1. Subfamily Benedeniinae Johnston, 1931
   1. Genus Allobenedenia Yamaguti, 1963
   2. Genus Allometabenedeniella Velasquez, 1982
   3. Genus Ancyrocotyle Parona & Monticelli, 1903
   4. Genus Armatobenedenia Nitta, 2021
   5. Genus Benedenia Diesing, 1858
   6. Genus Benedeniella Johnston, 1929
   7. Genus Calicobenedenia Kritsky & Fennessy, 1999
   8. Genus Dioncopseudobenedenia Yamaguti, 1965
   9. Genus Gracilobenedenia Nitta, 2021
   10. Genus Lagenivaginopseudobenedenia Yamaguti, 1966
   11. Genus Menziesia Gibson, 1976
   12. Genus Metabenedeniella Yamaguti, 1958
   13. Genus Neobenedenia Yamaguti, 1963
   14. Genus Oligoncobenedenia Yamaguti, 1965
   15. Genus Pseudallobenedenia Yamaguti, 1966
   16. Genus Tareenia Hussey, 1986
   17. Genus Trimusculotrema Whittington & Barton, 1990
2. Subfamily Capsalinae Baird, 1853
   1. Genus Capsala Bosc, 1811
   2. Genus Capsaloides Price, 1936
   3. Genus Nasicola Yamaguti, 1968
   4. Genus Tristoma Cuvier, 1817
3. Subfamily Encotyllabinae Monticelli, 1892
   1. Genus Alloencotyllabe Khalil & Abdul-Salam, 1988
   2. Genus Bajacalifornia Gómez del Prado-Rosas, 2023
   3. Genus Encotyllabe Diesing, 1850
   4. Genus Neoencotyllabe Gupta & Krishna, 1975 (uncertain > taxon inquirendum)
4. Subfamily Entobdellinae Bychowsky, 1957
   1. Genus Branchobdella Kearn, Whittington & Evans-Gowing, 2007
   2. Genus Entobdella Blainville in Lamarck, 1818
   3. Genus Listrocephalos Bullard, Payne & Braswell, 2004
   4. Genus Neoentobdella Kearn & Whittington, 2005
   5. Genus Pseudoentobdella Yamaguti, 1963
5. Subfamily Interniloculinae Suriano & Beverley-Burton, 1979
   1. Genus Interniloculus Suriano & Beverley-Burton, 1979
6. Subfamily Nitzschiinae Johnston, 1931
   1. Genus Nitzschia Baer, 1826
7. Subfamily Pseudonitzschiinae Yamaguti, 1965
   1. Genus Pseudonitzschia Yamaguti, 1965
8. Subfamily Trochopodinae Price, 1936 (emend. Sposton, 1946)
   1. Genus Allomegalocotyla Yamaguti, 1963
   2. Genus Macrophyllida Johnston, 1929
   3. Genus Mediavagina Lawler & Hargis, 1968
   4. Genus Megalobenedenia Egorova, 1994
   5. Genus Megalocotyle Folda, 1928
   6. Genus Pseudobenedenia Johnston, 1931
   7. Genus Pseudobenedeniella Timofeeva, Gaevskaja & Kovaliova, 1987
   8. Genus Pseudobenedenoides Szidat, 1969
   9. Genus Pseudomegalocotyla Yamaguti, 1963
   10. Genus Sessilorbis Mamaev, 1970
   11. Genus Sprostonia Bychowsky, 1957
   12. Genus Sprostoniella Bychowsky & Nagibina, 1967
   13. Genus Trilobiodiscus Bychowsky & Nagibina, 1967
   14. Genus Trochopus Diesing, 1850
9. Genus Allosprostonia Lawler & Hargis, 1968 accepted as Allobenedenia Yamaguti, 1963 (synonym)
10. Genus Benedeniella Yamaguti, 1958 nec Johnston, 1929 accepted as Benedeniella Johnston, 1929 (homonym)
11. Genus Caballerocotyla Price, 1960 accepted as Capsala Bosc, 1811 (unaccepted > junior subjective synonym)
12. Genus Epibdella Blainville, 1828 accepted as Entobdella Blainville in Lamarck, 1818 (synonym)
13. Genus Megalobedenia accepted as Megalobenedenia Egorova, 1994 (Lapsus)
14. Genus Megalobeobenedenia accepted as Megalobenedenia Egorova, 1994 (Lapsus)
15. Genus Megalocotylinae Bychowsky, 1957 accepted as Trochopodinae Price, 1936 (emend. Sposton, 1946) (unaccepted > junior subjective synonym)
16. Genus Megalocotyloides Bychowsky & Nagibina, 1967 accepted as Allobenedenia Yamaguti, 1963 (unaccepted > junior subjective synonym)
17. Genus Neobenedeniella Yamaguti, 1963 accepted as Benedenia Diesing, 1858 (Synonym)
18. Genus Parabenedenia Gibson, 1976 accepted as Menziesia Gibson, 1976 (preoccupied)
19. Genus Phyllonella Van Beneden & Hesse, 1863 accepted as Entobdella Blainville in Lamarck, 1818 (unaccepted > junior subjective synonym)
20. Genus Placunella Van Beneden & Hesse, 1863 accepted as Trochopus Diesing, 1850 (unaccepted > junior subjective synonym)
21. Genus Pseudoallobenedenia Yamaguti, 1966 accepted as Pseudallobenedenia Yamaguti, 1966 (unaccepted > misspelling - incorrect subsequent spelling)
22. Genus Tetrasepta Suriano, 1975 accepted as Allobenedenia Yamaguti, 1963 (unaccepted > junior subjective synonym)
23. Genus Tricotyla Guiart, 1938 accepted as Capsala Bosc, 1811 (synonym)
24. Genus Tristomella Guiart, 1938 accepted as Capsala Bosc, 1811 (Synonym )
25. Genus Tristomum Cuvier, 1817 accepted as Tristoma Cuvier, 1817 (Alternate representation)
26. Genus Trochopella Euzet & Trilles, 1962 accepted as Trochopus Diesing, 1850 (unaccepted > junior subjective synonym)
27. Subfamily Trochopinae Price, 1936 accepted as Trochopodinae Price, 1936 (emend. Sposton, 1946) (unaccepted > misspelling - incorrect subsequent spelling)
28. Genus Benedeniella incertae sedis (temporary name)

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