Compare

Gomphoneis minuta is easily confused with G. herculeana, which is usually longer and comparatively wider. It should also be compared to G. herculeana var. abundans, which is similar in breadth, but much longer.

LM scalebar = 10 µm
Minuta 005 Minuta 002 Minuta 001 Minuta 003 Minuta 004
Length Range
20-128 µm
Width Range
14-26 µm
Striae in 10 µm
10-12

Gomphoneis herculeana

(Ehrenb.) Cleve 1894

Herculeana 001 Herculeana 004B Herculeana 004A Herculeana 006 Herculeana 002 Herculeana 003 Herculeana 005
Length Range
50-165 µm
Width Range
22-34 µm
Striae in 10 µm
8-12 in the central valve, 12-14 at the headpole, 13-16 at the footpole

Gomphoneis herculeana var. abundans

Kociolek and Stoermer 1988

Gomphoneis herculeana var. abundans LM2 Gomphoneis herculeana var. abundans LM5 Gomphoneis herculeana var. abundans LM4 Gomphoneis herculeana var. abundans LM3 Gomphoneis herculeana var. abundans LM1
Length Range
76-160 µm
Width Range
16-25 µm
Striae in 10 µm
12-14 at the headpole, 13-16 at the footpole