Cryptodifflugia pusilla var. conica   Playfair, 1917

Diagnosis: Differs from the typical form by its more elongated shape. Shell conical or broadly oval, with a rounded aboral region. Apertural side equal in width to the shell.

Dimensions: Playfair (1917): shell length 12 μm; shell width 10 μm.
Own measurements (Odenwald, Germany): length 7.7–11.3 μm.

Ecology: Freshwater; on vegetation.

Distribution: Australia; Germany.

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.