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Lobosea: Testacealobosia: Arcellinida: Lesquereusiidae (formerly Paraquadrulidae)

 Quadrulella sp.
Cockerell, 1911

Quadrulella Genus: Test flask-shaped (Illustrated Guide, 1985).
Species:

Quadrulella sp. (Q. symmetrica var. ?), test 90 μm long, 45 μm wide, pseudostome 20 μm wide, x 640, Omine-numa (pond/marsh), Tsukiyono town, Gunma Pref., Japan, September 2003 by Y. Tsukii
scale 50 μm scale 100 μm scale 150 μm; x 400
Quadrulella Quadrulella
Quadrulella Quadrulella Quadrulella
Quadrulella Quadrulella Quadrulella

Q. symmetrica (Wallich, 1863): 90-110 μm long, 60-70 μm wide, 35-40 μm deep; test pyriform, siliceous, rectangular plates in rows; oval in cross-section; pseudopods, cylindroid (Illustrated Guide, 1985).

Quadrula symmetrica Wallich: Test pyriform, with quadrangular siliceous or calcareous paltelets (not overlapping); 80-140 μm long, 40-96 μm wide (Kudo, 1966).

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