Microworld

world of amoeboid organisms

Menu
Q. variabilis, Naardermeer

Quadrulella variabilis Kosakyan et al., 2016

Description. Test ovoid or pyriform, with a rounded posterior end, laterally compressed towards the pseudostome, very similar to that in Q. symmetrica, sometimes with an elongated neck. Test colorless, composed of square plates, regularly arranged in rows. The plates are smaller near the aperture (3-4 µm), then gradually become larger (up to 7-9 µm ) toward the posterior end of the test. Aperture often curved and bordered by a thin organic lip.

Dimensions: Length: 66-69 (96) µm, breadth: 35-40.5 (45) µm . Aperture 17- 18.5 µm wide (n=7). My measurements: L 71 µm, aperture 17 µm wide, plates 3.4-9.4 µm.

Ecology: Sphagnum mosses, Switzerland.

Remarks: The species has members with a variable neck length. The records from one location suggest rather a species complex than distinct intraspecific diversity.

Recent posts

Velamentofex

Velamentofex tyrolensis Family Velamentofexidae Völcker and Clauß, 2020 Diagnosis: Multinucleate organic-walled monothalamous foraminifera. Test spherical to pyriform, usually surrounded by a broad layer of mucus-like

Read More »

Claparedellus lachmannii

Claparedellus lachmannii, common shape (Riedensee) Claparedellus lachmannii  Khanipour Roshan and Clauß, 2020 Diagnosis: Multinucleate organic-walled monothalamous foraminifera. Test spherical to elongated pyriform or irregularly shaped, with a

Read More »

Claparedellus

Claparedellus lachmannii Genus Claparedellus Khanipour Roshan and Clauß, 2020 Diagnosis: Multinucleate organic-walled monothalamous foraminifera. Test spherical to elongated pyriform or irregularly shaped, with a hyaline, flexible,

Read More »

Haplomyxa spec

Fig. 1: Main cell body partly hidden by debris Haplomyxa sp. Three specimens were observed in one Petri dish. Usually the cell body was attached

Read More »

Edaphoallogromiidae

Edaphoallogromia australica Family Edaphoallogromiidae Siemensma, Holzmann, Apothéloz-Perret-Gentil, Clauß, Voelcker, Bettighofer, Khanipour Roshan, Walden, Dumack and Pawlowski, 2020 Diagnosis: Multinucleate organic-walled monothalamous foraminifera with a spherical

Read More »

Lieberkuehnia spec.

Lieberkuehnia spec., body length 127 µm Lieberkuehnia spec.? I found two cells, size about 125 µm when ovoid, with an organic-walled membranous test and a

Read More »