Compare Simonsenia delognei
Simonsenia delognei does not have true fibulae and its striae are not resolved in the LM, while Nitzschia valdecostata has fibulae and resolved striae. Simonsenia delognei also has narrower valves with finer, more protracted apices.
LM scalebar = 10 µm
Length Range
9.5-14.5 µm
9.5-14.5 µm
Width Range
2.5 µm
2.5 µm
Length Range
10.0-25.0 µm
10.0-25.0 µm
Width Range
3.0-5.0 µm
3.0-5.0 µm
Striae in 10 µm
17-19
17-19
