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Navicula antonii is generally smaller and finer than N. menisculus. Several varieties of the latter exist that must be carefully separated from N. antonii. Navicula reichardtiana is linear-lanceolate with rostrate ends. Navicula veneta is more linear-rhombic in shape with somewhat protracted, rostrate ends.

LM scalebar = 10 µm
Navicula antonii LM6 Navicula antonii LM7 Navicula antonii LM5 Navicula antonii LM3 Navicula antonii LM4 Navicula antonii LM2 Navicula antonii LM1
Length Range
10-23.8 µm
Width Range
4.2-7.3 µm
Striae in 10 µm
16-22

Navicula metareichardtiana

Lange-Bert. and Kusber 2019

Navicula reichardtiana LM4 Navicula reichardtiana LM1 Navicula reichardtiana LM2 Navicula reichardtiana LM5 Navicula reichardtiana LM3 Navicula reichardtiana LM7 Navicula reichardtiana LM6
Length Range
12-22 µm
Width Range
4.5-5.3 µm
Striae in 10 µm
14-16

Navicula veneta

Kütz. 1844

Gc112144  Nrsa0167  Naven4 Gc112144  Nrsa0167  Naven7 Gc112144  Nrsa0167  Naven1 Gc112144  Nrsa0167  Naven5 Gc112144  Nrsa0167  Naven6 Gc112144  Nrsa0167  Naven3 Gc112144  Nrsa0167  Naven2
Length Range
17-26 µm
Width Range
4.4-5.3 µm
Striae in 10 µm
14-15 in the center valve

Also compare to

Navicula menisculus

Schum.