Diatoms of North AmericaDiatoms of North America
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Compare Diploneis parma

Cleve 1891

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Diploneis parma has not been verified in North America.

Diploneis ovalis has a larger central area. These taxa have been frequently confused, and it is important to critically compare these, especially specimens at the smaller end of the size range.

LM scalebar = 10 µm
Diploneis Parma Lectotype Diploneis Parma Lectotype2
Length Range
30 µm
Width Range
20 µm
Striae in 10 µm
14

Diploneis abscondita

Lange-Bert. and Fuhrmann 2016

Diploneis abscondita LM1 Diploneis abscondita LM2 Diploneis abscondita LM3 Diploneis abscondita LM4 Diploneis abscondita LM5 Diploneis abscondita LM7 Diploneis abscondita LM6
Length Range
13.4-40.3 µm
Width Range
8.0-14.5 µm
Striae in 10 µm
12-15

Diploneis elliptica

(Kütz.) Cleve 1894

Diploneis elliptica LM1 Dielliptica 1 Dielliptica 2 Dielliptica 3 Dielliptica 4 Dielliptica 5
Length Range
30-65 µm
Width Range
17-36 µm
Striae in 10 µm
9-10

Diploneis ovalis

(Hilse) Cleve 1891

Diploneis Ovalis 1 Diploneis Ovalis 2 Diploneis Ovalis 3 Diploneis Ovalis 4 Diploneis Ovalis 5 Diploneis Ovalis 6 Diploneis Ovalis 7
Length Range
32.5-58.7 µm
Width Range
20.7-32.6 µm
Striae in 10 µm
12-14