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Lobosea: Testacealobosia: Arcellinida: Difflugina: Lesquereusiidae

 Lesquereusia sp. ?
or other genus ?

Lesquereusia Genus: Pseudostome lacks lobed collar; test round or oval in cross-section; pseudostome at end of bent neck; test more or less coiled or folded (Illustrated Guide, 1985).
Species:

Lesquereusia sp. (or similar genus ?), test dorsoventrally flattened, 330 μm long, 310 μm wide, L/W=1.1, pseudostome 74 μm wide, x 200, x 400, x 640, Shimo-no-koike (pond), Shiga highland, Yamanouchi town, Nagano Pref., Japan, June 19, 2005 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
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Test 340 μm long, 310 μm wide, L/W=1.1, pseudostome 80 ? μm wide, x 200, x 400
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Test ruptured by pressing with coverglass, x 200, x 400, x 640
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Endosymbiotic algae (green spheres) 5-7 μm in diam., endosymbiotic fungi (?, white spheres) 6-8 μm in diam., x 640
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