Ditrema – Microworld

Ditrema spec.with numerous extrusomes very close to each other

Ditrema De Saedeleer, 1934

Diagnosis: Shell hyaline, small, with one side fastened to the substrate; outline circular, irregular. Shell with two opposite apertures, each with a short neck. Pseudopodia granular, fine, extending along the substrate. Nucleus globular with a central nucleolus.

One described species: Ditrema mukrous De Saedeleer, 1934.

Ditrema longicollis

Ditrema longicollis, the same as above

Ditrema mukrous

Ditrema spec.

Compared with the specimen in the first photomicrograph there is much more distance between the granules

Ditrema mukrous

Ferry Siemensma
Created March 2, 2019
Last updated January 31, 2021

Euglypha bryophila

March 18, 2021

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

Vernalophrys

March 10, 2021

(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

Actinosphaeridium spec.

February 24, 2021

Actinosphaeridium spec. Diagnosis: Cell surrounded by a membranous shell, with an outer mucous layer. Filopodia with granules, sometimes branching. Cell stalked. Ecology: I found this

Euglyphidion

February 24, 2021

Euglyphidion enigmaticum – after Bonnet, 1960 Genus Euglyphidion Bonnet, 196 Diagnosis: Shell hyaline, ovoid, pseudostome circular or slightly elliptical. Shell loosely covered with two types of

Leptomyxa spec.

February 16, 2021

Leptomyxa sp., slowly retracting in response to the light of the microscope Leptomyxa sp. Diagnose: This is a very large amoeba which I found in

Zivkovicia spec.

February 15, 2021

Zivkovicia spec., 200 µm long; the right image is viewed through the aperture Zivkovicia spec. Diagnosis: Shell pyriform, circular in oral view, with a clear

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