world of amoeboid organisms

Menu
Cyclopyxis eurystoma sinuosa
C. eurystoma var. sinuosa, after Decloitre, 1970

Cyclopyxis eurystoma var. sinuosa  Decloitre, 1970

Diagnosis:  The general aspect is that of the type species. To distinguish this variety, you have to look at the contour of the test, which is not always easy. In the type, the pseudostome is flat, while in the variety, it is wavy and the theca is relatively rich in large sticks that appear to be eroded diatoms.

Dimensions: Test diameter 35 µm, height 40-45 µm, pseudostome 20 um, oral depth 5-8 µm.

Ecology: Freshwater, between wet mosses in lakes and ponds. Haute Savoi, France.

Remarks: Difficult to specify, as it is almost certain that previous authors, not having had the opportunity to see similar tests in profile, could not distinguish this variety.

Recent posts

Spiculophrys

Genus Spiculophrys Zlatogursky, 2016 Diagnosis: Centrohelids lacking silica scales but with numerous thin, pointed organic (without any traces of silica) scales tapering towards acute apices. 18S

Read More »

Acanthocystis drakena

From Zlatogursky, 2016 Acanthocystis drakena Zlatogursky, 2016 Diagnosis: Cells are 21.1-30.5 µm (ca. 26.7) in diameter. Cell is covered with oval plate-scales having a margin

Read More »

Choanocystis symna

From Zlatogursky, 2014 Choanocystis symna Zlatogursky, 2014 Diagnosis: Cell body ca. 6.7 µm in diameter. Axopodia three–five times longer than a cell diameter. Plate-scales dumbbell-shaped

Read More »

Acanthocystis costata

From Zlatogursky, 2014 Acanthocystis costata Zlatogursky, 2014 Diagnosis: Cell body ca 9.5 µm in diameter. Axopodia 2–3 times longer than cell diameter. Length of spine-scales

Read More »

Kinetocyst

Left: ultra-structure of a kinetocyst of Raphidiophrys contractilis); right: two kinetocysts in an axopodium. Kinetocysts In centrohelid heliozoa, extrusomes are called kinetocysts, and are present

Read More »

Yogsothoth carteri

Yogsothoth carteri, after Shishkin and Zlatogursky, 2018 Yogsothoth carteri Shishkin and Zlatogursky, 2018 Diagnosis: Individual cells in a colony have a diameter of 9.7-15.2 µm;

Read More »