Microworld

world of amoeboid organisms

Menu
Microchlamys patella
Microchlamys patella

Genus Microchlamys Cockerell, 1911

Diagnosis: test clear, yellow to brown, dish-shaped, flexible. Test finely areolated, chitinoid, flexible and folded at the ventral side. Cell enclosed within a membranous sac which is fixed to the shell at intervals, but lost in empty shells. This membrane closes the shell from the ventral side and forms an aperture for the lobopodia. One vesicular nucleus, small crystals present.

Remarks: Kudryavtsev and Hausmann (2007) describe Spumochlamys iliensis, an amoeba which is very similar to M. patella, but differs from this species in the lack of of an additional membrane separating the cell body from the test. This feature can only be detected using electron microscopy, which means that it is impossible to identify these species with certainty lightmicroscopically.  Only using TEM makes it possible to distinguish whether an amoeba should belong to Microchlamys or to Spumochlamys.

Microchlamys patella
Microchlamys patella
Older membrane, 46 µm in diameter
Recent posts

Amoeba proteus var.

Amoeba proteus var. Amoeba proteus var.  Diagnosis: This variety differs from the type by its oval nucleus. Dimensions: 250-400 µm (n=2); nucleus 34 x 29

Read More »

Reticulomyxa hannae

R. hannae, plasmodium – photomicrograph Steffen Clauß Reticulomyxa hannae Völcker and Clauß, 2020 Diagnosis: Trophozoites surrounded by a very thin mucous envelope, with slowly moving plasmodia, variable

Read More »

Velamentofex

Velamentofex tyrolensis (photomicrograph Steffen Clauß) Family Velamentofexidae Völcker and Clauß, 2020 Diagnosis: Multinucleate organic-walled monothalamous foraminifera. Test spherical to pyriform, usually surrounded by a broad

Read More »

Claparedellus lachmannii

Claparedellus lachmannii, common shape (Riedensee) Claparedellus lachmannii  Khanipour Roshan and Clauß, 2020 Diagnosis: Multinucleate organic-walled monothalamous foraminifera. Test spherical to elongated pyriform or irregularly shaped, with a

Read More »

Claparedellus

Claparedellus lachmannii Genus Claparedellus Khanipour Roshan and Clauß, 2020 Diagnosis: Multinucleate organic-walled monothalamous foraminifera. Test spherical to elongated pyriform or irregularly shaped, with a hyaline, flexible,

Read More »

Velamentofex tyrolensis

V. tyrolensis (photomicrograph Steffen Clauß) Velamentofex tyrolensis Völcker and Clauß, 2020 Diagnosis: Trophozoites ovoid, 98-125 μm, with reticulopodia up to 300 μm long, with a hyaline,

Read More »