Diploneis galloprovincialis guide
  1. Valves linear-elliptic
  2. Longitudinal canals linear
  3. Valve width 7.5-8.0
  4. Striae 20-21 in 10 µm

Valves are linear-elliptic. Striae are parallel to slightly radiate, 20-21 in 10 µm. The longitudinal canal is linear. Areolae are not distinguishable in LM.