A review of testate amoeba genus Cryptodifflugia Penard, 1890 (Phryganellina: Cryptodifflugiidae) with a key to species Author Bobrov, Anatoly Author Mazei, Yuri text Zootaxa 2017 4282 2 292 308 journal article 28745 10.11646/zootaxa.4282.2.4 8265bc1a-8903-47d1-a59d-218d749895e5 1175-5326 818668 CB1CD0B8-797B-4F2D-B100-C12E20AA092E C. compressa Penard, 1902 Figs 3 a, 3b, 3c, 3d, 3e, 3f Original description. Penard 1902 , P. 428, Figs 1–3 . Description. Shell small, ovate or widely elliptical, yellowish-brown, transparent, laterally compressed, elliptical in transverse section, surface smooth, without mineral inclusions, aperture circular or elliptical, very small, surrounded by an organic lip. Measurements. Shell length 13–21 µm, shell width 9–21 µm. Habitat. Freshwater, Sphagnum mosses, soil. Geographical distribution. Cosmopolitan.