Genus: Pseudostome lacks lobed collar; test round or oval in cross-section; pseudostome relatively large, with or lacking a collar (Illustrated Guide, 1985).
Species:
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Similar species >> D. bacillariarum; D. pyriformis; D. oblonga;
D. bacillifera
or D. oblonga ?
152 x 70 μm
L/W=2.2
Tanohara Natural p.
Ontake highland
Nagano, 2005
D. bacillifera
or D. oblonga ?
160, 175 x μm
L/W=2.0-2.2
Kodanuki marsh
Fujinomiya
Shizuoka, 2006
D. bacillifera
or D. oblonga ?
170 x 90 μm
L/W=1.9
Sukawa highland
Kurikoma mountain
Akita, 2005
D. bacillifera
or D. oblonga ?
110 x 45 μm
L/W=2.4
P/W=0.44
Nidanuma
Tsuchiyu-onsen
Fukushima, 2005
D. bacillifera
142,150 x μm
L/W=2.0
Shijuhachi-ike
Shiga highland
Nagano, 2006
D. bacillifera
x μm
L/W=
Yokotashiro 4
Oze-ga-hara
Gunma, 2008