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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 sp. (Group Pyriformoides), test 150 μm long, 67 μm wide, L/W=2.2, pseudostome 25 μm in diam., P/W=0.37, x 400, x 640, Tanohara marsh, Shiga highland, Yamanouchi town, Nagano Pref., Japan, September 26, 2004 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 Difflugia
Test 140 μm long, 65 μm wide, L/W=2.2, pseudostome 25 μm in diam., P/W=0.38, x 400, x 640
Difflugia Difflugia Difflugia
Test 135 μm long, 55 μm wide, L/W=2.5, pseudostome 22 μm in diam., P/W=0.40, x 400, x 640
Difflugia Difflugia Difflugia

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