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

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

Pontigulasia pentangulostoma

February 13, 2021

P. pentangulostoma, after Quin et al., 2008 Pontigulasia pentangulostoma Quin, Y., Xei, S., Gu, Y. and Zhou, X., 2008 Diagnosis: Shell is brown, laterally uncompressed,

Flabellula citata

February 11, 2021

Flabellula citata, from Dykova et al., 2008 Flabellula citata Schaeffer, 1926 Diagnosis: Length in locomotion 15-75 µm; width 25-55 µm. Shape very variable, from a

Puytoracia bonnetti

February 10, 2021

Puytoracia bergeri, from Nicholls, 2006 Puytoracia bergeri Nicholls, 2006 Diagnosis: Shell an oblong flattened cylinder, with rounded anterior and posterior ends. An invaginated pseudostome

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