Kobayasiella okadae and K. subtilissima have wider valves (>5.0 µm wide). Kobayasiella micropunctata has a smaller length-to-width ratio (4.9-6.0).

LM scalebar = 10 µm
Length Range
25-42 µm
Width Range
4.0-4.7 µm
Striae in 10 µm
cannot be resolved in LM
Kobayasiella parasubtilissima LM1
Kobayasiella parasubtilissima LM2
Kobayasiella parasubtilissima LM3
Kobayasiella parasubtilissima LM4
Kobayasiella parasubtilissima LM5
Kobayasiella parasubtilissima LM6
Kobayasiella parasubtilissima LM1 Kobayasiella parasubtilissima LM2 Kobayasiella parasubtilissima LM3 Kobayasiella parasubtilissima LM4 Kobayasiella parasubtilissima LM5 Kobayasiella parasubtilissima LM6

Kobayasiella micropunctata

(H.Germ.) Lange-Bert. 1999

Length Range
19-23 µm
Width Range
3.5-4.3 µm
Striae in 10 µm
difficult to resolve in LM
Kmicro1 Kmicro2 Kmicro3 Kmicro4 Kmicro5 Kmicro6 Kmicro7

Kobayasiella subtilissima

(Cleve) Lange-Bert. 1999

Length Range
23-27 µm
Width Range
5.1-6.0 µm
Striae in 10 µm
36-40, 30-36 in center
Ksub1 Ksub2 Ksub3 Ksub4 Ksub5

Kobayasiella okadae

(Skvortzov) Lange-Bert. 1999

Length Range
31-37 µm
Width Range
7-9 µm
Striae in 10 µm
22-24 (middle), 36-38 (ends)
Kobayasiella okadae LM1 Kobayasiella okadae LM2 Kobayasiella okadae LM3 Kobayasiella okadae LM4 Kobayasiella okadae LM5