Campascus cyphoderiformis  Chardez et Gaspar, 1984

Diagnosis: Test very clear, hyaline, consisting of endogenous scales of 1.2 µm in diameter, contiguous, embedded in a hyaline or yellowish organic cement. The shape is bulbous with a curved neck, circular in cross-section, as well as the pseudostome. The edge of the pseudostome is cut off at a right angle with a small flange about 1.5 to 2 µm wide.

Dimensions: Length 45-47 µm, Diameter 24-25 µm, pseudostome 8-9 µm.

Ecology: Freshwater. Sediment. Ardennes, Belgium.