Microworld

world of amoeboid organisms

Menu

Genus Glaeseria Volkonsky, 1931

Diagnosis: Locomotive form thin and up to 70 µm in length with a tendency to temporarily branch. Pseudopodia frequently with a thin hyaline cap. No cytoplasmic crystals. Posterior contractile vacuole(s) and knob-like uroid sometimes with a few trailing filaments. Cysts of free-living species with smooth inner wall and sticky outer coating, uninucleate to trinucleate.
Distinguish from Hartmannella on the basis of ultrastructural features: larger (30 nm) surface cup-like structures and no elongate mitochondria.

Type species: Glaeseria mira (Glaser, 1912)

Ecology: Freshwater and the intestine of Testudo.

Recent posts

Arcella marginata

Arcella marginata, after Deflandre, 1929 Arcella marginata Daday, 1905 Diagnosis: Shell roughly hemispherical, rather overhanging, with a flattened, smooth edge. In dorsal view showing a

Read More »

Arcella lobostoma

Arcella lobostoma, after Deflandre, 1929 Arcella lobostoma Deflandre, 1929 Diagnosis: Shell hemispherical. In ventral view, irregular circular outline, often a little elliptical; pseudostome irregularly lobed:

Read More »

Pelomyxa video

Pelomyxa palustris Pelomyxa palustris, found below decaying leaves in the hollow of a beech Pelomyxa palustris, found below decaying leaves in the hollow of a

Read More »

Hoogenraadia galeata

H. galeata – from Stepanek, 1963 Hoogenraadia galeata  (Stepanek, 1963) n. comb. Gillardella galeata Stepanek, 1963 Diagnosis: Shell somewhat similar to the shell of Corythion dubium

Read More »

Arcella grospietschi

Arcella grospietschi, after Stepanek, 1963 Arcella grospietschi  Stepanek, 1963 Diagnosis: Shell disc-shaped, yellow-brown, in ventral view with a undulated border, with seven large and seven smaller

Read More »

Arcella oyei

Arcella oyei, after Stepanek, 1963 Arcella oyei  Stepanek, 1963 Diagnosis: In dorsal view, the shell is circular, with 10 apparent broken lobes on the surface. In

Read More »