world of amoeboid organisms

Difflugia lucida
Difflugia lucida, in frontal and lateral view; moss, Netherlands

Difflugia lucida Penard, 1890

Diagnosis: Shell hyaline, more or less U-shaped and strongly compressed, covered with flat quartz particles. Living individuals accumulate mainly inorganic material round the elliptic aperture. This aggregation of particles is probably drawn into the shell when the amoebae encysts and is lost when the cell dies. Nucleus ovular, about 10 µm in diameter, with a number of irregularly shaped nucleoli. Pseudopodia relatively thin.

Dimensions: ca. 64-70 µm; Penard (1902): 50-60 µm, up to 65 µm.

Ecology: Freshwater, soil and mosses. A common species, cosmopolitan.

Difflugia lucida, nuclei arrowed
Difflugia lucida
Difflugia lucida, 64 and 68 µm
Difflugia lucida
Difflugia lucida

Difflugia lucida, , dry moss, the Netherlands

Difflugia lucida
Difflugia lucida
Difflugia lucida, 68 µm, Crailoo, the Netherlands and, Difflugia lucida, 70 µm, Tirol, Austria
Difflugia lucida
Difflugia lucida
Difflugia lucida, right: lateral view, 70 µm – Tirol, Austria, and aperture of the specimen to the left.
Difflugia lucida
The same shell as above; note the darker grains around the pseudostome.
Difflugia lucida, both c. 60 µm, xerophyle moss, Germany
Difflugia lucida
Drawing: Penard (1902) in Faune Rhizopodique du Bassin du Leman
Difflugia lucida
Stacked image partly showing the covering with flat xenosomes
Difflugia lucida
Two living cells of Difflugia lucida – Photomicrography Angie Opitz, Austria.
Ferry Siemensma, created February 23, 2019; last modified March 22, 2021
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