Pseudonebela heterodentata  (Dekhtyar, 1993)

Diagnosis: Shell transparent, mostly round, sometimes slightly laterally compressed, covered with flat, tightly packed grains of sand and fragments of diatoms. Pseudostome round, surrounded by a low, clear collar, on the inner surface of which 6-8 teeth are located, but there may be 12 large well-formed teeth and the “rudiments” of others in the form of a small tip or tubercle.

Dimensions: Length 88-105 µm, width 72-96 µm, neck 16-17 µm, pseudostome 30-46 µm. L/W 1.2.

Habitat: Freshwater.

Remarks: This species seems more compact than Pseudonebela rubescens and P. africana, to which it’s closely related.