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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 140 μm long, 120 μm wide, L/W=1.2, pseudostome 50 μm long, 58 μm wide, spiny projections 20 μm long, x 400, x 640, a small pond at Obihiro University of Agriculture and Veterinary Medicine, Obihiro city, Hokkaido, Japan, October 13, 2005 by Y. Tsukii
scale 50 μm scale 100 μm scale 150 μm; x 400
Centropyxis Centropyxis Centropyxis

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