This small, delicate diatom may have been overlooked in surveys of North American waters. Kraskella manguinii is known from Peru, Columbia and Ecuador and is larger (13-27 µm in length, 2.5-3.1 µm in width, 20-23 striae in 10 µm). In addition, the striae of K. manguinii are parallel. Further work may show a close relationship to species in the genus Chamaepinnularia, as the striae are composed of a single elongate areola in both genera. The primarily marine genus Berkeleya includes the species B. rutilans, which has also has a short raphe system and similar striae.

LM scalebar = 10 µm
Dimples 1 14380 Clm Krasskella Kriegeriana 14380 3 Dimples 2 14380 2Of2 Clm Krasskella kriegeriana LM2 Krasskella Kriegeriana 14380 2
Length Range
12.9-15.1 µm
Width Range
1.2-1.6 µm
Striae in 10 µm

Also compare to

Kraskella manguinii

Lange-Bert. and Rumrich

Berkeleya rutilans

(Trentep. ex Roth) Grunow 1880