Stauroneis intricans has a smaller maximum size, straight proximal raphe ends, and higher areola density. Stauroneis jarensis has straight proximal raphe ends and expanded proximal pores. Stauroneis anceps has more narrow apices. Stauroneis fluminea and S. pergracilis have straight proximal raphe ends and generally larger valves, although size ranges of the three species do overlap. Stauroneis vandevijveri has more lanceolate valves and straight proximal raphe ends.

LM scalebar = 10 µm
Stauroneis acidoclinata LM7 Stauroneis acidoclinata LM6 Stauroneis acidoclinata LM5 Stauroneis acidoclinata LM3 Stauroneis acidoclinata LM2 Stauroneis acidoclinata LM1
Length Range
35-70 µm
Width Range
7.4-11.5 µm
Striae in 10 µm

Stauroneis anceps

Ehrenb. 1843

Stauroneis anceps LM7 Stauroneis anceps LM6 Stauroneis anceps LM5 Stauroneis anceps LM2 Stauroneis anceps LM4 Stauroneis anceps LM3 Stauroneis anceps LM1
Length Range
48-76 µm
Width Range
12-15 µm
Striae in 10 µm

Stauroneis vandevijveri

Bahls 2010

Stauroneis vandevijveri LM2 Stauroneis vandevijveri LM1 Stauroneis vandevijveri LM3 Stauroneis vandevijveri LM5 Stauroneis vandevijveri LM4
Length Range
48-73 µm
Width Range
9.5-12.5 µm
Striae in 10 µm

Also compare to

Stauroneis intricans

Van de Vijver and Lange-Bert.

Stauroneis jarensis


Stauroneis fluminea

R.M.Patrick and Freese

Stauroneis pergracilis

Van de Vijver and Lange-Bert.