Diatoms of North AmericaDiatoms of North America
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Compare Nupela carolina

Potapova and Clason in Potapova et al. 2003

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Nupela carolina differs from N. frezelii by smaller size, higher striae density and by having a raphe on both valves. Nupela neglecta can be distinguished from N. carolina by reduced raphe slits on one of the valves.

LM scalebar = 10 µm
Nupela carolina LM7 Nupela carolina LM6 Nupela carolina LM4 Nupela carolina LM1 Nupela carolina LM2 Nupela carolina LM3 Nupela carolina LM5
Length Range
5-15 µm
Width Range
2.4-4.4 µm
Striae in 10 µm
42-54

Nupela frezelii

Potapova 2011

Gs024284 Nufrezeli 2B Me000029 Nufrez 5A Ed Nupela frezelii LM3 Nupela frezelii LM1 Nupela frezelii LM1 Nupela frezelii LM2 Me000029 Nufr 4A Ed
Length Range
10-29 µm
Width Range
3.8-6.3 µm
Striae in 10 µm
29-33

Nupela neglecta

Ponader, R.L.Lowe and Potapova in Potapova et al. 2003

Nupela neglecta LM4 Nupela neglecta LM5 Nupela neglecta LM3 Nupela neglecta LM1 Nupela neglecta LM2 Nupela neglecta LM6 Nupela neglecta LM7
Length Range
3-15 µm
Width Range
2.6-4.5 µm
Striae in 10 µm
40-48