world of amoeboid organisms

Acanthocystis wiasemskii
from Mikrjukov, 2002

Acanthocystis wiasemskii Ostroumoff, 1917

Diagnosis: Cells are 25-30 µm in diameter with plate-scales and one type of spicules in the periplast. Spicules are of the equal length, 12–15 µm, nail-shaped; the shaft is hollow, straight, 0.6 µm in diameter, of monotonous thickness, abruptly tapers on the apical end towards the pointed apex; the base-plate is rounded, about 2.5 µm in diameter. Plate-scales are about 4.0–5.0 x 2.0–2.5 µm, bean-shaped, with a fine granular apical surface.

Ecology: Marine. Black sea, Tasmanian Sea, marine aquaria in Moscow.

from Mikrjukov, 2002
Recent posts


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 »

Paulinella micropora

Paulinella micropora, – from Lhee et al., 2017 Paulinella micropora Lhee, Yang, Kim, Andersen & Yoon, 2017 Diagnosis: Test elongate, with five columns of scales,

Read More »

Quadrulella tubulata

Quadrulella tubulata, after Gauthier-Lièvre, 1953 Quadrulella tubulata  Gauthier-Lièvre, 1953 Diagnosis: Shell almost lageniform, compressed, with rounded fundus and more or less irregularly arranged, commonly small,

Read More »

Quadrulella elongata

Quadrulella elongata, after Van Oye, 1952 Quadrulella elongata  Van Oye, 1952 Diagnosis: Test elongated with long neck and square plates, without any pores. Pseudosome slightly

Read More »