Genus Ditrema De Saedeleer, 1934
Diagnosis: Shell hyaline, small, with one side fastened to the substrate; outline circular, irregular. Shell with two opposite apertures, each with a short neck. Pseudopodia granular, fine, extending along the substrate. Nucleus globular with a central nucleolus.
One described species: Ditrema mukrous De Saedeleer, 1934