Utz, L.R.P., Farias, A.C.S.R., Freitas, E.C. and Araújo, G.O.D. 2014. Description of Epistylis riograndensis n.sp. (Ciliophora: Peritrichia) found in an artificial lake in Southern Brazil. Zootaxa. 3869, 5 (Oct. 2014), 557–564. DOI:https://doi.org/10.11646/zootaxa.3869.5.5.