Diatoms of North AmericaDiatoms of North America
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Compare Aneumastus tusculus

(Ehrenb.) D.G.Mann and Stickle in Round, R.M.Crawford and D.G.Mann 1990

Compare

Aneumastus pseudotusculus has a higher areola density and areolae are more regularly spaced. Aneumastus rostratus has lanceolate valves with shorter, rostrate apices and a straighter raphe. Aneumastus stroesei is smaller, with a higher stria and areola density. Aneumastus carolinianus has acutely rounded apices.

LM scalebar = 10 µm
Aneumastustusculus 1 Aneumastustusculus 2 Aneumastustusculus 3 Aneumastustusculus 4 Aneumastustusculus 5 Aneumastustusculus 6
Length Range
45-67 µm
Width Range
16.5-20.7 µm
Striae in 10 µm
11-12

Aneumastus pseudotusculus

(Hust.) E.J.Cox and D.M.Williams 2000

Aneumastus Pseudotuscula LM4 Aneumastus Pseudotuscula LM3 Aneumastus Pseudotuscula LM5 Aneumastus Pseudotuscula LM1 Aneumastus Pseudotuscula LM2
Length Range
40-50 µm
Width Range
16-17 µm
Striae in 10 µm
12-16

Aneumastus rostratus

(Hust.) Lange-Bert. 2001

Aneumastus rostratus LM1 Aneumastus rostratus LM2 Aneumastus rostratus LM3 Aneumastus rostratus LM5 Aneumastus rostratus LM4
Length Range
43-64 µm
Width Range
16.9-19.6 µm
Striae in 10 µm
11-12

Aneumastus carolinianus

(Patrick) Lange-Bert. 2001

Aneumastus carolinianus LM1 Aneumastus carolinianus LM2 Aneumastus carolinianus LM3 Aneumastus carolinianus LM4 Aneumastus carolinianus LM5 Aneumastus carolinianus LM6 Aneumastus carolinianus LM7
Length Range
37.6-58.2 µm
Width Range
13.7-18.2 µm
Striae in 10 µm
11-13

Also compare to

Aneumastus stroesei

(Østrup) D.G.Mann in Round et al.