Species (15.149)
- Speleoscyphidia husmanni
- Colpoda stein
- Sphaerophrya doliolum
- Sphaerophrya hydrostatica
- Sphaerophrya natans
- Sphaerophrya sol Lauterborn 1901
- Sphaerophrya paramaeciorum
- Rondostoma gargamellae
- Vorticella apuntata
- Solenophrya calyciformis
- Solenophrya bulbacea
- Solenophrya dubia
- Solenophrya micraster
- Sphenophrya sphaeri
- Spinarcella batiformis
- Licnophora rosa Van As & Van As 2001
- Spirostomum virescens
- Spiroxystonellites saetosus Knauer 1969
- Spongiocirrhus stentoreus Bullington 1940
- Stammeriella kahli Wenzel 1953
- Sphaerophrya stentorea
- Sphaerophrya stylonychiae
- Frontonia roqueae Dragesco 1970
- Sphaerophrya urostylae
- Spiretta plankticola
- Spirodinium spirale
- Spirodinium ferrum ssp. equinum
- Spirochona tentinnabulum
- Spirodysteria kahli
- Oxitricha pelionella Müller 1773
- Spirofilum tubicola natans
- Spirofilum tubicolanatans Gelei 1944
- Spirofilum tubicolonatans
- Spirofragma gracilis
- Spirostomum minor
- Spirostomum sempervirescens
- Soederia tubigula
- Spathidiodes hyalina Kahl 1926
- Spathidiosus bursa Gajewskaja 1933
- Kolpoda ochrea Müller
- Kolpoda nucleus Müller
- Spathidium amphoriforme Kahl 1930 ssp. rectitoratum
- Spathidium bavariense Kahl 1930 ssp. bavariense
- Spathidium campanella
- Spathidium chlorelligerum Kahl
- Spathidium elmenteitanum
- Spathidium latistomum
- Spathidium lieberkunii
- Spathidium lieberkühni sensu Faure-Fremiet 1924
- Spathidium opium
- Kolpoda cuneus
- Spathidium spathula Müller 1773 ssp. spathula
- Spathidium sphagnophilum
- Opistotricha macrostoma Dragesco 1972
- Syndaetor nudum
- Strombidium cylindromorphus
- Strombidium claparedi
- Strombidium dalum
- Strombidium epidemum
- Strombidium eurystomum
- Strombidium globosaneum
- Strombidium gracillimum
- Strombidium ioanum
- Strombidium hadai
- Strombidium globosum
- Strombidium kryalis Petz 1994
- Strombidium maedai
- Strombidium longipes
- Strombidium obtusum
- Strombidium marinum
- Strombidium pelagica ssp. pelagica
- Strombidium planctonicum ssp. planctonicum
- Strombidium platum
- Strombidium polymorphum
- Strombidium pollostomum
- Strombidium rhynchum
- Strombidium sauerbrayae ssp. sauerbrayae
- Strombidium sauerbreyae Kahl
- Strombidium shicatum
- Trithigmostoma hyalina Kidder & Summers 1935
- Strombidium sphaericum
- Strombidium stylifer
- Strombidium tressum
- Strombidium tipicum
- Euplotes harpa ssp. baikalensis
- Strombilidium gyrans
- Strombiformis subulata
- Strombidium triquetrum
- Stylohedra lenticula
- 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