Cryptodifflugia compressa australis   Playfair, 1917

Diagnosis: Shell compressed, oval; differing from the typical form by having a shell width slightly exceeding its length. Shell surface smooth, lacking mineral inclusions.

Dimensions: Shell length 16–19 μm; shell width 18–21 μm.

Ecology: On aquatic plants and in wetlands.

Distribution: Australia.

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.