Microworld

world of amoeboid organisms

Menu
Pyxidicula patens var.
Pyxidicula spec., Das Rotes Wasser, Germany

Pyxidicula spec.

Diagnosis: Shell a spherical dome where the height of the cap is longer than the radius of the sphere; wall double layered with alveoli in between. Dorsal part usually with some undulations. Shell clearly punctuated, colorless to yellow and brown. Aperture smaller than the diameter of the shell, surrounded by a somewhat broadened rim. Cytoplasm doesn’t fill the shell completely, nucleus spherical, with some scattered nucleoli.

Dimensions: My measurements: diameter 51-57 µm (n=10), height 39-42 µm, nucleus 19 µm (n=1).

Ecology: freshwater, in Sphagnum from Das Rotes Wasser, Germany. Not rare.

Pyxidicula spec.
Apertural view; left: detail of the shell wall
Pyxidicula spec.
Pyxidicula spec., lateral view
Pyxidicula spec.
Pyxidicula spec.
Pyxidicula spec., with very broad membrane like structure and in lateral view
Pyxidicula patens var.
Pyxidicula patens var.
Pyxidicula cf gibbosa, notice the double wall – 56 µm
Pyxidicula spec.
Pyxidicula spec., arrows indicate the nucleus.
Pyxidicula spec.
Specimen, dividing. The older (brown) shell is larger than the new shell. The aperture of the older cell is surrounded by a wrinkled membrane (a); the aperture of the younger cell is also surrounded by a membrane (b,c) but it isn’t clear to which cell this belongs.
Pyxidicula spec.
Pyxidicula spec.
Recent posts

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 »

Difflugia mulanensis

D. mulanensis, after Yang et al., 2015 Difflugia mulanensis Yang, Meisterfeld, Zhang and Shen, 2015 Diagnosis: Shell elongate ovoid like a vase, with a distinct

Read More »

Euglypha bryophila

Euglypha bryophila, after Brown, 1911 (L), from Ecuador (R) Euglypha bryophila  Brown, 1911 Diagnosis: (Original description) The test is very regular in form and subject

Read More »

Vernalophrys

(A) A Scenedesmus cell (arrow) is engulfed by a trophozoite. (B) Several Scenedesmus cells adhere to the surface of a plasmodium that has numerous vacuoles

Read More »