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Difflugia tuberculosa
Difflugia tuberculosa, from Hempel, 1896

Difflugia tuberculosa  Hempel, 1896

Diagnosis: Test compressed, irregularly ovoid in shape, slightly constricted around the pseudostome and prolonged into a short neck. Fundus rounded and ending in one or more blunt processes, like d, nodosa. On each of the compressed sides there are three small prominences or tubercles. Test about four times longer than wide. This species is characterized by having three small tubercles on each of the compressed sides. These tubercles are arranged on each side of the test so as to form the angles of a triangle.

Dimensions: Length without spines 143 µm, width 111 µm.

Ecology: Freshwater. Lake Matanzas, Illinois, USA.

Ferry Siemensma, created June 21, 2019; last modified January 31, 2021
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