Species (84)
- Trichodina fariai Da Cunha & Pinto 1928
- Trichodina pediculus Ehrenberg 1831
- Trichodina zambeziensis
- Trichodina vorax Ehrenberg 1831
- Trichodina domerguei ssp. megamicronucleata
- Trichodina porocephalusi Asmat 2001
- Trichodina compacta
- Trichodina spongillae
- Trichodina scorpoena
- Trichodina steini
- Trichodina stellina
- Trichodina truttae
- Trichodina terebellidis
- Trichodina uniforma
- Trichodina unionis Hampl 1955
- Trichodina uretra
- Trichodina vesicularum
- Trichodina algonquinensis
- Trichodina acuta Lom 1961
- Trichodina acarus
- Trichodina auerbachii
- Trichodina balakrishnia
- Trichodina canton
- Trichodina centrostrigeata
- Trichodina xenopodos
- Trichodina digitodiscus -
- Trichodina domerguei Wallengren 1897 ssp. domerguei
- Trichodina domergui Wallengren 1897
- Trichodina entzii
- Trichodina faurefremieti
- Trichodina jadranica Lom & Laird 1969
- Trichodina kazubski
- Trichodina luba
- Trichodina macomarum
- Trichodina magna
- Trichodina mandarin
- Trichodina maritinkae
- Trichodina matsu
- Trichodina migala
- Trichodina modesta Lom 1970
- Trichodina mutabilis Kozubsky & Migala 1968
- Trichodina myicola
- Trichodina nigra Lom 1960
- Trichodina nobilis Chen 1963
- Trichodina pagoda
- Trichodina scoloplontis
- Trichodina ranae Cunha 1950
- Trichodina salmonicida
- Trichodina wulai
- Leiotrocha patellae
- Trichodina domerguei ssp. diaptomus
- Trichodina antedonis
- Trichodina domerguei ssp. acuta
- Trichodina domerguei ssp. diaptomi
- Trichodina synaptae
- Leiotrocha serpularum Fabre-Domergue 1888
- Trichodina prorocephalusi
- Cyclochaeta serpularum Fabre-Domergue 1888
- Trichodina heterodentata Duncan 1977
- Trichodina labrorum Chatton 1910
- Trichodina patellae Cuenot 1891
- Trichodina polaridiae Fenchel 1965
- Trichoda grandinella Müller 1773
- Trichodina asterisci Gruber 1884
- Trichodina baltica Quennerstedt 1869
- Trichodina bidentata Fabre-Domergue 1888
- Trichodina decipiens Laird 1961
- Trichodina domerguei Lom & Laird 1969 ssp. saintjohnsi
- Trichodina galyae Lom & Laird 1969
- Trichodina elizabethae Lom & Laird 1969
- Trichodina grandinella Müller 1773
- Trichodina jarmilae Lom & Laird 1969
- Trichodina polycirra Lom 1961
- Trichodina scorpaenae Robin 1879
- Trichodina steinii Claparède & Lachmann 1858
- Trichodina rhinobatae Van As & Basson 1996
- Trichodina urinicola Fulton 1923
- Trichodina tentaculata Ehrenberg 1831
- Trichodina vancouverense Laird 1961
- Trichodina domerguei Wallengren 1897
- Trichodina reticulata Hirschmann & Partsch 1955
- Trichodina urinaria Dogiel 1940
- Trichodina pediculus Müller 1773
- Hetteria grandinella