Cryptodifflugia angusta  (Schönborn, 1965) Page, 1966
Syn.: Difflugiella angusta  Schönborn, 1965

Diagnosis: Shell small, organic, elongated‑ovate, opaque, yellow‑brown, covered with sparse mineral particles. Apical region may be slightly elongated in lateral view. Aperture circular and 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: Freshwater; recorded on Typha.

Distribution: Known from Bulgaria, Poland, and Germany.

References: 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

hell 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.