Sphenoderia pseudominuta
S. pseudominuta, from Chatelain et al, 2013

Sphenoderia pseudominuta Chatelain, Meisterfeld, Roussel-Delif and Lara 2013

Diagnosis: Test acrostome, colorless, rounded, with similar sized ovoid plates; collar scales well-visible under scanning electron microscopy and high power LM; nucleus vesicular.
Very similar to Sphenoderia minuta, except that the scales are slightly smaller and less elongated.

Dimensions: Test length: mean 33.6 µm, width: mean 21.1 µm, length of the collar: mean 4.2 µm, width of the collar (inner): c. 10.1 µm, width of the collar (outer): 9.8 µm. Scale dimensions: 9.3 µm length and 6.2 µm width, as measured over 16 scales from 9 individuals.

Ecology: Sphagnum, Belgium.

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 »