Diatoms of North AmericaDiatoms of North America
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Compare Frustulia amosseana

Lange-Bert. in Rumrich et al. 2000

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The central area of Frustulia asiatica is oval, rather than linear. Valves of F. neomundana are linear-lanceolate and one longitudinal rib is continuous through the central area.

LM scalebar = 10 µm
Frustulia amosseana LM1 Frustulia amosseana LM2 Frustulia amosseana LM3 Frustulia amosseana LM4 Frustulia amosseana LM5 Frustulia amosseana LM6 Frustulia amosseana LM7
Length Range
28.1-61.3 µm
Width Range
5.8-8.3 µm
Striae in 10 µm
30-34

Frustulia asiatica

(Skvortzow) Metzeltin, Lange-Bert. and Nergui 2009

Frustulia asiatica LM1 Frustulia asiatica LM2 Frustulia asiatica LM3 Frustulia asiatica LM4 Frustulia asiatica LM5
Length Range
42.5-48.5 µm
Width Range
8.0-9.0 µm
Striae in 10 µm
30-32 in the center valve, 34-35 at the ends

Frustulia neomundana

Lange-Bert. and Rumrich 2000

Frustulia neomundana LM5 Frustulia neomundana LM4 Frustulia neomundana LM3 Frustulia neomundana LM2 Frustulia neomundana LM1
Length Range
38.5-44.0 µm
Width Range
7.5-8.0 µm
Striae in 10 µm
31-32 at the center