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Lobosea: Testacealobosia: Arcellinida: Centropyxidae

Centropyxis aculeata
(Ehrenberg 1838)

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).
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Centropyxis
C. aculeata
or C. discoides ?
170 x 140 μm
Univ. A.V.M.
Obihiro
Hokkaido, 2005
Centropyxis
C. aculeata
150 x 140 μm
4 spines
Japan, 199?
Centropyxis
C. aculeata
150 x 150 μm
Onnenai
Kushiro marsh
Hokkaido, 2005
Centropyxis
C. aculeata
155 x 133 μm
148 x 132 μm
4 spines
Japan, 199?
Centropyxis aculeata
C. aculeata
155 x 150 μm
4 spines
near Karakemi m.
Omachi
Nagano, 2005
Centropyxis
C. aculeata
155 x 153 μm
6 spines
Saitama, 1999
Centropyxis
C. aculeata
153 x 155 μm
140 x 140 μm
5 spines
Uruguay, 1999
Centropyxis
C. aculeata
155 x 137 μm
4 spines
Kannon-numa
Shimogo
Fukushima, 2005
Centropyxis
C. aculeata
145 x 135 μm
4 spines
Japan, 199?
Centropyxis
C. aculeata
μm
4 spines
Japan, 199?
Centropyxis aculeata
C. aculeata
153 x 153 μm
Omine-numa
Tsukiyono
Gunma, 2003
Centropyxis
C. aculeata
150 x 145 μm
2 spines
Kawatabi
Narugo
Miyagi, 2003
Centropyxis ecornis
C. aculeata
150 x 170 μm
spines
Ichinose-enchi
Norikura highland
Nagano, 2005
Centropyxis
C. aculeata
143 x 150 μm
8 spines
Saitama, 1999
Centropyxis
C. aculeata
140 x 143 μm
10 spines
Saitama, 1999
Centropyxis
C. aculeata
130 x 135 μm
9 spines
Yamagata, 1999
Centropyxis
C. aculeata
140 x 145 μm φ
12 spines
Fukushima, 1999
Centropyxis aculeata
C. aculeata
140 μm
spines
Kamonoyachi-numa
Zao onsen
Yamagata, 2005
Centropyxis
C. aculeata ?
multinucleate
140 x 120 μm
5 spines
Univ. A.V.M.
Obihiro
Hokkaido, 2005
Centropyxis
C. aculeata
125 μm
Yokotashiro
Katashina
Gunma, 2007
Centropyxis
C. aculeata ?
multinucleate
80 x 85 μm
Omine-numa
Tsukiyono
Gunma, 2003
Centripyxis aculeata
C. aculeata
100 x 90 μm
Omine-numa
Tsukiyono
Gunma, 2006
Centropyxis aculeata
C. aculeata ?
130 x 110 μm
Furuike marsh
Togakushi highland
Nagano, 2005
Centropyxis
C. aculeata ?
125,135 x μm
Nidanuma
Tsuchiyu-onsen
Fukushima, 2005
Centropyxis
C. aculeata ?
90 x μm
Mida-ga-hara 5
Gassan
Yamagata, 2006
Centropyxis aculeata
C. aculeata
122 x 110 μm
4 spines
near Yamaguchi Univ.
Yamaguchi, 2004
Centropyxis aculeata
C. aculeata
125 x 105 μm
4 spines
Yoshigadaira m.
Shirane mountain
Gunma, 2005
Centropyxis aculeata
C. aculeata
115 x 95 μm
4 spines
Numa-no-hara m.
Madarao highland
Niigata, 2005
Centropyxis
C. aculeata
110 x 107 μm
Onnenai
Kushiro marsh
Hokkaido, 2005
Centropyxis
C. aculeata
107 x 90 μm
Kisuge konuma
Shimogo
Fukushima, 2005
Centropyxis
C. aculeata
105 x 100 μm
6 spines
near Imori pond
Myoko highland
Niigata, 2004
Centropyxis
C. aculeata
small var. or ?
85-90 x μm
Japan, 199?
Centropyxis
C. aculeata
small var. or ?
65 x 60 μm
Japan, 1998
Centropyxis
C. aculeata
small var. or ?
63 x 63 μm
68 x 55 μm
Japan, 199?
Centropyxis
C. aculeata
small var. or ?
60 x 53 μm
71 x 60 μm
Uruguay, 1999
Centropyxis
C. aculeata
small var. or ?
60 x 55 μm
Iono michi-no-eki
Nasu
Tochigi, 2004
Centropyxis
C. aculeata
small var. or ?
70 x 55 μm
Ichinose-enchi
Norikura highland
Nagano, 2005
C. aculeata
μm
Kuroiso
Tochigi, 1998
Centropyxis
C. aculeata
small var. or ?
46 x 48 μm
Japan, 199?

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Centropyxis aculeata
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