Diatoms of North AmericaDiatoms of North America
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Compare Pseudofallacia monoculata

(Hust.) Liu, Kociolek and Wang 2012

Compare

Fallacia subhamulata has parallel valve margins and broadly rounded ends. Fallacia insociabilis has a broader axial hyaline area, and also has another break in the striae at the valve margin.

LM scalebar = 10 µm
Pseudofallacia monoculata LM2 Pseudofallacia monoculata LM8 Pseudofallacia monoculata LM6 Pseudofallacia monoculata LM7 Pseudofallacia monoculata LM9 Pseudofallacia monoculata LM4 Pseudofallacia monoculata LM3
Length Range
8.8-16.2 µm
Width Range
4-5.2 µm
Striae in 10 µm
22-24

Fallacia subhamulata

(Grunow in Van Heurck) D.G.Mann in Round et al. 1990

Fallacia subhamulata LM4 Fallacia Subhamulata15603B 12032015 04 Cl Fallacia subhamulata LM3 Fallacia subhamulata LM5 Fallacia subhamulata LM2 Fallacia subhamulata LM6 Fallacia subhamulata LM1
Length Range
15.0-17.3 µm
Width Range
5.6-6.0 µm
Striae in 10 µm
28-31

Also compare to

Fallacia insociabilis

(Krasske) D.G.Mann 1990