Helmutkoenigia isoptericolens (Dröge et al. 2008) Brune et al. 2022 Universal Root Woese et al. 1990 Bacteria (None 2015) Woese et al. 1990 Spirochaetota corrig. Garrity and Holt 2021 Spirochaetes (sic) Garrity and Holt 2021 non Spirochaetes Cavalier-Smith 2002 Spirochaetia (Cavalier-Smith 2002) Paster 2020 Spirochaetales Buchanan 1917 (Approved Lists 1980) emend. Hördt et al. 2020 Breznakiellaceae Brune et al. 2022 Helmutkoenigia Brune et al. 2022 Helmutkoenigia isoptericolens (Dröge et al. 2008) Brune et al. 2022 Helmutkoenigia Brune et al. 2022 Treponema isoptericolens Dröge et al. 2008 Helmutkoenigia isoptericolens (Dröge et al. 2008) Brune et al. 2022 Dröge S. Rachel R. Radek R. König H. Treponema isoptericolens sp. nov., a novel spirochaete from the hindgut of the termite Incisitermes tabogae. 2008 58 5 1079 1083 International Journal of Systematic and Evolutionary Microbiology Int J Syst Evol Microbiol 1466-5026 1466-5034 10.1099/ijs.0.64699-0 18450692 Brune A. Song Y. Oren A. Paster B.J. A new family for 'termite gut treponemes': description of Breznakiellaceae fam. nov., Gracilinema caldarium gen. nov., comb. nov., Leadbettera azotonutricia gen. nov., comb. nov., Helmutkoenigia isoptericolens gen. nov., comb. nov., and Zuelzera stenostrepta gen. nov., comb. nov., and proposal of Rectinemataceae fam. nov. 2022 72 5 International Journal of Systematic and Evolutionary Microbiology Int J Syst Evol Microbiol 1466-5026 1466-5034 10.1099/ijsem.0.005439 35639582