ixorheis ixorheis ixorheis is a genus of parasitic alveolates in the phylum apicomplexa. ixorheis scientific classification domain: eukaryota (unranked): sar (unranked): alveolata phylum: apicomplexa class: conoidasida order: ixorheorida family: ixorheidae genus: ixorheis species ixorheis psychropotae taxonomy ixorheis is currently the only genus in the family ixorheidae which in its turn is the sole member of the order ixorheorida. there is only one currently recognised species in this genus - ixorheis psychropotae history the species was isolated from the digestive tract of the sea cucumber psychropotes longicauda. description this species has been reported only once and little is known about it. gametogony is absent but both merogony and sporogony occur.