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Diploneis calcilacustris is similar in length and width, but the areolae are larger and more "blocky". Diploneis ovalis has rhombic-elliptic valves and a somewhat larger central area. Diploneis elliptica valves are wider and more elliptic.

LM scalebar = 10 µm
Diploneis krammeri LM4 Diploneis krammeri LM5 Diploneis krammeri LM6
Length Range
31-49 µm
Width Range
15-16 µm
Striae in 10 µm
11-12

Diploneis calcilacustris

Lange-Bert. and Fuhrmann 2016

Diploneis calcilacustris LM1 Diploneis calcilacustris LM3 Diploneis calcilacustris LM2 Diploneis calcilacustris LM4 Diploneis calcilacustris LM5 Diploneis calcilacustris LM6 Diploneis calcilacustris LM7
Length Range
20–32 µm
Width Range
11–15 µm
Striae in 10 µm
11-13

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

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