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Heliozoea: Centrohelida

Acanthocystis
Carter, 1863 emend. Siemensma & Rojackers, 1988

Genus: Free-living; skeleton with or without coat; cuirass made of scales and of the basal part of the spicules; coat indistinguishable (Illustrated Guide, 1985). Siliceous scales arranged tangentially and radiating siliceous spines with pointed or bifurcated ends (Kudo, 1966).
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Spines with bifurcated ends
Acanthocystis turfacea
A. turfacea
38,44 μm
Onnenai
Kushiro marsh
Hokkaido, 2005
Acanthocystis turfacea
A. turfacea
55-76 μm φ
with Chlorella
History and folk m.
Tajima
Fukushima, 2004
Acanthocystis
A. turfacea ?
36 μm φ
with Chlorella ?
Aizu Recreation p.
Aizuwakamatsu
Fukushima, 2005
Acanthocystis turfacea
A. turfacea
μm φ
near Omine Mt.
Minakami
Gunma, 2007
Acanthocystis turfacea
A. turfacea
70 μm φ
near Omine Mt.
Minakami
Gunma, 2007
Acanthocystis turfacea
A. turfacea
μm φ
near OmiOmine-numa
Minakami
Gunma, 2008
A. turfacea
Torinome kasen
Nasu-shiobara
Tochigi , 1999
Acanthocystis turfacea
A. turfacea
62 μm φ
with Chlorella
Numa-no-hara m.
Madarao highland
Niigata, 2005
Acanthocystis turfacea
A. turfacea
78 μm φ
with Chlorella
Karakemi marsh
Omachi
Nagano, 2006
Acanthocystis turfacea
A. turfacea
57 μm φ
with Chlorella
Nozomiko 2
Iiyama
Nagano, 2007
Acanthocystis turfacea
A. turfacea
53, 64 μm φ
with Chlorella
Oyomi marsh
Hakuba
Nagano, 2006
Acanthocystis turfacea
A. turfacea
52 μm φ
Furuike marsh
Togakushi highland
Nagano, 2005
Acanthocystis
Acanthocystis sp.
53 μm φ
Dojo-ike
Norikura highland
Nagano, 2006
Acanthocystis turfacea
A. turfacea
43,53,70,72,89 μm φ
with Chlorella
Imou bog
Toyohashi
Aichi, 2004
Acanthocystis turfacea
A. turfacea ?
50 μm φ
Kashibaru m.5
Karatsu
Saga, 2006
A. turfacea
Higashi-hiroshima
Hiroshima, 1998
Acanthocystis
Acanthocystis sp.
30,35 μm φ
Numa-no-hara m.
Madarao highland
Niigata, 2005
Acanthocystis turfacea
A. turfacea
or A. nichollsi ?
62 μm φ
with Chlorella
Sakitama-kofun p.
Gyoda
Saitama, 2004
Acanthocystis turfacea
A. turfacea ?
or A. nichollsi ?
35,41,44 μm φ
with Chlorella
Higashi-sano
Hakuba
Nagano, 2004
Acanthocystis
A. turfacea
40,42 μm φ
or A. nichollsi ?
with Chlorella ?
Numa-no-hara m.
Madarao highland
Niigata, 2005
Acanthocystis sp.
Higashi-hiroshima
Hiroshima, 1998
Acanthocystis
A. turfacea
with Chlorella
Japan, 199?
Acanthocystis turfacea
A. turfacea
or A. pectinata ?
with Chlorella
Senjo-ga-hara
Nikko
Tochigi, 2003
Acanthocystis turfacea
A. turfacea ?
with Chlorella
USA, 1999
Movies
Acanthocystis turfacea
A. turfacea ?
μm
Japan, 1998
Spines with ??? ends
Acanthocystis
A. penardi ?
μm
Omine-numa
Tsukiyono
Gunma, 2003
Acanthocystis penardi
A. penardi ?
μm
Igashira park
Mooka
Tochigi, 2008
Acanthocystis
A. penardi ?
with Chlorella
Azami-ike 4
Norikura highland
Nagano, 2007
Acanthocystis
A. penardi ?
Tane-ike
Togakushi highland
Nagano, 2006
Acanthocystis turfacea
A. penardi ?
Iyari marsh
Omachi
Nagano, 2006
Acanthocystis
A. penardi ?
Iyari marsh 1
Omachi
Nagano, 2008
Acanthocystis penardi
A. penardi ?
Kannon-numa
Shimogo
Fukushima, 2008
Acanthocystis
A. penardi ?
Kannon-numa
Shimogo
Fukushima, 2008
Acanthocystis
A. penardi ?
Kashibaru m.
Karatsu
Saga, 2008
Acanthocystis
A. pectinata ?
cell μm
Hagoromo Park
Chiba, 2003
Acanthocystis
Acanthocystis
Kareki-numa m.
Nikko
Tochigi, 2008
Acanthocystis
Acanthocystis sp.
with Chlorella ?
Senjo-ga-hara
Nikko
Tochigi, 2003
Acanthocystis
Acanthocystis sp.
μm
Saitama, 1999
Acanthocystis
Acanthocystis sp.
with Chlorella
μm
Kurihashi
Saitama, 2001
Acanthocystis
Acanthocystis sp.
μm
Higashi-Matsuyama
Saitama, 2002
Acanthocystis
Acanthocystis sp.
30 μm
Shirahata-Numa
Urawa
Saitama, 2005
Acanthocystis
Acanthocystis sp.
body 40 μm
Numa-no-hara m.
Madarao highland
Niigata, 2005
Acanthocystis
Acanthocystis sp.
Miyatoko marsh
Minami-Aizu
Fukushima, 2008
Acanthocystis
Acanthocystis sp.
μm
Japan, 1998
Similar genus -->> Choanocystis;

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Acanthocystis turfacea
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