Difflugia papillomata Gauthier-Lièvre & Thomas, 1958

Diagnosis: In side view, shell neatly oval or ovoid, almost perfect; pseudostome with a transparent collar, about 1/10 of the length of the shell, while the shell itself is brownish and little hyaline. Shell covered with endogenous material, formed of small platelets regularly arranged, not protruding. Pseudostome well drawn, with 5 regular rounded lobes; pseudostomal edge ornamented by a kind of necklace made of tiny elements. Only empty test were observed.

Dimensions: Gauthier-Lièvre and Thomas (1958): Shell length 105 µm (incl. col); width 68 µm; height of the collar: 10 µm; pseudostome: 30 µm.

Ecology: Freshwater. Sudan: Floodplain of the Niger at Gao marshes.

Remarks: According to Gauthier-Lièvre & Thomas, 1958, this species is quite close to D. lobostoma var. multilobata; it can be distinguished easily by the presence of the high and lobed collar.