Stauroneis subhyperborea has a smaller stauros and lower stria and areola densities. Stauroneis thompsonii is larger, lacks protracted apices, and has lower stria and areola densities. Stauroneis finlandia is much larger and has strongly curved and inflated proximal raphe ends.

LM scalebar = 10 µm
Stauroneis sacajaweae LM6 Stauroneis sacajaweae LM5 Stauroneis sacajaweae LM4 Stauroneis sacajaweae LM3 Stauroneis sacajaweae LM2 Stauroneis sacajaweae LM1
Length Range
54-80 µm
Width Range
10.8-14.7 µm
Striae in 10 µm

Stauroneis thompsonii

Bahls 2012

Stauroneis thompsonii LM6 Stauroneis thompsonii LM5 Stauroneis thompsonii LM4 Stauroneis thompsonii LM3 Stauroneis thompsonii LM2 Stauroneis thompsonii LM1
Length Range
81-124 µm
Width Range
16.3-23.5 µm
Striae in 10 µm

Stauroneis finlandia

Bahls 2010

Stauroneis finlandia LM2 Stauroneis finlandia LM1 Stauroneis finlandia LM5 Stauroneis finlandia LM4 Stauroneis finlandia LM3 Stauroneis finlandia LM7 Stauroneis finlandia LM6
Length Range
109-221 µm
Width Range
24-34 µm
Striae in 10 µm

Also compare to

Stauroneis subhyperborea

Van de Vijver and Lange-Bert. 2004