Diatoms of North AmericaDiatoms of North America
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Compare Nitzschia valdecostata

Lange-Bert. and Simonsen 1978

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Nitzschia valdecostata differs from N. valdestriata by being wider (3-5 µm, versus 2-3 µm for N. valdestriata) and lacking the 'forked appearance' of the striae. That is, two striae appear to associated with each fibula in N. valdestriata.

LM scalebar = 10 µm
Nitzschia valdecostata LM4 Nitzschia valdecostata LM5 Nitzschia valdecostata LM7 Nitzschia valdecostata LM1 Nitzschia valdecostata LM6 Nitzschia valdecostata LM3 Nitzschia valdecostata LM2
Length Range
10.0-25.0 µm
Width Range
3.0-5.0 µm
Striae in 10 µm
17-19

Also compare to

Nitzschia valdestriata

Aleem and Hust.