Compare Epithemia alpestris
Epithemia argus lacks protracted and reflexed ends, and the dorsal margin is less convex. Epithemia turgida has a higher costa density and the proximal raphe ends are closer to the ventral margin. Epithemia adnata also has proximal raphe ends that are closer to the ventral margin. Differentiating these species in girdle view is difficult in LM.
LM scalebar = 10 µm
Length Range
39 – 77 µm
39 – 77 µm
Width Range
10.5-13.5 µm
10.5-13.5 µm
Striae in 10 µm
10-12.5
10-12.5
Length Range
36.2-84.3 µm
36.2-84.3 µm
Width Range
8.4-13.9 µm
8.4-13.9 µm
Striae in 10 µm
10-11
10-11
Length Range
45-166 µm
45-166 µm
Width Range
13.5-17 µm
13.5-17 µm
Striae in 10 µm
8-10
8-10
Length Range
32-70 µm
32-70 µm
Width Range
7.5-9.7 µm
7.5-9.7 µm
Striae in 10 µm
12-14
12-14
