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Navicula vulpina is similar to N. walkeri in size, shape, and ecology, but N. vulpina lacks longitudinal lines. Navicula subwalkeri is more narrow, has a smaller central area, protracted apices, curved striae and a higher areola density.

LM scalebar = 10 µm
Navicula walkeri LM5 Navicula walkeri LM4 Navicula walkeri LM3 Navicula walkeri LM2 Navicula walkeri LM1
Length Range
114-154 µm
Width Range
24-28 µm
Striae in 10 µm
9-10

Navicula vulpina

Kütz. 1844

Navicula vulpina LM2 Navicula vulpina LM1 Navicula vulpina LM3 Navicula vulpina LM5 Navicula vulpina LM4
Length Range
85-110 µm
Width Range
17-19 µm
Striae in 10 µm
5-6 at the center, 6-8 at the ends

Navicula subwalkeri

L.L.Bahls and Potapova 2015

Navicula subwalkeri LM7 Navicula subwalkeri LM4 Navicula subwalkeri LM3 Navicula subwalkeri LM2 Navicula subwalkeri LM1 Navicula subwalkeri LM5 Navicula subwalkeri LM6
Length Range
94-165 µm
Width Range
17-27 µm
Striae in 10 µm
8-11