thiriotiidae thiriotiidae the thiriotiidae are a family of parasitic alveolates in the phylum apicomplexa. thiriotiidae scientific classification domain: eukaryota (unranked): sar (unranked): alveolata phylum: apicomplexa class: conoidasida subclass: gregarinasina order: eugregarinorida suborder: aseptatorina family: thiriotiidae genera thiriotia taxonomy there is one genus in this family - thiriotia. the type species is thiriotia pisae. other species in this genus include thiriotia pugettiae. history this genus was created by desportes, vivarès and théodoridès in 1977. description