Difflugia manicata Penard, 1902
Diagnosis: Test ovoid, covered with neatly arranged mineral grains. A broad region (1/3 of the shell) of the anterior part of the shell is covered with much larger particles. Aperture small and circular. Nucleus with central compact nucleolus with small lacunae.
Dimensions: Length 60-88 µm, width 37-54 µm, apertural diameter 12-20 µm, nucleus 13 µm.
Ecology: Freshwater. In sediment. Switzerland.