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Nupela vitiosa differs from N. fennica by the shape of the central area, which is elliptical and asymmetrical, expanded to one side of the valve. Nupela fennica has a symmetrical rectangular central area.

LM scalebar = 10 µm
Nupela vitiosa LM5 Nupela vitiosa LM1 Nupela vitiosa LM7 Nupela vitiosa LM3 Nupela vitiosa LM2 Nupela vitiosa LM6 Nupela vitiosa LM4
Length Range
6.5-15.0 µm
Width Range
2.7-3.6 µm
Striae in 10 µm
35-40

Nupela fennica

(Hust.) Lange-Bert. 2004

Gs024284  Nufennica 7 Ed Ih 020665  Nufennica 1 Ed Gs024284  Nufennica 6 Gs024284  Nufennica 3 Ed Gs024284  Nufennica 8
Length Range
9-18 µm
Width Range
2.7-3.5 µm
Striae in 10 µm
35-40

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