Microworld

world of amoeboid organisms

Menu

Genus Spiculophrys Zlatogursky, 2016

Diagnosis: Centrohelids lacking silica scales but with numerous thin, pointed organic (without any traces of silica) scales tapering towards acute apices. 18S rDNA without seven expansion seg-ments found in Marophrys. Monotypic.

Spiculophrys agregata Zlatogursky, 2016

Diagnosis: Cells are 4.0-10.2 µm (ca. 6.1) in diameter, surrounded with radial spicules. Cells are single or connected with axopodia into aggregations, containing 6-14 individuals.

Ecology: Tierra del Fuego, Beagle Channel, Chile, 128 m water depth, sample taken with Van Veen grab.

Remarks: Justification of a new genus and species for these organisms is dependent on the results of molecular phylogenetic analysis. Currently it is not possible to distinguish this genus and species from Marophrys spp on the basis of morphological data.

Recent posts

Euglypha bryophila

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

Read More »

Vernalophrys

(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

Read More »

Actinosphaeridium spec.

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

Read More »

Euglyphidion

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

Read More »

Leptomyxa spec.

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

Read More »

Zivkovicia spec.

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

Read More »