1. Species Benedenia akajin Ogawa, Mizuochi, Yamaguchi, Shirakashi, Asai & Agawa, 2021
2. Species Benedenia bodiani Yamaguti, 1968
3. Species Benedenia disciliata Whittington & Deveney, 2011
4. Species Benedenia elongata (Yamaguti, 1968) Egorova, 1997
5. Species Benedenia epinepheli (Yamaguti, 1937) Meserve, 1938
6. Species Benedenia ernsti Deveney & Whittington, 2010
7. Species Benedenia fieldsi Deveney & Whittington, 2010
8. Species Benedenia hawaiiensis Yamaguti, 1968
9. Species Benedenia haywardi Deveney & Whittington, 2010
10. Species Benedenia hendorffii (Linstow, 1889) Stiles & Hassall, 1908
11. Species Benedenia hoshinai Ogawa, 1984
12. Species Benedenia humboldti Baeza, Sepúlveda & González, 2019
13. Species Benedenia innobilitata Burnheim, Gomes & Varela, 1973
14. Species Benedenia ishikawae (Goto, 1894) Monticelli, 1902
15. Species Benedenia jalisciana Bravo-Hollis, 1951
16. Species Benedenia kobudai Nitta, 2022
17. Species Benedenia lolo Yamaguti, 1968
18. Species Benedenia monticellii (Parona & Perugia, 1895) Johnston, 1929
19. Species Benedenia ovata (Goto, 1894) MacCallum, 1927
20. Species Benedenia plataxicola Gupta & Khanna, 1976
21. Species Benedenia pompatica Burnheim, Gomes & Varela, 1973
22. Species Benedenia scari Yamaguti, 1968
23. Species Benedenia sciaenae (Van Beneden, 1852) Odhner, 1905
24. Species Benedenia sekii (Yamaguti, 1937) Meserve, 1938
25. Species Benedenia seriolae (Yamaguti, 1934) Meserve, 1938
26. Species Benedenia synagris Yamaguti, 1953
27. Species Benedenia madai (Ishii & Sawada, 1938) Price, 1939 (uncertain > taxon inquirendum)
28. Species Benedenia pagrosomi (Ishii & Sawada, 1938) Price, 1939 (uncertain > taxon inquirendum)
29. Subgenus Benedenia (Benedeniella) Johnston, 1929 accepted as Benedeniella Johnston, 1929 (unaccepted > superseded rank)
    1. Species Benedenia (Benedeniella) macrocolpa (Lühe, 1906) Johnston, 1929 accepted as Benedeniella macrocolpa (Lühe, 1906) Johnston, 1929 (unaccepted > junior objective synonym)
30. Subgenus Benedenia (Parabenedenia) Johnston, 1929 accepted as Benedenia Diesing, 1858 (unaccepted > junior subjective synonym)
    1. Species Benedenia (Parabenedenia) melleni (MacCallum, 1927) Johnston, 1929 accepted as Neobenedenia melleni (MacCallum, 1927) Yamaguti, 1963 (unaccepted > superseded combination)
    2. Species Benedenia (Parabenedenia) ovata (Goto, 1894) Johnston, 1929 accepted as Benedenia ovata (Goto, 1894) MacCallum, 1927 (unaccepted > superseded combination)
31. Species Benedenia acanthopagri (Hussey, 1986) Whittington, Deveney & Wyborn, 2001 accepted as Tareenia acanthopagri Hussey, 1986 (unaccepted > superseded combination)
32. Species Benedenia adenea Meserve, 1938 accepted as Neobenedenia adenea (Meserve, 1938) Yamaguti, 1963 (Superseded combination)
33. Species Benedenia akaisaki Iwata, 1990 accepted as Benedenia ovata (Goto, 1894) MacCallum, 1927 (synonym)
34. Species Benedenia anadenea Meserve, 1938 accepted as Neobenedenia adenea (Meserve, 1938) Yamaguti, 1963 (synonym)
35. Species Benedenia anticavaginata Byrnes, 1986 accepted as Gracilobenedenia anticavaginata (Byrnes, 1986) Nitta, 2021 (unaccepted > superseded combination)
36. Species Benedenia armata Nitta, 2019 accepted as Armatobenedenia armata (Nitta, 2019) Nitta, 2021 (unaccepted > superseded combination)
37. Species Benedenia beverleyburtonae Whittington & Deveney, 2011 accepted as Gracilobenedenia beverleyburtonae (Whittington & Deveney, 2011) Nitta, 2021 (unaccepted > superseded combination)
38. Species Benedenia congeri (Yamaguti, 1958) Byrnes, 1986 accepted as Benedenia epinepheli (Yamaguti, 1937) Meserve, 1938 (unaccepted > junior subjective synonym)
39. Species Benedenia convoluta Bravo-Hollis, 1953 accepted as Allobenedenia pseudomarginata (Bravo-Hollis, 1958) Yang, Kritsky & Sun, 2004 (homonym)
40. Species Benedenia convoluta Yamaguti, 1937 accepted as Allobenedenia convoluta (Yamaguti, 1937) Yamaguti, 1963 (Superseded combination)
41. Species Benedenia derzhavini (Layman, 1930) Meserve, 1938 accepted as Megalobenedenia derzhavini (Layman, 1930) Egorova, 1994 (Superseded combination)
42. Species Benedenia elegans Diesing, 1858 accepted as Benedenia sciaenae (Van Beneden, 1852) Odhner, 1905 (Synonym)
43. Species Benedenia girellae Hargis, 1955 accepted as Neobenedenia girellae (Hargis, 1955) Yamaguti, 1963 (Superseded combination)
44. Species Benedenia isabellae Meserve, 1938 accepted as Neobenedenia isabellae (Meserve, 1938) Yamaguti, 1963 (Superseded combination)
45. Species Benedenia kintoki Iwata, 1990 accepted as Benedenia elongata (Yamaguti, 1968) Egorova, 1997 (synonym)
46. Species Benedenia leucanthemum Euzet & Maillard, 1967 accepted as Trimusculotrema leucanthemum (Euzet & Maillard, 1967) Whittington & Barton, 1990 (Genus revision)
47. Species Benedenia lutjani Whittington & Kearn, 1993 accepted as Tareenia lutjani (Whittington & Kearn, 1993) Egorova, 1997 accepted as Gracilobenedenia lutjani (Whittington & Kearn, 1993) Nitta, 2021 (unaccepted > superseded combination)
48. Species Benedenia malaboni Velasquez, 1982 accepted as Menziesia malaboni (Velasquez, 1982) (synonym)
49. Species Benedenia merinthe (Yamaguti, 1968) Egorova, 1997 accepted as Menziesia merinthe (Yamaguti, 1968) Gibson, 1976 (synonym)
50. Species Benedenia micracantha Euzet & Maillard, 1967 accepted as Trimusculotrema micracantha (Euzet & Maillard, 1967) Whittington & Barton, 1990 (genus revision)
51. Species Benedenia muelleri (Meserve, 1938) Meserve, 1939 accepted as Neobenedenia muelleri (Meserve, 1938) Yamaguti, 1963 (Superseded combination)
52. Species Benedenia noblei Menzies, 1946 accepted as Menziesia noblei (Menzies, 1946) Gibson, 1976 (Superseded combination)
53. Species Benedenia orbicularicola Gupta & Khanna, 1976 accepted as Allometabenedeniella orbicularicola (Gupta & Khanna, 1975) Hussey, 1986 (Superseded combination)
54. Species Benedenia ovalis (Yamaguti, 1968) Egorova, 1997 accepted as Menziesia ovalis (Yamaguti, 1968) Gibson, 1976 (synonym)
55. Species Benedenia pacifica (Guberlet, 1936) Price, 1939 accepted as Pseudoentobdella pacifica (Guberlet, 1936) Yamaguti, 1963 (Superseded combination)
56. Species Benedenia posterocolpa Hargis, 1955 accepted as Benedeniella posterocolpa (Hargis, 1955) Yamaguti, 1963 accepted as Parabenedeniella posterocolpa (Hargis, 1955) Brule & Bullard in Brule, Warren & Bullard, 2026 (unaccepted > superseded combination)
57. Species Benedenia rohdei Whittington, Kearn & Beverley-Burton, 1994 accepted as Gracilobenedenia rohdei (Whittington, Kearn & Beverley-Burton, 1994) Nitta, 2021 (unaccepted > superseded combination)
58. Species Benedenia sargocentron Ding & Zhang in Zhang, Yang & Liu, 2001 accepted as Benedenia hawaiiensis Yamaguti, 1968 (synonym)
59. Species Benedenia sebastodis (Yamaguti, 1938) accepted as Menziesia sebastodis (Yamaguti, 1934) Whittington, Deveney & Wyborn, 2001 (Superseded combination)
60. Species Benedenia hoplognathi Yamaguti, 1942 represented as Epibdella (Benedenia) hoplognathi Yamaguti, 1942 accepted as Metabenedeniella hoplognathi (Yamaguti, 1942) Yamaguti, 1963

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