A new entodiniomorphid ciliate species, Gorilloflasca africana n. g., n. sp. was described from the Virunga mountain gorillas, Gorilla beringei beringei, in Rwanda. It is characterized by a flask-shaped body, a long tubular vestibulum, a round frontal lobe, a large posterior cavity, an ellipsoidal or peanut-shaped macronucleus and a single contractile vacuole. G. africana has the adoral and the vestibular ciliary zones in the buccal area. The adoral ciliary zone is non-retractable, encircling the vestibular opening. The vestibular ciliary zone extends posteriorly in the vestibulum. The somatic ciliary zones are the cavity ciliary zone in the posterior cavity along the ventral side of its opening and two longitudinal ciliary zones on the dorsal body surface. The buccal infraciliary bands of G. africana are a C-shaped adoral polybrachykinety, a stick-shaped vestibular kinety band, and paralabial kineties. The anterior region of the vestibular kinety band is composed of short kineties whereas, kineties in the remaining region are longitudinal. The somatic infraciliary bands are a cavity polybrachykinety and two longitudinal polybrachykineties. Gorilloflasca is a member of the family Blepharocorythidae based on the non-retractable adoral ciliary zone, the frontal lobe, the large posterior cavity and the vestibular longitudinal kineties.
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