| Species | as Species | Doubtful |
|---|---|---|
| Pseudo-nitzschia calliantha Lundholm, Moestrup & Hasle, 2003 | ||
| Pseudo-nitzschia delicatissima (P.T. Cleve, 1897) Heiden, 1928 | ||
| Pseudo-nitzschia inflatula (G.R.Hasle) G.R.Hasle, 1993 | ||
| Pseudo-nitzschia pseudodelicatissima (Hasle) Hasle, 1993 | ||
| Pseudo-nitzschia pungens (Grunow ex P.T. Cleve, 1897) Hasle, 1993 | ||
| Pseudo-nitzschia seriata (P.T. Cleve, 1883) H. & M. Peragallo, 1900 |