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Lobosea: Testacealobosia: Arcellinida: Difflugina: Heleoperidae

Heleopera sylvatica
Penard

Heleopera Genus: Test chitinous, coloured greyish-rose or deep purple, nearly allways rough with adhering sand-grains; pseudostome narrow, elliptic, notched in lateral view, frontal view of pseudostome more or less convex or truncated, with rounded corners; (Cash, The British Freshwater Rhizopoda and Heliozoa vol. II, 1909).
Species: Test transparent, oval in broad view, 50-75 μm long, 25-30 μm wide; pseudostome distinctly convex (Cash, The British Freshwater Rhizopoda and Heliozoa vol. II, 1909).


Heleopera sylvatica Penard ?, test 110 μm long, about 65 μm wide, L/W=1.7, pseudostome μm wide, x 640, No.1, Oh-numa marsh, Akita-Hachimantai, Kazuno city, Akita Pref., Japan, September 21, 2007 by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Heleopera Heleopera Heleopera Heleopera Heleopera

Images of collecting locality: No.1, Oh-numa marsh, Akita-Hachimantai, Kazuno city, Akita Pref., Japan, September 21, 2007 by Y. Tsukii


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