Species (997)
- Oxytricha macrostyla Wrzesniowski 1870
- Steinia macrostoma Groliere 1975
- Stylonichia labiata Dumas 1930
- Oxytricha lanceolata Shibuya 1930
- Kerona larvoides Bory 1824
- Oxytricha muscorum Kahl 1932
- Oxytricha muscorum Kahl 1932
- Tachysoma humicola Foissner 1998 ssp. longisetae
- Trichoda erosa Müller 1786
- Oxytricha gigantea Horvath 1933
- Tricholeptus aculeatus Longhi 1895 ssp. tetraculeatus
- Laurentia acuminata Fedriani, Martin & Perez-Silva 1976
- Perisincirra buitkampi
- Onychodromus acuminatus
- Gonostomum ambiguum
- Stichochaeta affinis Stein
- Oxytricha fissiseta Claparède & Lachmann 1858
- Oxitricha gallina Müller 1786
- Steinia candens Gellert 1942 ssp. depressa
- Oxytricha bimembranata Shibuya 1929
- Stylonichia octonistylus Dumas 1930
- Opisthostyla sertularium Kent 1881
- Opisthostyla sertularium André 1910 ssp. amphiurae
- Oxytricha caudata Stokes 1887
- Stylonychia mytilus Sterki 1878 ssp. pusilla
- Oxytricha mytilus Ehrenberg 1838
- Oxytricha muscorum Kahl 1932
- Opisthostyla sertularium Kent 1881 ssp. sertularium
- Urosoma pelagica
- Kerona silurus ssp. silurus
- Steinia candens Kahl 1932 ssp. candens
- Sterkiella similis ssp. similis
- Tricholeptus aculeatus ssp. aculeatus
- Onychodromus grandis Stein 1859 ssp. grandis
- Opisthotricha parallela Engelmann 1862 ssp. parallela
- Oxytricha candens ssp. candens
- Oxytricha fastigata ssp. fastigata
- Oxytricha pellionella Müller 1786 ssp. pellionella
- Cyrtohymena aspoecki Foissner 2004
- Neokeronopsis aurea Foissner ßß
- Urosoma giganteum Horváth 1933
- Oxytricha arabica Foissner neu
- Erimophrya monostyla Foissner neu
- Stylonychia harbinensis Shi & Ammermann 2004
- Coniculostomum monilata Dragesco & Njine 1971
- Cossothigma dubia Dragesco 1954
- Lamtostyla raptans Hemberger 1985
- Laurentiella strenua Dingfelder 1962
- Laurosticha monilata Dragesco & Njiné 1971
- Lamtostyla longa Hemberger 1985
- Lamtostyla lamottei Buitkamp 1977
- Australocirrus oscitans Blatterer & Foissner 1988
- Australocirrus octonucleatus Foissner 1988
- Cerona pustulata Perty 1852
- Ceratidium cunetum Ehrenberg 1830
- Pleurotricha multinucleata Dragesco 2003
- Cyrtohymena candens Kahl 1932 ssp. candens
- Cyrtohymena australis Foissner 1995
- Cyrtohymena balladynula Kahl 1932
- Cyclidium pediculus Müller 1773
- Cyrtohymena candens Gellert 1942 ssp. depressa
- Cyrtohymena citrina Berger & Foissner 1987
- Cyrtohymena gracilis Kahl 1932
- Cyrtohymena dubia Gellert 1956
- Cyrtohymena inquieta Stokes 1887
- Cyrtohymena muscorum Kahl 1932
- Cyrtohymena primicirrata Berger & Foissner 1987
- Cyrtohymena granulata Kahl 1932
- Cyrtohymena tetracirrata Gellert 1942
- Cyrtohymena sphagnicola Foissner 1989
- Cyrtohymena quadrinucleata Dragesco & Njiné 1971
- Drepanina falcata Savi 1913
- Dipleurostyla acuminata Roux 1899
- Dipleurostyla tricornis Tagliani 1922
- Micromitra brevicauda Kahl 1933
- Micromitra retractilis Claparède & Lachmann 1858
- Notohymena rubescens Blatterer & Foissner 1988
- Nothopleurotricha setifera Diesing 1866
- Notohymena australis Foissner & O'Donoghue 1990
- Notohymena n.sp.
- Notohymena antarctica Foissner 1996
- Notohymena selvatica Hemberger 1985
- Opisthotricha muscorum Kahl 1932
- Opisthotricha ovata Kahl 1932
- Opisthotricha euglenivora Kahl 1932
- Opisthotricha parallella Engelmann 1862
- Opisthotricha procera Kahl 1932
- Opisthotricha parallela Engelmann 1862
- Opisthotricha similis Engelmann 1862
- Opisthotricha sphagni Kahl 1932
- Opisthotricha terrestris Horváth 1956
- Opisthotricha terricola Gellert 1957
- Onychodromopsis flexilis Stokes 1887
- Onychodromus quadricornutus Foissner, Schlegel & Prescott 1987
- Oxytricha aeruginosa Wrzesniowski 1870
- Oxytricha acuminata Stokes 1887
- Oxytricha affinis Stein 1859
- Oxytricha agilis Engelmann 1862
- Oxytricha alba Fromentel 1874
- Oxytricha ambigua Perty/Dujardin 1852