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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 145 μm long, 65 μm wide, pseudostome 28 μm wide, P/W=0.43, x 640, Tanohara marsh, Shiga highland, Yamanouchi town, Nagano Pref., Japan, June 1, 2006 by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Difflugia oblonga Difflugia oblonga

Difflugia oblonga Ehrenberg, test 140 μm long, 74 μm wide, pseudostome 25 μm wide, P/W=0.33, x 400, x 640, Tanohara marsh, Shiga highland, Yamanouchi town, Nagano Pref., Japan, June 1, 2006 by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Difflugia oblonga Difflugia oblonga Difflugia oblonga
Test 110 μm long, 51 μm wide, pseudostome 20 μm wide, x 400, x 640
Difflugia oblonga

Images of collecting locality: Tanohara marsh, Shiga highland, Yamanouchi town, Nagano Pref., Japan, June 1, 2006 by Y. Tsukii

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