Compared to Mayamaea atomus, Fistulifera spp. and Navicula subminuscula, C. molestiformis has parallel striae throughout the valve, a straight raphe, and is larger than 10 µm. The areolae can be resolved in N. subminuscula in LM, but are not discernable in C. molestiformis. The apices of C. submolesta are capitate in comparison to the more rounded or subrostrate apices of C. molestiformis.

LM scalebar = 10 µm
C Molestiformis Pic3 101708A 5Mv Craticula molestiformis LM2 Cmolestiformis1 102984B  33 8 116 5 Mm 1000X Craticula molestiformis LM3 C Molestiformis Pic2 107097B 12Mv Craticula molestiformis LM1 C Molestiformis Pic5 107097B 2Ss
Length Range
12-15 µm
Width Range
3.4-4.9 µm
Striae in 10 µm

Craticula subminuscula

(Manguin) C.E.Wetzel and Ector 2015

Craticula subminuscula LM2 Craticula subminuscula LM5 Craticula subminuscula LM7 Craticula subminuscula LM1 Craticula subminuscula LM6 Craticula subminuscula LM4 Craticula subminuscula LM3
Length Range
7.3-10.5 µm
Width Range
3.3-5.0 µm
Striae in 10 µm

Also compare to

Mayamaea atomus

(Kütz.) Grunow

Fistulifera spp.