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Lobosea: Testacealobosia: Arcellinida: Difflugiidae

 Difflugia oblonga
Ehrenberg

Difflugia Genus: Pseudostome lacks lobed collar; test round or oval in cross-section; with or lacking a collar (Illustrated Guide, 1985).
Species: Test pyriform, flask-shaped, or ovoid; neck variable in length; aperture terminal, typically circular; test composed of angular sand-grains, diatoms; 60-580 μm by 40-240 μm (Kudo, 1966).

Difflugia oblonga Ehrenberg, test 160 μm long, 80 μm wide, L/W=2.0, pseudostome 30 μm wide, P/W=0.38, x 640, Kisuge konuma (a small pond near Mikura mountain 1888 h), Shimogo town, Fukushima Pref. (boundary at Nasu-shiobara city, Tochigi Pref.), Japan, August 29, 2005, collected by Eizaburo Tsukii, photo by Y. Tsukii
scale 50 μm scale 100 μm scale 150 μm; x 400 : scale 31 μm scale 63 μm scale 94 μm; x 640
Difflugia oblonga Difflugia oblonga

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