treponema primitia treponema primitia treponema primitia is a bacterium, the first termite gut spirochete to be isolated, together with treponema azotonutricium. treponema primitia scientific classification domain: bacteria phylum: spirochaetota class: spirochaetia order: spirochaetales family: treponemataceae genus: treponema species: t. primitia binomial name treponema primitiagraber et al. 2004