The phylum Elusimicrobia, previously known as "Termite Group 1", has been shown to be widespread in different ecosystems like marine environment, sewage sludge, contaminated sites and soils. The high abundance of 'Elusimicrobia' representatives is only evidenced for the lineage of symbionts found in termites.
The first organism to be cultured was Elusimicrobium minutum; however, other two species have been partially described and placed in a separate class, known as Endomicrobia.
The phylogeny is based on 16S rRNA-based LTP release 123 by 'The All-Species Living Tree' Project.
The currently accepted taxonomy is based on the List of Prokaryotic names with Standing in Nomenclature (LPSN) and National Center for Biotechnology Information (NCBI)
Phylum Elusimicrobia Geissinger et al. 2010 [Elusimicrobaeota Oren et al. 2015] (Termite Group 1)
Class Elusimicrobia Geissinger et al. 2010
Order Elusimicrobiales Geissinger et al. 2010
Family Elusimicrobiaceae Geissinger et al. 2010
Genus Elusimicrobium Geissinger et al. 2010
Species Elusimicrobium minutum Geissinger et al. 2010
Class Endomicrobia ♠ Stingl et al. 2005 emend. Zheng et al. 2016
Order Endomicrobiales ♠ Zheng et al. 2016
Family Endomicrobiaceae ♠ Zheng et al. 2016
Genus "Endomicrobium" ♠ Zheng et al. 2016 ["Candidatus Endomicrobium" Stingl et al. 2005]
Species "E. proavitum" ♠ Zheng et al. 2016 ["Endomicrobium proavitum" Zheng & Brune 2015]
Species "Ca. E. pyrsonymphae" ♠ Stingl et al. 2005
Species "Ca. E. trichonymphae" ♠ Stingl et al. 2005
Class "Blastocatellia" ♠ Pascual et al. 2015 [Acidobacteria subdivision 4]
Order "Blastocatellales" ♠ Pascual et al. 2015
Genus ?Chloracidobacterium Tank & Bryant 2015 ["Candidatus Chloracidobacterium" Bryant et al. 2007]
Species Chloracidobacterium thermophilum Tank & Bryant 2015 ["Candidatus Chloracidobacterium thermophilum" Bryant et al. 2007]
Family Pyrinomonadaceae Wüstet al. 2016
Genus Arenimicrobium Wüstet al. 2016
Species Arenimicrobium luteum Wüstet al. 2016
Genus Brevitalea Wüstet al. 2016
Species B. aridisoli Wüstet al. 2016
Species B. deliciosa Wüstet al. 2016
Genus Pyrinomonas Crowe et al. 2014
Species Pyrinomonas methylaliphatogenes Crowe et al. 2014
Family "Blastocatellaceae" ♠ Pascual et al. 2015
Genus Aridibacter Huber et al. 2014
Species A. kavangonensis Huber et al. 2014
Species A. famidurans Huber et al. 2014
Genus Blastocatella Foesel, Rohde & Overmann 2013
Species Blastocatella fastidiosa Foesel, Rohde & Overmann 2013
Genus ?Stenotrophobacter" ♠ Pascual et al. 2015
Species "S. namibiensis" ♠ Pascual et al. 2015
Species "S. roseus" ♠ Pascual et al. 2015
Species "S. terrae" ♠ Pascual et al. 2015
Genus ?"Tellurimicrobium" ♠ Pascual et al. 2015
Species "Tellurimicrobium multivorans" ♠ Pascual et al. 2015
Notes: ♠ Strains found at the National Center for Biotechnology Information (NCBI) but not listed in the List of Prokaryotic names with Standing in Nomenclature (LSPN)
