon, ''Nitrososphaera ...

" Hatzenpichler et al. 2008 *"''Ca.''

Nitrososphaera viennensis ''Nitrososphaera'' is a mesophilic genus of ammonia-oxidizing Crenarchaeota. The first ''Nitrososphaera'' organism was discovered in garden soils at the University of Vienna leading to the categorization of a new genus, family, order and class of ...

" Tourna et al. 2011 *"''Ca.'' Nitrospira bockiana" Lebedeva et al. 2008 *"''Ca.''

Nitrospira defluvii ''Nitrospira'' (from Latin: nitro, meaning "nitrate" and Greek: spira, meaning "spiral") translate into “a nitrate spiral” is a genus of bacteria within the monophyletic clade of the Nitrospirota phylum. The first member of this genus was d ...

" Spieck et al. 2006 *"''Ca.'' Nitrosotalea devanaterra" Lehtovirta-morley et al. 2011 *"''Ca.'' Nitrotoga arctica" Alawi et al. 2007 *"''Ca.'' Nostocoida limicola" Blackall et al. 2000 (strains Ben 17, Ben 18, Ben 67, Ben 68 and Ben 74 are now ''

Tetrasphaera jenkinsii ''Tetrasphaera jenkinsii'' is a bacterium species from the genus ''Tetrasphaera'' which has been isolated from activated sludge from Glenelg in Australia Australia, officially the Commonwealth of Australia, is a sovereign country com ...

'', strain Ben 70 is ''

Tetrasphaera vanveenii ''Tetrasphaera '' is a bacterial genus from the family of Intrasporangiaceae Intrasporangiaceae is an actinomycete The Actinomycetales is an order of Actinomycetota. A member of the order is often called an actinomycete. Actinomycetales a ...

'', and strains Ver 1 and Ver 2 are ''

Tetrasphaera veronensis ''Tetrasphaera veronensis'' is a bacterium species from the genus ''Tetrasphaera'' which has been isolated from activated sludge from Verona in Italy. References Intrasporangiaceae Bacteria described in 2006 {{Actinobacteria ...

'') *"''Ca.'' Odyssella thessalonicensis" Birtles et al. 2000 *"''Ca.'' Ovobacter propellens" Fenchel and Thar 2004 *"''Ca.'' Paenicardinium endonii" Noel and Atibalentja 2006 *"''Ca.'' Parabeggiatoa communis" Salman et al. 2011 *"''Ca.'' Paracaedibacter acanthamoebae" Horn et al. 1999 *"''Ca.'' Paracaedibacter symbiosus" Horn et al. 1999 *"''Ca.'' Paraholospora nucleivisitans" Eschbach et al. 2009 *"''Ca.'' Parilichlamydia carangidicola" Stride et al. 2013 *"''Ca.'' Parvarchaeum acidophilus(♦) *"''Ca.'' Pasteuria aldrichii" Giblin-Davis et al. 2011 *"''Ca.'' Pasteuria usgae" Giblin-Davis et al. 2003 *"''Ca.''

Pelagibacter ubique "''Candidatus'' Pelagibacter", with the single species "''Ca.'' P. communis", was isolated in 2002 and given a specific name, although it has not yet been described as required by the bacteriological code. It is an abundant member of the SAR11 c ...

" Rappe et al. 2002 *"''Ca.'' Peptostreptococcus massiliae" Drancourt et al. 2004 *"''Ca.'' Phlomobacter fragariae" Zreik et al. 1998 *"''Ca.'' Photodesmus katoptron" Hendry and Dunlap 2011 *"''Ca.'' Phytoplasma 16SrII-U" Yang et al. 2016 *"''Ca.'' Phytoplasma allocasuarinae" Marcone et al. 2004 *"''Ca.'' Phytoplasma americanum" Lee et al. 2006 *"''Ca.'' Phytoplasma asteris" Lee et al. 2004 *"''Ca.'' Phytoplasma aurantifolia" Zreik et al. 1995 *"''Ca.'' Phytoplasma australiense" Davis et al. 1997 *"''Ca.'' Phytoplasma balanitae" Win et al. 2013 *"''Ca.'' Phytoplasma brasiliense" Montano et al. 2001 *"''Ca.'' Phytoplasma caricae" Arocha et al. 2005 *"''Ca.'' Phytoplasma castaneae" Jung et al. 2002 *"''Ca.'' Phytoplasma cirsii" Safarova et al. 2016 *"''Ca.'' Phytoplasma convolvuli" Martini et al. 2012 *"''Ca.'' Phytoplasma costaricanum" Lee et al. 2011 *"''Ca.'' Phytoplasma cynodontis" Marcone et al. 2004 *"''Ca.'' Phytoplasma fragariae" Valiunas et al. 2006 *"''Ca.'' Phytoplasma fraxini" Griffiths et al. 1999 - cause of Lilac witches'-broom Ash Yellows Witches'-broom

*"''Ca.'' Phytoplasma graminis" Arocha et al. 2005 *"''Ca.'' Phytoplasma hispanicum" Davis et al. 2016 *"''Ca.'' Phytoplasma japonicum" Sawayanagi et al. 1999 *"''Ca.'' Phytoplasma lycopersici" Arocha et al. 2007 *"''Ca.'' Phytoplasma malaysianum" Nejat et al. 2013 *"''Ca.'' Phytoplasma mali" Seemüller and Schneider 2004 *"''Ca.'' Phytoplasma meliae" Fernandez et al. 2016 *"''Ca.'' Phytoplasma omanense" Al-Saady et al. 2008 *"''Ca.'' Phytoplasma oryzae" Jung et al. 2003 *"''Ca.'' Phytoplasma palmicola" Harrison et al. 2014 *"''Ca.'' Phytoplasma phoenicium" Verdin et al. 2003 *"''Ca.'' Phytoplasma pini" Schneider et al. 2005 *"''Ca.'' Phytoplasma pruni" Davis et al. 2013 *"''Ca.'' Phytoplasma prunorum" Seemüller and Schneider 2004 *"''Ca.'' Phytoplasma pyri" Seemüller and Schneider 2004 *"''Ca.'' Phytoplasma rhamni" Marcone et al. 2004 *"''Ca.'' Phytoplasma rubi" Malembic-Maher et al. 2011 *"''Ca.'' Phytoplasma rubi" Franova et al. 2016 *"''Ca.'' Phytoplasma solani" Quaglino et al. 2013 *"''Ca.'' Phytoplasma spartii" Marcone et al. 2004 *"''Ca.'' Phytoplasma sudamericanum" Davis et al. 2012 *"''Ca.'' Phytoplasma tamaricis" Zhao et al *"''Ca.'' Phytoplasma trifolii" Hiruki and Wang 2004 *"''Ca.'' Phytoplasma ulmi" Lee et al. 2004 *"''Ca.'' Phytoplasma vitis" Marzorati et al. 2006 - cause of Flavescence dorée Flavescence dorée 3

*"''Ca.'' Phytoplasma ziziphi" Jung et al. 2003 *"''Ca.'' Piscichlamydia salmonis" Draghi et al. 2004 *"''Ca.'' Planktoluna difficilis" Hahn 2009 *"''Ca.'' Planktomarina temperata" Giebel et al. 2011 *"''Ca.'' Planktophila limnetica" Jezbera et al. 2009 *"''Ca.'' Portiera aleyrodidarum" Thao and Baumann 2004 *"''Ca.'' Prevotella massiliensis" Drancourt et al. 2004 *"''Ca.'' Procabacter acanthamoebae" Horn et al. 2002 *"''Ca.'' Profftia tarda" Toenshoff et al. 2012 *"''Ca.'' Profftia virida" Toenshoff et al. 2012 *"''Ca.'' Protochlamydia amoebophila" Collingro et al. 2005 *"''Ca.'' Puchtella pedicinophila" Fukatsu et al. 2009 *"''Ca.'' Puniceispirillum marinum" Oh et al. 2010 *"''Ca.'' Purcelliella pentastirinorum" Bressan et al. 2009 *"''Ca.'' Regiella insecticola" Moran et al. 2005 *"''Ca.'' Renichlamydia lutjani" Corsaro and Work 2012 *"''Ca.'' Rhabdochlamydia crassificans" Corsaro et al. 2006 *"''Ca.'' Rhabdochlamydia porcellionis" Kostanjšek (morphology matches the description of ''Chlamydia isopodii'') *"''Ca.'' Rhizobium massiliae" Greub et al. 2004 *"''Ca.'' Rhodoluna limnophila" Hahn 2009 *"''Ca.'' Rhodoluna planktonica" Hahn 2009 *"''Ca.'' Rickettsia amblyommii" Labruna et al. 2004 *"''Ca.'' Rickettsia andeanae" Jiang et al. 2005 *"''Ca.'' Rickettsia asemboensis" Jiang et al. 2013 *"''Ca.'' Rickettsia barbariae" Mura et al. 2008 *"''Ca.'' Rickettsia hebeiii" Yaxue et al. 2011 *"''Ca.'' Rickettsia hungarica" Hornok et al. 2010 *"''Ca.'' Rickettsia hoogstraalii" Mattila et al. 2007Mattila, J. T., N. Y. Burkhardt, H. J. Hutcheson, U. G. Munderloh, and T. J. Kurtti. 2007. Isolation of cell lines and a rickettsial endosymbiont from the soft tick ''Carios capensis'' (Neumann) (Acari: Argasidae: Ornithodorinae). ''Journal of Medical Entomology'' 44:1091–1101. "We propose that the isolate RCCE3 be named "''Candidatus'' Rickettsia hoogstraalii" in honor of Harry Hoogstraal who contributed so much to our knowledge of ticks." *"''Ca.'' Rickettsia kellyi" Rolain et al. 2006 *"''Ca.'' Rickettsia kingi" Anstead and Chilton 2013 *"''Ca.'' Rickettsia kotlanii" Sréter-Lancz et al. 2006 *"''Ca.'' Rickettsia liberiensis" Mediannikov et al. 2012 *"''Ca.'' Rickettsia principis" Mediannikov et al. 2006 *"''Ca.'' Rickettsia senegalensis" Mediannikov, Aubadie-Ladrix, and Raoult 2015O. : "We isolated three rickettsial strains, and genetic analysis demonstrated that these strains represent a probable new species, provisionally called Candidatus ''Rickettsia senegalensis'' here." *"''Ca.'' Rickettsia tarasevichiae" Shpynov et al. 2003 *"''Ca.'' Rickettsia tasmanensis" Izzard et al. 2009 *"''Ca.'' Rickettsia vini" Palomar et al. 2012 *"''Ca.'' Riegeria galateiae" Gruber-Vodicka et al. 2011 *"''Ca.'' Riesia pediculicola" Sasaki-Fukatsu et al. 2006 *"''Ca.'' Rohrkolberia cinguli" Kuechler et al. 2011 *"''Ca.'' Roseomonas massiliae" Greub et al. 2004 *"''Ca.'' Ruthia magnifica" Newton et al. 2007 *"''Ca.'' Scalindua arabica" Woebken et al. 2008 *"''Ca.'' Scalindua brodae" Schmid et al. 2003 *"''Ca.'' Scalindua pacifica" Dang et al. 2003 *"''Ca.'' Scalindua profunda" Van De Vossenberg et al. 2008 *"''Ca.'' Scalindua richardsii" Fuchsman et al. 2012 *"''Ca.'' Scalindua sorokinii" Kuypers et al. 2003 *"''Ca.'' Scalindua wagneri" Schmid et al. 2003 *"''Ca.'' Serratia symbiotica" Moran et al. 2005 *"''Ca.'' Similichlamydia latridicola" Stride et al. 2013 *"''Ca.'' Snodgrassella alvi" Martinson et al. 2012 *"''Ca.'' Snodgrassella alvi" Martinson et al. 2012 *"''Ca.'' Sodalis melophagi" Chrudimský et al. 2012 *"''Ca.'' Sodalis pierantonius" Oakeson et al. 2014 *"''Ca.'' Sphaeronema italicum" Kragelund et al. 2006 *"''Ca.'' Stammerula tephritidis" Mazzon et al. 2008 *"''Ca.'' Steffania adelgidicola" Toenshoff et al. 2012 *"''Ca.'' Streptomyces philanthi" Kaltenpoth et al. 2006 *"''Ca.'' Sulcia muelleri" Moran et al. 2005 *"''Ca.'' Sulfurovum sediminum" Park et al. 2012 *"''Ca.'' Symbiothrix dinenymphae" Hongoh et al. 2007 *"''Ca.'' Synechococcus spongiarum" Usher et al. 2004 *"''Ca.'' Tammella caduceiae" Hongoh et al. 2007 *"''Ca.'' Tenderia electrophaga" Eddie et al. 2016 *"''Ca.'' Thermochlorobacter aerophilum" Liu et al. 2012 *"''Ca.'' Thiobios zoothamnicoli" Rinke et al. 2006 *"''Ca.'' Thiodictyon syntrophicum" Peduzzi et al. 2012 *"''Ca.'' Thioglobus singularis" Marshall and Morris 2013 *"''Ca.'' Thiomargarita joergensenii" Salman et al. 2011 *"''Ca.'' Thiomargarita nelsonii" Salman et al. 2011 *"''Ca.'' Thiophysa hinzei" Salman et al. 2011 *"''Ca.'' Thiopilula aggregata" Salman et al. 2011 *"''Ca.'' Thioturbo danicus" Muyzer et al. 2005 *"''Ca.'' Tremblaya phenacola" Gruwell et al. 2010 *"''Ca.'' Tremblaya princeps" Thao et al. 2002 *"''Ca.'' Troglogloea absoloni" Kostanjšek et al. 2013 *"''Ca.'' Uzinura diaspidicola" Gruwell et al. 2007 *"''Ca.'' Vallotia cooleyia" Toenshoff et al. 2012 *"''Ca.'' Vallotia tarda" Toenshoff et al. 2012 *"''Ca.'' Vallotia virida" Toenshoff et al. 2012 *"''Ca.'' Veillonella atypica" Drancourt et al. 2004 *"''Ca.'' Vesicomyosocius okutanii" Kuwahara et al. 2007 *"''Ca.'' Vestibaculum illigatum" Stingl et al. 2004 *"''Ca.'' Vidania fulgoroideae" Gonella et al. 2011 *"''Ca.'' Wolinella africanus" Bohr et al. 2003 *"''Ca.'' Xenohaliotis californiensis" Friedman et al. 2000 *"''Ca.'' Xiphinematobacter americani" Vandekerckhove et al. 2000 *"''Ca.'' Xiphinematobacter brevicolli" Vandekerckhove et al. 2000 *"''Ca.'' Xiphinematobacter rivesi" Vandekerckhove et al. 2000 *"''Ca.'' Zinderia insecticola" McCutcheon and Moran 2010

Former ''candidatus'' taxa

* Armatimonadota, formerly Candidate phylum OP10 * Atribacterota (previously Candidate phylum OP9 or JS1 (phylum), JS1) * Caldisericota, formerly Candidate phylum OP5 * Elusimicrobiota, formerly Termite Group 1 * Ignavibacteriota (previously Candidate phylum ZB1) * Lentisphaerota, formerly vadinBE97 * Nitrospinota

References

{{DEFAULTSORT:Candidatus Candidatus taxa Bacterial nomenclature Bacteria taxa Bacteriology Taxonomy (biology) Taxonomic lists Bacterial taxonomy Biological classification Lists of bacteria, Candidatus