Cryptodifflugia angusta  (Schönborn, 1965) Page, 1966
Difflugiella angusta  Schönborn, 1965

Diagnosis: Shell small, organic, elongated-ovate, not transparent, yellow-brown, covered with rare mineral particles. Apical region can be slightly elongated in lateral view. Aperture circular, very small.

Dimensions: Shell length 17.0–20.4 μm, shell width 11.9–13.6 μm, aperture diameter 2.7–3.8 μm.

Ecology and distribution: Freshwater, recorded on Typha. Bulgaria, Poland, Germany.

Reference: Bobrov, A., Mazei, Y., 2017. A review of testate amoeba genus Cryptodifflugia Penard, 1890 (Phryganellina: Cryptodifflugiidae) with a key to species. Zootaxa 4282 (2): 292–308.