treponema treponema treponema is a genus of spiral-shaped bacteria. the major treponeme species of human pathogens is treponema pallidum, whose subspecies are responsible for diseases such as syphilis, bejel, and yaws. treponema carateum is the cause of pinta. treponema paraluiscuniculi is associated with syphilis in rabbits. treponema succinifaciens has been found in the gut microbiome of traditional rural human populations. treponema treponema pallidum spirochaetes scientific classification domain: bacteria phylum: spirochaetota class: spirochaetia order: spirochaetales family: treponemataceae genus: treponemaschaudinn 1905 emend. abt, göker & klenk 2013 type species treponema pallidum(schaudinn & hoffmann 1905) schaudinn 1905 species treponema azotonutricium treponema bryantii treponema carateum (pinta-causing treponema) treponema denticola treponema isoptericolens treponema lecithinolyticum treponema maltophilum treponema pallidum treponema paraluiscuniculi treponema pertenue treponema primitia treponema socranskii treponema succinifaciens treponema vincentii see text synonyms "spironema" vuillemin 1905 non klebs 1892 non leger & hesse 1922 non rafinesque 1838 non hochst. 1842 non lindley 1840 non meek 1864 "microspironema" stiles & pfender 1905 phylogeny the currently accepted taxonomy is based on the list of prokaryotic names with standing in nomenclature (lpsn) and national center for biotechnology information (ncbi). 16s rrna based ltp_12_2021 gtdb 07-rs207 by genome taxonomy database treponema t. caldarium t. stenostreptum (zuelzer 1912) abt, göker & klenk 2013 t. isoptericolens dröge et al. 2008 t. azotonutricium t. primitia t. zuelzerae veldkamp 1960 ex canale-parola 1980 t. medium t. phagedenis t. denticola t. pedis t. putidum t. brennaborense t. lecithinolyticum t. maltophilum t. pectinovorum t. bryantii t. rectale t. berlinense t. porcinum t. succinifaciens cwyk and canale-parola 1981 t. ruminis t. saccharophilum t. amylovorum wyss et al. 1997 t. parvum t. socranskii t. s. paredis smibert et al. 1984 t. s. buccale smibert et al. 1984 t. s. socranskii smibert et al. 1984 breznakiellaceae gracilinema caldarium (pohlschröder, leschine & canale-parola 1995) brune et al. 2022 breznakiella homolactica song et al. 2022 leadbettera azotonutricia (graber et al. 2004) brune et al. 2022 treponema primitia graber, leadbetter & breznak 2004 treponemataceae "ca. gallitreponema excrementavium" gilroy et al. 2021 "ca. avitreponema avistercoris" gilroy et al. 2021 treponema t. pedis evans et al. 2009 t. denticola (flügge 1886) brumpt 1925 ex chan et al. 1993 t. putidum wyss et al. 2004 t. medium ♦ umemoto et al. 1997 "t. vincentii" (blanchard 1906) brumpt 1922 ex smibert 1984 t. pallidum (schaudinn & hoffmann 1905) schaudinn 1905 t. phagedenis (noguchi 1912) brumpt 1922 ex kuhnert et al. 2020 s.s. treponema t. lecithinolyticum wyss et al. 1999 t. maltophilum wyss et al. 1996 t. brennaborense schrank et al. 1999 "ca. t. excrementipullorum" gilroy et al. 2021 t. berlinense nordhoff et al. 2005 t. pectinovorum smibert and burmeister 1983 t. ruminis newbrook et al. 2017 t. saccharophilum paster and canale-parola 1986 "t. zioleckii" piknova et al. 2008 t. rectale staton et al. 2017 t. parvum wyss et al. 2001 t. socranskii smibert et al. 1984 t. bryantii stanton and canale-parola 1980 t. porcinum nordhoff et al. 2005 species‑group 2 s.s. unassigned species: treponema calligyrum noguchi 1913 treponema carateum brumpt 1939 (pinta-causing treponema) "ca. treponema faecavium" gilroy et al. 2021 treponema paraluisleporis lumeij et al. 1994 treponema paraluiscuniculi ♦ (jacobsthal 1920) smibert 1974 treponema pertenue ♦ (castellani 1905) castellani & chalmers 1910 "ca. treponema suis" molbak et al. 2006 treponema refringens (schaudinn and hofmann 1905) castellani and chalmers "treponema scoliodonta" (hoffmann 1920) noguchi 1928 ex smibert 1984 "ca. treponema teratonymphae" noda et al. 2018 notes: ♦ type strain lost or not available the species treponema hyodysenteriae and treponema innocens have been reclassified into serpulina hyodysenteriae and serpulina innocens.