world of amoeboid organisms

Menu
Cyclopyxis humilis
Cyclopyxis humilis after Bonnet, 1962

Cyclopyxis humilis Bonnet, 1962

Diagnosis: Very small test, clear yellow ocre, of general appearance reminding, in dorsal view, Phryganella acropodia; however, in lateral view, the ventral surface appears sharply inflected and connects almost angularly to the sides of the test, but without showing an angle as sharp as that of Cyclopyxis kahli Defl. In ventral view, pseudostome reduced, almost circular and fairly regular outline. Test transparent, embedded with fine quartz particles separated by finely punctured cement; sometimes with debris of diatoms.

Dimensions: Test diameter; 40–45 µm; height: 38–40 µm; pseudostome: 10-12 μm.

Ecology: Soil, near Lagune de Francisco Moreno, Patagonia, South-America.

Remarks: Due to its size, this species may at first glance be mistaken for Cyclopyxis arcelloides var.  gibbosa Van Oye and Cyclopyxis arcelloides var. ghesquierei Kufferath. It can be distinguished from these last two by the size of the pseudostome and the shape of the ventral surface.

Recent posts

Haplomyxa saranae

Haplomyxa saranae Dellinger, 2014 Diagnosis: cell body from small rounded (0.1 mm) to large elongated shape (up to 3.5 x 0.3 mm), usually flat but

Read More »

Haplomyxa spec.

Main cell body Haplomyxa spec. Description: The cell has a central body from which numerous granuloreticulopodia emerge. The cell body can be small or large,

Read More »

Haplomyxa spec.

Haplomyxa spec. These video’s show an undescribed Haplomyxa species which was collected from a mesotrophic freshwater pond in the Netherlands, January 2020, and kept in Petri

Read More »

Chlamydophrys-schaudinn

Fritz Schaudinn (1871 – 1906) was a German zoologist. He was the co-discoverer of the causative agent of syphilis and did research on amoebas, particularly

Read More »

Alabasta longicollis

Alabasta longicollis, after Penard, 1890 Alabasta longicollis  (Penard, 1890) Diagnosis: Test pyriform, very elongated (3 times as long as wide), transparent, very little compressed, embedded

Read More »

Alabasta kivuense

Alabasta kivuense, after Gauthier-Lièvre and Thomas, 1961 Alabasta kivuense  Gauthier-Lièvre and Thomas, 1961 Diagnosis: In frontal view, the test is finger-shaped with subparallel sides, the

Read More »