Published as part of Nana, Paul Alain, Tchakonte, Simeon, Mama, Anselme Crepin, Onana, Fils Mamert, Fokam, Zephyrin, Ngassam, Pierre, Masseret, Estelle, Nola, Moïse & Sime-Ngando, Telesphore, 2022, Four new species of Hysterocinetida (Protozoa: Ciliophora) from the digestive tract of earthworms collected to the lower Nyong estuary (South Coast, Cameroon), pp. 233-244 in Zootaxa 5194 (2) on page 235, DOI: 10.11646/zootaxa.5194.2.5, http://zenodo.org/record/7147267

Genus Preptychostomum Puytorac, 1968a Preptychostomum ciliates are usually globular in shape. They are characterized by a large oral cavity, an anterior bare area more or less developed without skeletal fibers. The elongated macronucleus perpendicular to the anteroposterior axis of the cell is surmounted by a bulky micronucleus. There is the presence of a posterior pulsatile vacuole. In the genus Preptychostomum, we describe a new species: P. donedaensis n. sp.

{"references": ["Puytorac, P. de (1968 a) Sur quelques Cilies Hysterocinetidae endoparasites de Vers Oligichetes au Gabon. Revision de la famille. Biologia Gabonica, 4, 241 - 279."]}