spirochaeta spirochaeta spirochaeta is a genus of bacteria classified within the phylum spirochaetota. spirochaeta a microscopic photograph of fluorescent-stained spirochaeta americana scientific classification domain: bacteria phylum: spirochaetota class: spirochaetia order: spirochaetales family: spirochaetaceae genus: spirochaetaehrenberg 1835 non turczaninow 1851 type species spirochaeta plicatilisehrenberg 1835 species see text synonyms "ehrenbergia" gieszczykiewiez 1939 non martius 1827 non sprengel 1820 phylogeny 16s rrna based ltp_12_2021 gtdb 07-rs207 by genome taxonomy database spirochaetales exilispira "rectinemataceae" treponemataceae sphaerochaetaceae spirochaeta thermophila sediminispirochaeta marispirochaeta pleomorphochaeta bullifex sphaerochaeta spirochaetaceae spirochaeta lutea salinispira spirochaeta s. africana s. asiatica s. dissipatitropha spirochaeta halophila alkalispirochaeta spirochaeta spirochaeta isovalerica spirochaeta psychrophila species‑group 2 oceanispirochaeta spirochaeta cellobiosiphila thiospirochaeta spirochaeta aurantia borreliaceae spirochaetia "borreliales" borreliaceae wrbn01 wrbn01 "entomospira" dsm‑17781 dsm‑17781 spirochaeta cellobiosiphila spirochaetales_e dsm‑19205 thiospirochaeta spirochaetaceae_b spirochaeta isovalerica oceanispirochaeta spirochaetales_a spirochaetaceae_a spirochaeta thermophila dsm‑27196 "salinispiraceae" spirochaeta lutea salinispira dsm‑8902 spirochaeta africana "alkalispirochaetaceae" alkalispirochaeta jc444 "marispirochaetaceae" dsm‑16054 "sediminispirochaetaceae" "sphaerochaetales" sphaerochaetaceae "treponematales" "rectinemataceae" breznakiellaceae treponemataceae taxonomy the currently accepted taxonomy is based on the list of prokaryotic names with standing in nomenclature (lpsn) and national center for biotechnology information (ncbi). spirochaeta africana zhilina et al. 1996 spirochaeta asiatica zhilina et al. 1996 spirochaeta aurantia vinzent 1926 ex canale-parola 1980 spirochaeta cellobiosiphila breznak & warnecke 2008 spirochaeta dissipatitropha pikuta et al. 2009 spirochaeta halophila greenberg & canale-parola 1977 spirochaeta isovalerica harwood and canale-parola 1983 spirochaeta lutea shivani et al. 2015 spirochaeta plicatilis ♦ ehrenberg 1835 (type sp.) spirochaeta psychrophila miyazaki et al. 2014 "spirochaeta taiwanensis" chi-yu & cai-ji 2004 spirochaeta thermophila aksenova et al. 1992 spirochaeta xylanolyticus yeh & huang 2004 notes: ♦ type strain lost or not available