Percentage taxon composition of endoparasite diversity pie diagram shown by higher classification of bothprotozoa and helminths occurring in subterranean rodents (Family Ctenomyidae) in the southern Neotropical region. All records of parasites presented were derived from a review of the literature published from 1931 through 2021. Approximately 67% of the total endoparasite fauna of these rodents consists of Nemata, followed by Protozoa (19%), and Cestoda (14%).