Cryptodifflugia valida  Playfair, 1917

Diagnosis: Shell large, ovoid, circular in transverse section; lateral sides gradually converging toward the aperture. Aperture circular and rather broad, with a well‑developed thickening around it.

Dimensions: Shell length 55 μm; shell width 40 μm; aperture diameter 15 μm.

Ecology: Freshwater ponds and bogs.

Distribution: Australia; Chile.

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.