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. angustastoma Beyens et Chardez, 1982 Figs 1 e, 1f Original description. Beyens and Chardez 1982 , P. 171, Figs 1–2 . Description. Shell oval or broadly ovoid, laterally compressed, chitinous, transparent, with hyaline surface, smooth, without mineral particles. Aperture oval, surrounded by a small collar. Measurements. Shell length 45–63 µm, shell width 40–48 µm, aperture diameter 8–10 µm. Habitat. Freshwater. Geographical distribution. Belgium.