Species (108)
- Protocyclidium citrullus Cohn 1866
- Protocyclidium sphagnetorum Sramek-Husek 1949
- Cristigera pleuronemoides Roux 1899
- Cristigera pleuronemoides sensu Penard 1922
- Cristigera pleuronemoides Roux 1901
- Cyclidium nigricans Fromentel ?
- Cyclidium nigricans Kahl 1928
- Cyclidium paradoxum Bürger 1908