Family: Pseudostome terminal; plate rectangular, siliceous or calcareous (Illustrated Guide, 1985).
Genus: Test flask-shaped (Illustrated Guide, 1985).
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Lateral side nearly straight
Q. symmetrica
85 x 42 μm
Kami-Kenashitai 3
Hakkoda mountain
Aomori, 2006
Q. symmetrica
80 x 45 μm
Iroha-numa 2
Zao mountain
Yamagata, 2006
Q. symmetrica
66 x 45 μm
Kannon-numa
Shimogo
Fukushima, 2005
Q. symmetrica
79 x 42 μm
Nidanuma
Tsuchiyu-onsen
Fukushima, 2005
Q. symmetrica
78 x 42 μm
Komado marsh
Showa - Tajima
Fukushima, 2004
Q. symmetrica
76 x 38 μm
Komado marsh
Showa - Tajima
Fukushima, 2004
Q. symmetrica
74 x 40 μm
Komado marsh 2
Showa - Tajima
Fukushima, 2007
Q. symmetrica
μm
Miyatoko m.5
Minami-Aizu
Fukushima, 2008
Q. symmetrica ?
85 x 40 μm
Hakama marsh
Madarao highland
Niigata, 2005
Q. symmetrica
78, 89 x 38 μm
Imori pond
Myoko highland
Niigata, 2004
Q. symmetrica
70 x 37 μm
Numa-no-hara m.
Madarao highland
Niigata, 2005
Q. symmetrica
72 x 43 μm
Watasuge marsh
Tsugaike highland
Nagano, 2005
Q. symmetrica
84 x 40 μm
Shimo-no-koike
Shiga highland
Nagano, 2005
Q. symmetrica
μm
Tanohara marsh 1
Shiga highland
Nagano, 2007
Q. symmetrica
83 x 42 μm
Tanohara marsh 4
Shiga highland
Nagano, 2007
Q. symmetrica
μm
Yokotashiro 1
Katashina
Gunma, 2007
Q. symmetrica
84 x 32 μm
Mumei marsh
Shiga highland
Nagano, 2006
Q. symmetrica
65 x 31 μm
Furuike marsh
Togakushi highland
Nagano, 2005
Q. symmetrica
μm
Azami-ike
Norikura highland
Nagano, 2007
Q. symmetrica
83 x 28 μm
Japan, 1998
Q. symmetrica
μm
Kareki-numa
Nikko
Tochigi, 2008
Q. symmetrica
μm
Maeyama marsh
Shiga highland
Nagano, 2008Test flask-shaped
Q. symmetrica
91 x 46 μm
Ikenokochi m.4
Tsuruga
Fukui, 2006
Q. symmetrica
100 x 42 μm
Shibayachi m.5
Odate
Akita, 2007
Quadrulella sp.
Q. symmetrica ?
90 x 45 μm
Omine-numa
Tsukiyono
Gunma, 2003
Q. symmetrica
μm
Iyari marsh 1
Omachi
Nagano, 2008
Q. symmetrica
96 x 44 μm
Kodanuki marsh
Fujinomiya
Shizuoka, 2006
Q. symmetrica
μm
Kashibaru marsh 1
Karatsu
Saga, 2006Large variety or ??
Q. symmetrica
large var. ?
150 x 90 μm
Ichinose-enchi
Norikura highland
Nagano, 2005
Q. symmetrica
large var. ?
150 x μm
Kareki-numa m.
Nikko
Tochigi, 2008
Quadrulella sp.
or Lamtoquadrula sp. ?
113 x 58 μm
Imou bog
Toyohashi
Aichi, 2004
Q. symmetrica ?
112 x 60 μm
Koigakubo marsh
Tessei-cho
Okayama, 2004