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Lobosea: Testacealobosia: Arcellinida: Difflugina (formerly Arcellina): Hyalospheniidae

 Cryptodifflugia oviformis
Penard, 1890

Cryptodifflugia Genus: Test ovate; discoid in cross-section; pseudostome round, oval or elliptical (Illustrated Guide, 1985).
Species: Test ovoid, without foreign bodies; 16-20 μm long, 12-15 μm wide (Kudo, 1966). 15-24 μm long, 10-18 μm wide; pseudostome oval, terminal; test smooth, clear, brownish, flask-shaped, circular in cross-section (Illustrated Guide, 1985).

Cryptodifflugia oviformis Penard 1890 , test 17 μm long, 12 μm wide, x 640, Omine-numa (pond/marsh), Tsukiyono town, Gunma Pref., Japan, September 2003 by Y. Tsukii
scale 31 μm scale 62 μm scale 94 μm; x 640
Cryptodifflugia oviformis Cryptodifflugia oviformis

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