Compare Stauroneis terryi
Stauroneis acuta is very similar, except it is larger and has less gibbous valves. Stauroneis americana is also similar, with prominent pseudosepta at valve ends, but is generally smaller and has lanceolate valves. Stauroneis rex and S. phoenicenteron are also large, but lack conspicuous septa and pseudosepta.
LM scalebar = 10 µm
Length Range
154-388 µm
154-388 µm
Width Range
35-58 µm
35-58 µm
Striae in 10 µm
11-13
11-13
Length Range
121-175 µm
121-175 µm
Width Range
21-29 µm
21-29 µm
Striae in 10 µm
12-15
12-15
Length Range
136-214 µm
136-214 µm
Width Range
32-46 µm
32-46 µm
Striae in 10 µm
11-14
11-14
Length Range
215-386 µm
215-386 µm
Width Range
38-60 µm
38-60 µm
Striae in 10 µm
12-14
12-14
Length Range
129-199 µm
129-199 µm
Width Range
26-35 µm
26-35 µm
Striae in 10 µm
15-18
15-18
