Microworld

world of amoeboid organisms

Menu
Ditrema mukrous
Ditrema mukrous, empty shell

Ditrema mukrous De Saedeleer, 1934

Diagnosis: Shell hyaline, small, with one side fastened to the substrate, with an open base, resembling an iglo; outline circular, often irregular. Shell usually with two opposite apertures, each with a short neck. Young shells colorless, older shells yellow to brown. Pseudopodia granular, fine, extending along the substrate. Nucleus globular with a central nucleolus.

Dimensions: De Saedeleer 12-14 µm; my measurements: 21-28 µm, from aperture to aperture; 9-15 µm in diameter.

Ecology: in water with Sphagnum-contact. Diepveen, Crailoo, Laegieskamp the Netherlands.

Ditrema mukrous
Diagram of Ditrema mukrous. The shell resembles an iglo with two apertures; there is no bottom.
Ditrema mukrous
Ditrema mukrous
Ditrema mukrous
Ditrema mukrous
Ditrema mukrous
Ditrema mukrous
Ditrema mukrous
Ditrema mukrous
Ditrema mukrous
Ditrema mukrous
Ditrema mukrous
All above shells are from the same sample. It shows the variation in shape and color. One shell has three apertures.
Ditrema mukrous
Ditrema mukrous
Apertural view and side view (right): the test resembles an iglo.
Ditrema mukrous
This specimen with one aperture was present in the same wet-mount as the two specimens above. No other specimens were present after two weeks in a wet chamber. It is likely that this specimen is a Ditrema mukrous with one aperture.
Ditrema mukrous - Ferry Siemensma
Ditrema mukrous
Recent posts

Bullinularia maxima

Bullinularia maxima – from Bobrov and Mazei, 2020 Bullinularia maxima Bobrov et Mazei, 2020 Diagnosis: Shell brown, opaque, elliptical in ventral view; ventral surface is

Read More »

Bullinularia macroporum

Bullinularia macroporum – from Bobrov and Mazei, 2020 Bullinularia macroporum Bobrov et Mazei, 2020 Diagnosis: Shell yellow-brownish, transparent, circular in ventral view; ventral surface is

Read More »

Nebela golemanskyi

N. golemanskyi, after Todorov, 2010 Nebela golemanskyi Todorov, 2010 Diagnosis: Shell large, colourless and pyriform, with a distinct short neck about one fourth of the

Read More »

Nebela nebeloides

N. nebeloides, after Gauthier-Lièvre and Thomas, 1958 Nebela nebeloides (Gauthier-Lièvre and Thomas, 1958) Todorov et al., 2010 Basionym: Difflugia nebeloides Gauthier-Lièvre and Thomas, 1958 Diagnosis:

Read More »

Difflugia biwae

D. biwae, after Yang and Shen, 2005 Difflugia biwae Kawamura, 1918 Diagnosis: Shell in lateral view fusiform in outline with a straight neck, a conspicuous

Read More »