Species (24)
- Pseudourostyla nova Wiackowski 1988
- Metaurostyla magna Alekperov 1984
- Metaurostyla raikovi Alekperov 1984
- Hemicylcliostyla sphagni Stokes 1886
- Hemicylclostyla trichota
- Trichototaxis multinucleatus Burkovsky 1970
- Pseudourostyla levis Takahashi 1973
- Hemicycliostyla lacustris Gellert & Tamas 1958
- Pseudouroleptus raikovi Alekperov 1984
- Pseudouroleptus magna Alekperov 1984
- Hemicylcliostyla concha Entz 1884
- Oxytricha urostyla Claparède & Lachmann 1858
- Hemicycliostyla sphagni Stokes 1886
- Hemicycliostyla trichota Stokes 1886
- Hemicycliostyla marina Kahl 1932
- Pseudourostyla cristata Jerka-Dziadosz 1964
- Pseudourostyla urostyla Claparède & Lachmann 1858
- Pseudourostyla muscorum Kahl 1932
- Pseudourostyla franzi Foissner 1987
- Trichototaxis aeruginosa Foissner 1980
- Trichototaxis pulchra Borror 1972
- Trichototaxis rubentis Sarmiento & Guerra 1960
- Trichototaxis villaensis Sarmiento & Guerra 1960
- Trichototaxis stagnatilis Stokes 1891