The faint markings in the axial and central areas distinguish C.crassipunctata from most other large species of Cymbopleura. Cymbopleura heinii may also have these faint spots but it has higher areolae density in the striae. Cymbella inaequalis is further distinguished by having a straight raphe and rhomboid-lanceolate valves. Cymbopleura heinii, C. subrostrata, and C. neoheteropleura have hooked or crosier-shaped proximal raphe ends.

LM scalebar = 10 µm
Cymbopleura crassipunctata LM1 Cymbopleura crassipunctata LM2 Cymbopleura crassipunctata LM3 Cymbopleura crassipunctata LM5 Cymbopleura crassipunctata LM4
Length Range
111-171 µm
Width Range
29-37 µm
Striae in 10 µm

Cymbopleura heinii

Lange-Bert. and Krammer in Lange-Bert. and Genkal 1999

Cymbopleura heinii LM1 Cymbopleura heinii LM2 Cymbopleura heinii LM3 Cymbopleura heinii LM4 Cymbopleura heinii LM5 Cymbopleura heinii LM6 Cymbopleura heinii LM7
Length Range
100-207 µm
Width Range
27-39 µm
Striae in 10 µm
8-10 at the valve center, 14-16 at the apices

Cymbopleura subrostrata

(Cleve) Krammer 2003

Cymbosubrostrata1 Cymbosubrostrata2 Cymbosubrostrata3 Cymbosubrostrata4 Cymbosubrostrata5 Cymbosubrostrata6 Cymbosubrostrata7
Length Range
153-255 µm
Width Range
39-50 µm
Striae in 10 µm
8-10 at the valve center, 13-16 at the apices

Also compare to

Cymbopleura neoheteropleura