Diatoms of North AmericaDiatoms of North America
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Compare Cavinula pseudoscutiformis

(Hust.) D.G.Mann and Stickle in Round, R.M.Crawford and D.G.Mann 1990

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Cavinula pseudoscutiformis has a round valve as compared to C. vincentii and C. scutelloides. In addition, the central area is linear in C. pseudoscutiformis, while the central areas of C. vincentii and C. scutelloides are expanded.

LM scalebar = 10 µm
Cavinula pseudoscutiformis LM2 Cavinula pseudoscutiformis LM1 Cavinula pseudoscutiformis LM4 Cavinula pseudoscutiformis LM5 Cavinula pseudoscutiformis LM3
Length Range
5.5-10.0 µm
Width Range
4.9-9.3 µm
Striae in 10 µm
16-24 in the center valve

Cavinula vincentii

D.Anton. and Hamilton in D.Anton. et al. 2009

Cavinula vincentii LM4 Cavinula vincentii LM1 Cavinula vincentii LM2 Cavinula vincentii LM3 Cavinula vincentii LM5
Length Range
12-15 µm
Width Range
8-11 µm
Striae in 10 µm
23-26

Cavinula scutelloides

(W.Sm.) Lange-Bert. in Lange-Bert. and Metzeltin 1996

Gc8526 1A Gc8526 4 Gc8526 5 Gc8526 3 Gc8526 2 Gc8526 6
Length Range
13-24 µm
Width Range
10-15 µm
Striae in 10 µm
6-8