Cryptodifflugia compressa ovata Playfair, 1917
Diagnosis: Shell differs from the typical form by more elongated and widely ovate shell and by the absence of organic lip around an aperture.
Dimensions: Shell length 19 μm, shell width 17–18 μm.
Ecology and distribution: Aquatic plants and wetlands. Australia.
Reference: 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.