Centropyxis dentistoma  (Decloitre, 1949)
Basionym: Centropyxis aculeata var. dentistoma Decloitre, 1949

Diagnosis: Aperture lobed, which bears 4 to 6, sometimes 7, sharp, strongly chitinized teeth, as well as the edge of the aperture, which is darker than the rest of the test and sometimes presents a double outline due to a true chitinous ridge that defines it.  The shell sometimes carries diatoms, is brown, but the horns are completely clear and transparent; it is lower in height than in the type.

Dimensions: According to Decloitre (1949): Shell diameter (without spines) 130—140 um; height 28—30 µm; pseudostome 50 µm; buccal depth 10 um; spines 20—44 µm.

Habitat: Freshwater.

Geographical distribution: Central Africa.

Remarks: This variety is probably identical to C. spinosa.