Compare Cymbopleura perprocera
Compare
Cymbopleura procera, a species described from the Columbia River in Oregon, has a wider axial area and a higher density of areolae in the striae (24-26 in 10 µm). Cymbopleura inaequalis, C. lata, and C. subrostrata have narrower axial areas and wider, more bluntly rounded apices. Proximal raphe ends are distinctly hooked in valves of C. subcuspidata and C. subrostrata.
LM scalebar = 10 µm
Length Range
62.3-114.4 µm
62.3-114.4 µm
Width Range
19.6-25.1 µm
19.6-25.1 µm
Striae in 10 µm
8-9 at the valve center, 12-13 near the apices on the dorsal side
8-9 at the valve center, 12-13 near the apices on the dorsal side
Cymbopleura inaequalis
Length Range
86-190 µm
86-190 µm
Width Range
30-40 µm
30-40 µm
Striae in 10 µm
5-8 near the valve center, 8-12 near the apices
5-8 near the valve center, 8-12 near the apices
Cymbopleura lata
Length Range
46-87 µm
46-87 µm
Width Range
17.0-20.9 µm
17.0-20.9 µm
Striae in 10 µm
8-10 at the valve center, 12-14 near the apices
8-10 at the valve center, 12-14 near the apices
Cymbopleura subrostrata
Length Range
153-255 µm
153-255 µm
Width Range
39-50 µm
39-50 µm
Striae in 10 µm
8-10 at the valve center, 13-16 at the apices
8-10 at the valve center, 13-16 at the apices
Cymbopleura subcuspidata
Length Range
67-111 µm
67-111 µm
Width Range
19-25 µm
19-25 µm
Striae in 10 µm
9-12 (dorsal and ventral) at the valve center; 12-15 (dorsal) and 13-16 (ventral) at the apices
9-12 (dorsal and ventral) at the valve center; 12-15 (dorsal) and 13-16 (ventral) at the apices