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Awerintzewia cyclostoma, 156 µm

Genus Awerintzewia Schouteden, 1906

Diagnosis: Test ovoid with a dark violet color, laterally compressed with an oval aperture and an internally thickened border.

Awerintzewia cyclostoma Schouteden, 1906

Diagnosis: Test ovoid with a dark violet color, laterally compressed with an oval aperture and an internally thickened border.

Dimensions: 135-180 µm long; my measurements 156-181 µm.

Ecology: Sphagnum and peat bogs, forest soils. Rare.

Remarks: This species resembles at first sight Heleopera amethystea, but can be distinguished by its oval aperture, while Heleopera amethystea has a slit-like aperture.

Awerintzewia cyclostoma
Awerintzewia cyclostoma, oval aperture
Awerintzewia cyclostoma
Awerintzewia cyclostoma
Awerintzewia cyclostoma, 181 µm, Ecuador
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