Difflugia mica Frenzel 1892
Diagnosis: Test ovoid, organic, loosely covered with small mineral platelets.
Dimensions: Length 35-40 µm; width 25 µm.
Ecology: Freshwater, pond. Cordoba.
Remarks: The description was made after one single specimen.
Difflugia mica var. anulata Schönborn, 1962
It differs from the typical form by the presence of a thick cushion around the mouth. The length of the test is 40–50 µm, the width of the test is 34–36 µm, the diameter of the pseudostome is 16–22 µm.