Note the fine filopodia which arise from the surface of the veil.

Genus Hyalodiscus Hertwig & Lesser, 1874

Diagnosis: Cells discoid with breadth greater than length. Extensive, flattened hyaline margin surrounding the cytoplasmic hump anteriorly and laterally and sometimes posteriorly. Locomotion frequently rapid with a distinctive rolling motion. Fine, short subpseudopodia extend from the hyaloplasm. Floating form with radiate pseudopodia. Cytoplasmic mass sometimes reddish brown or greenish in color with 1 or 2 nuclei.
At least 4 described species from freshwater and marine habitats.
Type species: Hyalodiscus rubicundus Hertwig & Lesser,  1874

Hyalodiscus rubicundus
Recent posts

Ditrema spec.

Ditrema spec. Ditrema spec. Diagnosis: Shell as with D. longicollis, but much smaller, surrounded by V-shaped structures that gave it the impression of a star.

Read More »

Rotosphaerida

Pompholyxophrys Pompholyxophrys Pompholyxophrys Rabdiophrys Rotosphaerida Rainer, 1968 Diagnosis: Aciliate predominantly spherical or flattened amoebae from which elongated actin-based filopodia extend; with flat discoid mitochondrial cristae;

Read More »

Centropyxis tabel

Key to Centropyxis species 1 Test in dorsal view circular or almost circular 2 – Test in dorsal view irregular due to various outgrows and

Read More »