Arcuatasigma

Arcuatasigma is a genus of diatoms belonging to the family Pleurosigmataceae.
The genus is characterized by striae, both longitudinal and transapical, and a 180 degree twist in the frustule.

Species

Accepted species:Arcuatasigma addu Arcuatasigma arenicolum Arcuatasigma belizense Arcuatasigma castracanense Arcuatasigma closterioides