Compare

Cymbopleura amphicephala has more elliptic valves, with capitate apices that are deflected ventrally. Cymbopleura similiformis has more linear valves, with distinct shoulders and capitate apices.

LM scalebar = 10 µm
Cymbopleura frequens LM1 Cymbopleura frequens LM2 Cymbopleura frequens LM3 Cymbopleura frequens LM4 Cymbopleura frequens LM5 Cymbopleura frequens LM6
Length Range
19.6-43.5 µm
Width Range
7.5-9.0 µm
Striae in 10 µm
12-14 in the valve center, up to 16 near the apices

Cymbopleura amphicephala

(Naegeli) Krammer 2003

Cymbopleura amphicephala LM1 Cymbopleura amphicephala LM2 Cymbopleura amphicephala LM3 Cymbopleura amphicephala LM4 Cymbopleura amphicephala LM5 Cymbopleura amphicephala LM6 Cymbopleura amphicephala LM7
Length Range
19.8-31.8 µm
Width Range
6.4-8.7 µm
Striae in 10 µm
12-16 at center valve, up to 18 at the ends

Also compare to

Cymbopleura similiformis

Krammer 2003

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