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 key ovoid

Difflugia Group 1 Key characters: Test < 60 µm. Test in cross section rounded. Test with rounded fundus. Pseudostome with smooth circular edge. Test not

Read More »

Difflugia: ovoid tests

Difflugia – group 1 Test < 60 µm. Test in cross section rounded. Test with rounded fundus. Pseudostome with smooth circular edge. Test not spherical

Read More »

Difflugia ampla

Difflugia ampla, after Rampi, 1950 (l) and Gauthier-Lièvre et Thomas, 1958 (r) Difflugia ampla Rampi, 1950 Diagnosis: Test broadly pyriform, with a wide and rounded

Read More »

Difflugia parva

Difflugia parva, from Gauthier-Lièvre et Thomas, 1958 Difflugia parva  (Thomas, 1954) Ogden, 1983 = Difflugia oblonga var. parva Thomas, 1954 Diagnosis: Test pyriform, tapering evenly from

Read More »