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
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