Trinema is a genus of testate amoeba in the phylum Cercozoa.

[2] Species of Trinema are common in freshwater and terrestrial habitats.

Trinema is a filose amoeba, meaning it moves via filopodia.

[1] Species are distinguished based on the size and shape of the test and aperture.

Species show considerable variation in morphological characteristics, which makes them more difficult to identify.