Planocarina () is a genus of Arcellinida testate amoebae belonging to the family Hyalospheniidae.
Morphology
Members of
Planocarina have an elongated, pyriform test with a distinct neck, and lateral margins tapering towards the test opening. The posterior part of the test is surrounded entirely by a flat keel. The test hyaline or slightly yellowish in color, composed of circular and elongated scales recycled from the organism's prey, such as
Euglyphid.
Classification
Planocarina contains all former species of
Nebela that have a flat keel, with the exception of those that have a lateral horn, which are assigned to
Cornutheca. There are 4 species in total:
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Planocarina carinata (= Nebela carinata )
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Planocarina marginata (= Nebela marginata )
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Planocarina maxima (= Nebela maxima )
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Planocarina spumosa (= Nebela spumosa )
