Lithocolla flavescens
Lithocolla flavescens

Lithocolla flavescens Penard, 1904

Diagnosis: amoeba surrounded by a thin layer of small irregular mineral grains, fixed on a thin flexible membrane; numerous fine smooth filopodia, without any granules which are so typical for true heliozoans; plasmbody usually with a yellowish color. Nucleus vesicular with central nucleolus. Fast movement.

Dimensionsc. 10 µm.

Ecology: I have sampled this species in the marshes of Kortenhoef and in a small river in Neer, in the southern part of the Netherlands.

Remarks: this amoeba can move fast, but doesn’t have a rolling movement like true heliozoans.  The taxonomic status of this species is uncertain.

Lithocolla flavescens
Lithocolla flavescens, Radiopoel Kootwijk
Lithocolla flavescens
Recent posts

Difflugia symoensi

Difflugia symoensi, from Chardez, 1964 Difflugia symoensi  Chardez, 1964 Diagnosis: Test bag-shaped, with pseudostome almost as wide as the width of the test; fundus rounded.

Read More »

Difflugia tenuis

Difflugia tenuis, from Penard, 1890 Difflugia tenuis  (Penard, 1890) Chardez, 1983 Diagnosis: Test cylindrical or slightly pyriform, fundus often more angular then rounded, very transparent

Read More »

Difflugia gigantea

Difflugia gigantea (left) compared with other species to show its size Difflugia gigantea Schlumberger, 1845 Diagnose: test ovoid, elongated, narrowed anteriorly, almost pyriform, sometimes slightly

Read More »

Difflugia masaruzzii

  Difflugia manicata, test and nucleus – after Van Oye, 1958   Difflugia masaruzzii  Van Oye, 1958 Diagnosis: Test more or less ovoid with lateral

Read More »