Compare Cavinula pusio
Compare
Cavinula pusio is distinct, as compared to species currently within the genus. Both C. cocconeiformis and C. scutiformis lack protracted apices and have larger central areas. Cavinula pusio, however, may be confused with Navicula detenta, a species that may belong in Cavinula. Navicula detenta has smaller valves and generally lacks short striae around the central area.
LM scalebar = 10 µm
Length Range
18.9-22.8 µm
18.9-22.8 µm
Width Range
9.2-10.8 µm
9.2-10.8 µm
Striae in 10 µm
30-36 in 10 µm at the valve center, including short striae; a little closer at the apices
30-36 in 10 µm at the valve center, including short striae; a little closer at the apices
Cavinula cocconeiformis
Length Range
9-28 µm
9-28 µm
Width Range
6-9 µm
6-9 µm
Striae in 10 µm
26-32 in the center valve, 28-34 at the ends
26-32 in the center valve, 28-34 at the ends
Cavinula scutiformis
Length Range
18-36 µm
18-36 µm
Width Range
12.3-17.7 µm
12.3-17.7 µm
Striae in 10 µm
24-26 at the valve center, 28-32 near the apices
24-26 at the valve center, 28-32 near the apices
