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Compare Discostella lacuskarluki

(Manguin ex Kociolek and Reviers) Potapova, Aycock and Bogan 2020

Compare

Discostella stelligera has larger cells, deep alveoli that occupy 25–40% of the valve radius, and straight, non-bifurcating costae. Discostella pseudostelligera has, on average, larger cells (4–15 μm in diameter) and prominent, distinctively shaped, external fultoportulae. Discostella glomerata has a size range of 4-15 μm (Houk et al. 2010) and possesses a fultoportula at the end of every marginal alveolus, a character that distinguishes it from other Discostella taxa.

LM scalebar = 10 µm
Discostella lacuskarluki LM1 Discostella lacuskarluki LM3 Discostella lacuskarluki LM4 Discostella lacuskarluki LM2 Discostella lacuskarluki LM5 Discostella lacuskarluki LM7 Discostella lacuskarluki LM6
Diameter
2.6-6.9 µm
Striae in 10 µm
13-19

Discostella pseudostelligera

(Hust.) Houk and Klee 2004

Discostella pseudostelligera LM6 Discostella pseudostelligera LM7 Discostella pseudostelligera LM1 Discostella pseudostelligera LM4 Discostella pseudostelligera LM5 Discostella pseudostelligera LM3 Discostella pseudostelligera LM2
Diameter
3.7-6.5 µm
Striae in 10 µm
22-24

Discostella stelligera

(Cleve and Grunow) Houk and Klee 2004

Discostella stelligera LM4 Discostella stelligera LM6 Discostella stelligera LM3 Discostella stelligera LM2 Discostella stelligera LM5 Discostella stelligera LM7 Discostella stelligera LM1
Diameter
3.7-13.8 µm
Striae in 10 µm
14-17

Also compare to

Discostella glomerata

Bachmann

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