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Compare Aulacoseira italica

(Ehrenb.) Simonsen 1979

Compare

Aulacoseira italica differs from other Aulacoseria species by is its left curving (sinistrorse) or almost straight rows of mantle areolae. It is similar to A. valida by cell size and proportions and by the shape and size of the spines, but A. valida has rows of mantle areolae strongly curved to the right. Mantle areolae of A. italica are narrower and more slit-like, while areolae of A. valida are more rectangular and become larger near the valve face.

LM scalebar = 10 µm
Aulacoseira italica LM2 Aulacoseira italica LM1 Aulacoseira italica LM4 Aulacoseira italica LM3 Aulacoseira italica LM4 Aulacoseira italica LM6
Diameter
4-24 µm
Width Range
9-20 µm
Striae in 10 µm
17-25

Aulacoseira valida

(Grunow in Van Heurck) Krammer 1991

Aulacoseira valida LM2 Aulacoseira valida LM3 Aulacoseira valida LM4 Aulacoseira valida LM5 Aulacoseira valida LM6 Aulacoseira valida LM1
Diameter
7-16 µm
Width Range
10-16 µm
Striae in 10 µm
12-17

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