Microworld

world of amoeboid organisms

Menu
Hyalosphenia
Hyalosphenia spec.

Hyalosphenia spec.

Diagnose: shell transparent, colorless, yellow or brown, elongated oval with a truncate, more or less straight or slightly curved pseudostome; aperture nearly as broad as the shell; fundus broadly rounded or a little constricted; surface finely granulated; plasma usually partly filling the shell, with some epipodia; nucleus globular with a small nucleolus.

Dimensions: about 100-120 µm

Ecology: this species has been found in the ooze of a river near Oberndorf/Bremen in Germany. Food: mainly diatoms.

Remarks: this remarkable species was discovered by Steffen Clauss, Germany, who published some photomicrographs in a German Forum on the internet. According to his description he found about 50 specimens pro ml. ooze.

This species resembles H. penardi, but the latter is much larger (180 µm), has a nearly semi-circular aperture (“stark gewölbt”) and has no scale structure.

Hyalosphenia
Hyalosphenia
Hyalosphenia spec., fine structure of the shell
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 »

Lachmannia spec.

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

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 »