Cryptodifflugia compressa angustioris  Tarnogradsky, 1959

Diagnosis: Shell differing from the typical form by its more elongated shape, with an oval aperture; laterally compressed; golden‑brown.

Dimensions: Shell length 19–20 μm; shell width 15–17 μm.

Ecology: In Sphagnum.

Distribution: Russia (Caucasus); Belgium; Germany; Spitsbergen.

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.