| Diploneis finnica var. genuina Cleve-Euler, 1953 |
| Diploneis fusca (W. Greg.) Cleve, 1894 |
| Diploneis fusca var. pelagi (A.W.F. Schmidt) Cleve, 1894 |
| Diploneis gemmata (Grev.) Cleve, 1894 |
| Diploneis gemmatula (Grunow) Cleve, 1894 |
| Diploneis gruendleri (A.W.F. Schmidt) Cleve, 1894 |
| Diploneis hudsonis (Grunow) Cleve, 1894 |
| Diploneis incurvata (W. Greg.) Cleve, 1894 |
| Diploneis interrupta (Kütz.) Cleve, 1894 |
| Diploneis lineata (Donk.) Cleve, 1894 |
| Diploneis litoralis (Donk.) Cleve, 1894 |
| Diploneis litoralis var. clathrata (Østrup) Cleve, 1896 |
| Diploneis marginestriata Hust., 1922 |
| Diploneis mediterranea (Grunow) Cleve, 1894 |
| Diploneis muticum (Yendo) Fensholt, 1955 |
| Diploneis nitescens (W. Greg.) Cleve, 1894 |
| Diploneis notabilis (Grev.) Cleve, 1894 |
| Diploneis obliqua (Brun) Hust., 1937 |
| Diploneis oblongella (Nägeli ex Kütz.) Cleve-Euler, 1922 |
| Diploneis ovalis (Hilse) Cleve, 1894 |