Nupela Fennica Guide
Credit: Marina Potapova
  1. Valves linear-elliptical
  2. Central area rectangular fascia
  3. Striae 35-40 in 10 μm

Valves are linear-elliptical with subrostrate ends. Axial area is narrowly linear. Central area is rectangular fascia. Striae are radiate in the middle, parallel or slightly convergent at apices, 35-40 in 10 mm.