Difflugia amphoralis Cash and Hopkinson, 1909
Diagnosis: Test transparent, short-topped, fundus pointed, sometimes with a short outgrowth. Covered with medium grains of sand. Contour relatively smooth, pseudostome round, surrounded by a border of small sand grains.
Dimensions: Length 109 µm, width 62 µm, aperture diameter 28 µm.
Ecology: Freshwater. Europe.