septatorina septatorina septatorina is a suborder of parasitic alveolates of the phylum apicomplexa septatorina scientific classification domain: eukaryota (unranked): sar (unranked): alveolata phylum: apicomplexa class: conoidasida subclass: gregarinasina order: eugregarinorida suborder: septatorina families and superfamilies blabericolidae fusionicae gregarinicae porosporicae stenophoricae stylocephaloidea taxonomy there are five superfamilies and one family in this suborder: superfamilies fusionicae, gregarinicae, porosporicae, stenophoricae and stylocephaloidea; and family blabericolidae. history this taxon was created in 1885 by ray lankester. description the defining morphological feature of this taxon is the presence of septum dividing the gamont or trophozoite into a protomerite and deutomerite. the septum may not always be visible by light microscopy. species in this taxon also have an epimerite. species in this taxon infect invertebrates and especially arthropods.