Species (1.675)
- Cyrtohymena ferruginea Stein 1859
- Kerona sannio Müller 1773
- Oxytricha formosa Alekperov 1984
- Kerona erosa Müller 1786
- Rhabdotricha terricola Greeff 1888
- Cyrtohymena macrostoma Groliere 1975
- Kerona corona Müller 1786
- Rigidocortex octonucleatus Foissner 1988
- Rubrioxytricha haematoplasma Blatterer & Foissner 1990
- Rubrioxytricha ferruginea Stein 1859
- Euplotes baleatus Dujardin 1842
- Euplotes gloriosa
- Euplotes muscicula
- Euplotes nat. nonZR
- Holostichides dumonti Foissner 2000
- Opisthotricha sordis Lepsi 1965
- Oxytricha euglenivora Kahl 1932
- Cyrtohymena marina Kahl 1932
- Cyrtohymena simplex Dragesco 1966
- Oxytricha fimbriata Müller 1786
- Kerona cypris Müller 1773
- Kerona dubius Fromentel 1876
- Kerona oblonga Dumas 1929
- Kerona polymorphum Foissner 1979
- Kerona rastellum Müller 1786
- Sterkiella admirabilis Foissner 1980
- Sterkiella quadrinucleatus Sick 1933
- Sterkiella tricirrata Buitkamp 1977
- Stichotricha cornuta Dumas 1858 ssp. non
- Stichotricha cornuta Claparède & Lachmann 1858
- Stylonychia harbinensis Feng, Gu & Zhang 1990
- Stylonychia muscorum Kahl 1932
- Kerona silurus Müller 1786
- Engelmanniella kahli
- Hemiurosoma similis Foissner 1982
- Oxitricha joblottii Bory 1824
- Gastrostyla steini
- Opistotricha macrostoma Dragesco 1972
- Stylonchia curvata
- Stylonethes sterkii Garnjobst 1934
- Stylonichia histrio
- Stylonichia notophora
- Stylonichia mytilus
- Stylonichia putrina
- Opistotricha terricola Gellert 1957
- Stylonichia vorax
- Stylonychia balatonica
- Stylonichya mytilus Ehrenberg
- Stylonychia complanatus
- Stylonychia appendiculatus Ehrenberg 1838
- Stylonychia fissieta Conn 1905
- Stylonychia kahli Dragesco 1966
- Stylonychia makrostyla Sterki 1878
- Stylonychia microstoma
- Stylonychia minimus
- Stylonychia ovalis Dragesco 1966
- Pleurotricha grandis
- Stylonychia mytilus Müller 1773 ssp. mytilus
- Laurentiella acuminata
- Stilonichia pulchra
- Sterkiella similis Buitkamp 1977 ssp. tricirrata
- Stylonychia parallela
- Stylonychia sphagni
- Stylonychia similis
- Opisthotricha paraholophila Wang & Nie 1935
- Steinia dubia Gellert 1956
- Steinia bivacuolata
- Steinia fenestrata Lepsi 1957
- Steinia feruginea Stein 1859
- Steinia simplex Dragesco 1966
- Oxytricha mystacea Stein 1859
- Gonostomum parvum Lepsi 1947
- Histriculus polycirratus Agamliev 1978
- Cyrtohymena fenestrata Lepsi 1957
- Histriculus minimus
- Bakuella marina Agamaliev & Alekperov 1976
- Histriculus tricirratus Buitkamp 1977
- Histriculus acuminatus Maskell 1886
- Oxytricha lundi Dragesco 1970
- Histriculus sphagni
- Holosticha setigera
- Gastrostyla parasteinii Small & Lynn 1985
- Allotricha antarctica Berger 1999
- Amphisiella oscensis
- Amphisiella perisincirra
- Cerona mytilus
- Cerona lanceolata
- Cerona histrio
- Ceratidium cuneatum
- Cladotricha koltzowii Gajevskaja 1925
- Euplotopsis labiata Ruinen 1938
- Plagiotricha affinis Stein 1882
- Plagiotricha strenua Engelmann
- Pleurotricha flexilis
- Pleurotricha echinata Stein 1859
- Pleurotricha indica Ammermann, Sapra & Schlegel 1987
- Pleurotricha macrostoma Dragesco 1970
- Pleurotricha monilata
- Pleurotricha planensis Fernandez-Leborans 1984
- Opistotricha terrestris Horvath