Microgromia minor De Saedeleer, 1934
Diagnosis: Shell hyaline, spherical till ovoid, small, with one side fastened to the substrate; shell with a distinct neck. Septum distinct.
Dimensions: De Saedeleer (1934): shell 14.5-25.5 µm; Kreutz (2012): 14-18 µm; Yana Eglit (pers. comm.) c. 16 µm.
Remarks: This species has not been reported for the Netherlands yet.