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