Microgromia parvisaepimen De Saedeleer, 1934
Diagnosis: Shell hyaline, small, nearly spherical double-sided symmetrically, with one side fastened to the substrate; outline circular, smooth or irregular. Shell without neck. Septum short, oriented from left to right, hard to observe or not present. Aperture small. Cytoplasm asymmetrical, with a bundle of pseudopodia. Pseudopodia granular, very thin, and anastomosing, thus forming a network. Nucleus globular with a central nucleolus. One contractile vacuole.
Dimensions: De Saedeleer (1934): shell 10.2-10.3 µm. My measurements: 10-15 µm.
Ecology: in iron rich water.
Remarks: the description of this species by De Saedeleer (1934) is based on the observation of one single specimen.