In species where the trophozoites develop extracellularly, they are attached by an epimerite.
3.
The trophozoites have lost the apical complex and instead possess a mucron ( aseptate species ) or an epimerite ( septate species ).
4.
In the septate ( or cephalate ) species the body is divided into at least 2 parts : a posterior portion which contains the nucleus ( the deutomerite ) and an anterior portion ( the protomerite ) which contains the epimerite.
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