Cryptodifflugia patinata   (Schönborn, 1965) Bobrov & Mazei, 2017

Diagnosis: Shell bowl‑shaped, with width exceeding length, transparent. Surface slightly corrugated, containing isolated xenosomes. Color yellowish‑brown to brown. Aperture circular.

Dimensions: Schönborn (1965): shell length 8.5–12.9 μm; width 11.5–14.0 μm; aperture diameter 7.0–11.0 μm.
Own measurements (Spiegelplas): length 12.2–14.3 μm; width 10.9–14.3 μm; aperture diameter 7.0–8.7 μm (n = 8).

Ecology: On Typha and Phragmites australis in lakes and bogs; also in lake sediments.

Distribution: Germany; Poland; Netherlands.

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.