Eunotia areniverma is similar in shape to E. metamonodon, but the apices of E. areniverma are more rounded. Eunotia monodontiforma possesses spines on the dorsal margin and a greater areola density. Eunotia maior has spines on the apical, dorsal, and ventral margins. Eunotia formica is smaller and more narrow, with a lower stria and areola density than E. metamonodon. Eunotia indica is smaller and has a greater stria and areola density.

LM scalebar = 10 µm
Eu Mono 1 Eu Mono 2 Eu Mono 4 Eumono 9 Eu Mono 5 Eu Mono 7 Eu Mono 6
Length Range
26.3–246.0 µm
Width Range
9.6–16.7 µm
Striae in 10 µm
9–11 at center of the valve, 12–15 near the apices

Eunotia areniverma

Furey, Lowe and Johansen 2011

Eunotia areniverma LM6 Eunotia areniverma LM5 Eunotia areniverma LM4 Eunotia areniverma LM3 Eunotia areniverma LM7 Eunotia areniverma LM2 Eunotia areniverma LM1
Length Range
32-59 µm
Width Range
10.5-12.0 µm
Striae in 10 µm
9-12 in the valve center, 12-14 near the apices

Eunotia formica

Ehrenb. 1843

Eu Formica 1 Eu Formi 6 Eu Formi 2 Eu Formi 3 Eu Formi 4 Eu Formi 5
Length Range
51.8–142.1 µm
Width Range
6.4–9.9, at the central swelling: 7.8–15.8 µm
Striae in 10 µm
6–10 in the center, 10–16 near the apices

Also compare to

Eunotia monodontiforma

Lange-Bert. and Nörpel-Schempp

Eunotia maior

(W.Sm.) Rabenh.

Eunotia indica