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.

Recent posts

Raphidocystis glabra

after Zlatogursky et al., 2018 Raphidocystis glabra Dürrschmidt, 1985 Diagnosis: Periplast 40-50 μm in diameter; spine-scales 4.6–15 μm; plate-scales 6-7 × 3-3.5 μm; tiny teeth

Read More »

Raphidocystidae

Raphidocystidae Zlatogursky, 2018 Diagnosis: centrohelids with monolayered plate-scales covering cell surface. Plate-scales with a hollow inflected margin. Sometimes trumpet-shaped or tubular spine-scales present, forming an

Read More »

Planhoogenraadia liboica

P. liboica – from Bonnet, 1979 Planhoogenraadia liboica Bonnet, 1979 Diagnosis: . Test relatively flat, with a dorsal convexity. Shell widest in the center. Aperture deep

Read More »

Deharvengia papuensis

Deharvengia papuensis, after Bonnet, 1979 Deharvengia papuensis  Bonnet, 1979 Diagnosis: Theca large, ovoid, very regular, colorless. Elliptical pseudostome bordered by a thick yellowish lip or

Read More »