world of amoeboid organisms



Microcorycia scutella 1 empty test in sectional view, 2 test with cell body (dormant stage?), 3 test with cell body, the upper test part is irregularly undulated, 4 dorsal view, 5 structure of upper test part, 6 divisional stage(?), 7-9 individuals with pre-encysted cytoplasm. (Scale 50 µm) – From Badewitz, 2004


Microcorycia scutella Badewitz, 2004

Diagnosis: Microcorycia with dome- or helmet-shaped upper test part which shows a delicate alveolar structure in the light microscope. Typical test shape of the genus Microcorycia. Upper test part dome- or helmet-shaped, sometimes with slight, irregular undulation; rounded in dorsal view; composed of rotund, irregularly arranged elements each with a dark centre (alveoli). Upper test part yellowish-brownish, lower test part hyaline. The cell body does not fill up the test. Cytoplasm is greyish and granulate. It contains one or two contractile vacuoles and food vacuoles with food particles (detritus?) and excreta. The cell is mononuclear. Pseudopodia and epipodia have not been observed.

Dimensions:  mean = 50.8 (36-62) µm, n = 19.

Ecology: Xerophile mosses. Moss cushions from seven localities. Three epilithic mosses, four mosses from reed and tiled roofs. Germany.

Remarks: This species can be clearly distinguished from all Microcorycia species described so far. A delicate alveolar structure is also found with M. husvikensis (Beyens & Chardez 1997). However, M. scutella can be clearly distinguished from that species as it is bigger than M. husvikensis and its upper test part shows no divided margin.

all from Badewitz (2004)
Recent posts

Penardochlamys arcelloides

P. arcelloides – after Penard, 1904 Penardochlamys arcelloides  (Penard, 1904) Deflandre, 1953 Diagnosis: Colorless or very slightly yellowish envelope, bag or cauldron-shaped, very thin, chitinous,

Read More »

Haplomyxa spec

Fig. 1: Main cell body of specimen A, partly hidden by debris Haplomyxa sp. Three specimens were observed in a Petri dish, along with two

Read More »

Diplophrys spec. 7

Diplophrys spec., with three tufts of filopodia Diplophrys spec. These cells are granular, never seen before. I found them in a sample from the Bert

Read More »

Psammonobiotus spec.

I found this specimen in a sample from the Oppad, near Hilversum, 2020. It is similar to Psammonobiotus linearis, but lacks a clear spine at

Read More »

Sphenoderia compressa

Sphenoderia compressa, after Badewitz, 2002 Sphenoderia compressa Badewitz, 2002 Diagnosis: Test ovoid, oval in cross section, hyaline, covered with relatively small, oval, rather irregularly arranged

Read More »

Tracheleuglypha elongata

T. elongata, A-C after Thomas and Gauthier-Lièvre, 1959; D after Van Oye, 1959 Tracheleuglypha elongata Van Oye, 1959 Diagnosis: Test similar to T. dentata, but

Read More »