Diatoms of North AmericaDiatoms of North America
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Compare Craticula subminuscula

(Manguin) C.E.Wetzel and Ector 2015

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Craticula subminuscula is shorter with more radiate striae and a thicker axial area than C. molestiformis. Craticula subminuscula can be confused with Karayaevia suchlandtii because of the thickened axial area on the raphe valve. The latter, however, can be distinguished by rounded ends and presence of the rapheless valve. Mayamaea agrestis has narrower valves and shortened striae in the middle portion of the valve.

LM scalebar = 10 µm
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
20-28

Karayevia suchlandtii

(Hust.) Bukht. 0

Gsn23387 Karsuchl 2 Ed Mo000019 1A Ed 4 Karayevia suchlandtii LM1 Gsn23387 Karsuchl 1A Ed Gsn23387 Karsuchl 1B Ed Karayevia suchlandtii LM3 Karayevia suchlandtii LM2
Length Range
7-15 µm
Width Range
3.6-5.3 µm
Striae in 10 µm
18-20

Craticula molestiformis

(Hust.) Mayama 1999

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
24-34

Also compare to

Mayamaea agrestis

(Hust.) Lange-Bert.