Species (89)
- Pleuronema cyclidium sensu Maskell 1886
- Pleuronema cyclidium Claparède & Lachmann 1859
- Cercaria cyclidium
- Spathidium cyclidium
- Trichoda cyclidium
- Acomia cyclidium
- Glaucoma cyclidium Penard 1922
- Mystacodella cyclidium
- Cyclidium elongatum Schewiakoff 1889
- Cyclidium glaucoma Müller 1773 ssp. glaucoma
- Cyclidium arboreum
- Cyclidium abscissum
- Cyclidium arborum
- Cyclidium bergeri
- Cyclidium bulla
- Cyclidium chlorelligera Lepsi 1957
- Cyclidium claprèdi
- Cyclidium citrulus Cohn 1866
- Cyclidium curvata
- Cyclidium cytrulus
- Cyclidium crassum
- Cyclidium distortum
- Cyclidium hepatrichum Schewiakoff 1893
- Cyclidium limetosum
- Cyclidium glaucoma Schewiakoff 1889 ssp. elongatum
- Cyclidium nucleus
- Cyclidium setiger
- Cyclidium saltans
- Cyclidium sphagnetorum Sramek-Husek
- Cyclidium stercoris Powers 1935
- Cyclidium citrullus Cohn 1866
- Cyclidium citrellus
- Cyclidium nodulosum
- Cyclidium porcatum
- Cyclidium lineatum
- Cyclidium rostratum
- Cyclidium dilectatissimum
- Cyclidium bonneti
- Cyclidium galucoma
- Cyclidium varibonneti Song 2000
- Cyclidium sp.
- Cyclidium centrale Smith 1897
- Cyclidium chlorelligerum Lepsi 1957
- Cyclidium ecaudatum Liebmann 1936
- Cyclidium curvatum Mansfeld 1922
- Cyclidium fuscum Kahl 1928
- Cyclidium flagellatum Kahl 1926
- Cyclidium gemmuliferum Penard 1922
- Cyclidium glaucoma Müller 1773
- Cyclidium granulosum Kahl 1931
- Cyclidium helgolandicum Mansfeld 1922
- Cyclidium heptatrichum Schewiakoff 1893
- Cyclidium lanuginosum Penard 1922
- Cyclidium instabile Clark 1866
- Cyclidium lentiforme Hemprich & Ehrenberg 1831
- Cyclidium longatum Fromentel 1876
- Cyclidium litomesum Stokes 1884
- Cyclidium marinum Borror 1963
- Cyclidium margaritaceum Ehrenberg 1831
- Cyclidium libellus Kahl 1926
- Cyclidium milium Müller 1773
- Cyclidium obliquum Kahl 1926
- Cyclidium muscicola Kahl 1931
- Cyclidium amoyensis Nie 1934
- Cyclidium borrori Small & Lynn 1985
- Cyclidium brandoni Kahl 1931
- Cyclidium caudens Kahl 1928
- Cyclidium candens Kahl 1928
- Cyclidium citrullus Cohn 1866
- Cyclidium oblongum Kahl 1931
- Cyclidium oligotrichum Kahl 1928
- Cyclidium opisthostoma Grandori & Grandori 1934
- Cyclidium pediculus Müller 1773
- Cyclidium paucisetum Lepsi 1926
- Cyclidium planum Hemprich & Ehrenberg 1831
- Cyclidium pellucidum Kahl 1931
- Cyclidium similans Kahl 1928
- Cyclidium plouneouri Dragesco 1963
- Cyclidium singulare Kahl 1926
- Cyclidium terricola Kahl 1931
- Cyclidium veliferum Kahl 1933
- Cyclidium spirale Kahl 1926
- Cyclidium versatile Penard 1922
- Cyclidium viride Fromentel 1876
- Cyclidium elongatum Claparède & Lachmann 1859
- Cyclidium radians
- Cyclidium nigricans Fromentel ?
- Cyclidium nigricans Kahl 1928
- Cyclidium paradoxum Bürger 1908