Diploneis Ovalis Guide
Credit: Loren Bahls
  1. Valves elliptic-oval
  2. Central area large
  3. Striae uniseriate
  4. Longitudinal canals narrow

Valves are elliptic to oval and up to 33 µm wide. Central area is large and orbicular, up to 8.5 µm wide. Striae are uniseriate and radiate throughout. Longitudinal canals are narrow.