"Treponema pallidum var. cuniculi" Klarenbeek 1921 Dataset NCBI Taxonomy Classification phylum Spirochaetota class Spirochaetia order Spirochaetales family Treponemataceae genus Treponema species Treponema paraluiscuniculi Name Homonyms Treponema pallidum var. cuniculi "Treponema pallidum var. cuniculi" Klarenbeek 1921