23 (see text) Cryptodifflugia is a genus of arcellinid testate amoebae.

It contains all the species previously grouped as the genus Difflugiella, which is now a synonym of Cryptodifflugia.

[2][3] Cryptodifflugia species are characterized by a shell with an oval egg-like shape with a short neck.

The shell can be colorless, yellow or brown, composed of an outer proteinaceous material that is usually lined.

They present pseudopods in the form of ectoplasmic anastomosing reticulopods, i.e. like fine threads that can branch or anastomose (meaning they can form links with each other) to create a dense network.