Stauroneis angustilancea is larger and has more widely spaced striae and areolae than S. anceps.

LM scalebar = 10 µm
Length Range
79-125 µm
Width Range
15-21 µm
Striae in 10 µm
15-20
Stauroneis angustilancea LM7
Stauroneis angustilancea LM6
Stauroneis angustilancea LM5
Stauroneis angustilancea LM4
Stauroneis angustilancea LM3
Stauroneis angustilancea LM2
Stauroneis angustilancea LM1
Stauroneis angustilancea LM7 Stauroneis angustilancea LM6 Stauroneis angustilancea LM5 Stauroneis angustilancea LM4 Stauroneis angustilancea LM3 Stauroneis angustilancea LM2 Stauroneis angustilancea LM1

Stauroneis anceps

Ehrenb. 1843

Length Range
48-76 µm
Width Range
12-15 µm
Striae in 10 µm
19-21
Stauroneis anceps LM7 Stauroneis anceps LM6 Stauroneis anceps LM5 Stauroneis anceps LM2 Stauroneis anceps LM4 Stauroneis anceps LM3 Stauroneis anceps LM1