1. Species Dilophus alternans J.Agardh, 1882 accepted as Dictyota pinnatifida Kützing, 1859
2. Species Dilophus angustus J.Agardh, 1894 accepted as Dictyota fastigiata Sonder, 1845
3. Species Dilophus crenulatus (J.Agardh) Nizamuddin & Gerloff, 1979 accepted as Dictyota crenulata J.Agardh, 1847
4. Species Dilophus crinitus J.Agardh, 1897 accepted as Dictyota crinita (J.Agardh) Hörnig, Schnetter & Prud'Homme van Reine, 1992
5. Species Dilophus cypricus Grunow, 1894 accepted as Dictyota fasciola var. repens (J.Agardh) Ardissone, 1883 (synonym)
6. Species Dilophus decumbens R.W.Ricker, 1987 accepted as Dictyota decumbens (R.W.Ricker) Hörnig, Schnetter & Prud'homme van Reine, 1992
7. Species Dilophus fasciculatus J.Agardh, 1894 accepted as Dictyota fastigiata Sonder, 1845
8. Species Dilophus fasciola (Roth) M.A.Howe, 1914 accepted as Dictyota fasciola (Roth) J.V.Lamouroux, 1809 (synonym)
9. Species Dilophus fastigiatus (Sonder) J.Agardh, 1882 accepted as Dictyota fastigiata Sonder, 1845 (synonym)
10. Species Dilophus flabellatus F.S.Collins, 1901 accepted as Dictyota flabellata (F.S.Collins) Setchell & N.L.Gardner, 1924
11. Species Dilophus foliosus J.Agardh, 1894 accepted as Dictyota gunniana (J.Agardh) I.Hörnig, R.Schnetter & Prud'homme van Reine, 1992
12. Species Dilophus guineensis (Kützing) J.Agardh, 1882 accepted as Dictyota guineënsis (Kützing) P.Crouan & H.Crouan, 1878
13. Species Dilophus gunnianus J.Agardh, 1882 accepted as Dictyota gunniana (J.Agardh) I.Hörnig, R.Schnetter & Prud'homme van Reine, 1992 (synonym)
14. Species Dilophus intermedius (Zanardini) Allender & Kraft, 1983 accepted as Dictyota intermedia Zanardini, 1874
15. Species Dilophus kohlmeyeri Nizamuddin & Gerloff, 1979 accepted as Dictyota ciliolata Sonder ex Kützing, 1859
16. Species Dilophus ligulatus (Kützing) Feldmann, 1937 accepted as Dictyota spiralis Montagne, 1846 (synonym)
17. Species Dilophus marginatus (Okamura) Okamura, 1915 accepted as Rugulopteryx okamurae (E.Y.Dawson) I.K.Hwang, W.J.Lee & H.S.Kim, 2009 (synonym)
18. Species Dilophus marginatus J.Agardh, 1894 accepted as Rugulopteryx marginata (J.Agardh) De Clerck & Coppejans, 2006 (synonym)
19. Species Dilophus mediterraneus Schiffner, 1931 accepted as Dictyota mediterranea (Schiffner) G.Furnari, 1997 (synonym)
20. Species Dilophus moniliformis J.Agardh, 1894 accepted as Dictyota moniliformis (J.Agardh) Hörnig, Schnetter & Prud'homme van Reine, 1992
21. Species Dilophus okamurae E.Y.Dawson, 1950 accepted as Rugulopteryx okamurae (E.Y.Dawson) I.K.Hwang, W.J.Lee & H.S.Kim, 2009 (synonym)
22. Species Dilophus opacus J.Agardh, 1882 accepted as Dictyota fastigiata Sonder, 1845
23. Species Dilophus pinnatus E.Y.Dawson, 1950 accepted as Dictyota pinnata (E.Y.Dawson) I.Hörnig, R.Schnetter & Prud'homme van Reine, 1993
24. Species Dilophus prolificans (A.Gepp & E.S.Gepp) Cribb, 1954 accepted as Dictyota intermedia Zanardini, 1874 (synonym)
25. Species Dilophus radicans Okamura, 1916 accepted as Padina boryana Thivy, 1966
26. Species Dilophus repens (J.Agardh) J.Agardh, 1882 accepted as Dictyota fasciola var. repens (J.Agardh) Ardissone, 1883 (synonym)
27. Species Dilophus robustus (J.Agardh) Womersley, 1967 accepted as Dictyota robusta J.Agardh, 1894
28. Species Dilophus spiralis (Montagne) G.Hamel, 1939 accepted as Dictyota spiralis Montagne, 1846 (synonym)
29. Species Dilophus stolonifera (Dawson) Schnetter & Bula-Meyer, 1982 accepted as Dictyota stolonifera E.Y. Dawson, 1962
30. Species Dilophus suhrii (Kützing) Papenfuss, 1940 accepted as Dictyota suhrii G.Murray, 1888 accepted as Rugulopteryx suhrii (Kützing) De Clerck & Coppejans, 2006 (synonym)
31. Species Dilophus taeniaeformis J.Agardh, 1882 accepted as Dictyota fastigiata Sonder, 1845
32. Species Dilophus tenera J.Agardh, 1894 accepted as Dictyota gunniana (J.Agardh) I.Hörnig, R.Schnetter & Prud'homme van Reine, 1992
33. Species Dilophus wilsonii J.Agardh, 1894 accepted as Dictyota gunniana (J.Agardh) I.Hörnig, R.Schnetter & Prud'homme van Reine, 1992
34. Species Dilophus furcula Woronichin, 1908 (uncertain)

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