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Lobosea: Testacealobosia: Arcellinida: Centropyxidae

Centropyxis aculeata
(Ehrenberg 1838)

Centropyxis aculeata Genus: Test circular, ovoid or discoid; pseudostome eccentric, circular or ovoidal; with or without spines (Kudo, 1966).
Species: Test variable in shape and size; diameter 100-150 μm; pseudostome 50-60 μm; with 4-6 spines (?); opaque or semitransparent; with fine sand-grains or diatom shells (Kudo, 1966). 138-200 μm in diameter, 48-60 height; several spines; pseudostome 30-60 μm, recurved, invaginated (Illustrated Guide, 1985).


Centropyxis aculeata large variety, stest 155 μm long, 137 μm wide, L/W=1.1, pseudostome 60 μm wide, x 400, x 640, Kannon-numa Forest Park (pond), Shimogo town, Fukushima Pref., Japan, September 10, 2005, collected by Eizaburo Tsukii, photo by Y. Tsukii
scale 50 μm scale 100 μm scale 150 μm; x 400
Centropyxis Centropyxis Centropyxis


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