Four new species of Hysterocinetida (Protozoa: Ciliophora) from the digestive tract of earthworms collected to the lower Nyong estuary (South Coast, Cameroon) Author Nana, Paul Alain Department of Oceanography, Institute of Fisheries and Aquatic Sciences, University of Douala, P. O. Box 7236, Douala, Cameroon Laboratory of Natural Resources and Environmental Management, Faculty of Science, University of Buea, P. O. Box 063, Buea, Cameroon Author Tchakonte, Simeon Author Mama, Anselme Crepin Department of Oceanography, Institute of Fisheries and Aquatic Sciences, University of Douala, P. O. Box 7236, Douala, Cameroon Laboratory of Natural Resources and Environmental Management, Faculty of Science, University of Buea, P. O. Box 063, Buea, Cameroon Author Onana, Fils Mamert Department of Aquatic Ecosystems Management, Institute of Fisheries and Aquatic Sciences, University of Douala, P. O. Box 7236, Douala, Cameroon Author Fokam, Zephyrin Department of Biology, Higher Teacher Training College, University of Bamenda, P. O. Box 39, Bamenda, Cameroon Author Ngassam, Pierre Laboratory of Hydrobiology and Environment, Faculty of Science, University of Yaounde 1, P. O. Box 812, Yaoundé, Cameroon MARBEC, University of Montpellier, IRD, Ifremer, CNRS, Montpellier, France Author Masseret, Estelle Author Nola, Moïse Laboratory of Hydrobiology and Environment, Faculty of Science, University of Yaounde 1, P. O. Box 812, Yaoundé, Cameroon MARBEC, University of Montpellier, IRD, Ifremer, CNRS, Montpellier, France Author Sime-Ngando, Telesphore Laboratory Microorganisms: Genome and Environment, UMR CNRS 6023, Clermont Auvergne University, P. O. Box 80026, 63178 Aubière Cedex, France text Zootaxa 2022 2022-10-05 5194 2 233 244 journal article 158404 10.11646/zootaxa.5194.2.5 95c82f35-8fd9-470d-9133-66ba0e395806 1175-5326 7147267 6B512F26-90A8-44D6-A2A8-CDAA9C2D776D Genre Proptychostomum Ngassam & Grain, 1997 We have found a new species in this genus.