histiona histiona histiona is a genus of excavata. histiona four jakobid species, showing groove and flagella: jakoba libera (ventral view), stygiella incarcerata (ventral view), reclinomonas americana (dorsal view), and histiona aroides (ventral view) scientific classification phylum: excavata class: jakobea order: jakobida family: jakobidae genus: histionavoigt 1902 species h. aroides pascher 1943 h. zachariasi voigt 1902 h. velifera (voigt 1901) pascher 1943 synonyms zachariasia voigt 1901 non lemmermann 1895 it is a jakobid.