Species: 85-170 μm long, 10-20 μm wide; highly plastic; stigma distinct; chloroplasts discoid with pyrenoid; several small rod-shaped paramylon (paramylum) bodies (Kudo, 1966). Body flattened, twisted, with longitudinal chloroplasts; flagellum less than 1/4 body length (How to know the protozoa, 1979).
Cell body cylindrical, 90-165 μm long, 9-18μm wide, posterior slightly pointed; chloroplast large disc-shaped, parietal, 30-50 in number, a pyrenoid without paramylon sheath located at the center; a flagellum 1/3 to 1/2 of the body length; nucleus ellipsoidal 14-20 x 8-12 μm; stigma 5-7 μm; paramylon bodies ellipsoidal or rod-shaped (An Illustrated Guide to Freshwater Zooplankton in Japan, 2000).
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Small variety: less than 100 μm long
E. deses
98 x μm
L/W=
chl. 7-8.5 μm
para. ~6 μm
Bessho-numa
Saitama, 2001
E. deses ?
90 x 8 μm
L/W=11.3
chl. μm
para. μm
Ueno
Tokyo, 2001
E. deses
about 90 x μm
L/W=
chl. 8-11 μm
para. μm
Saitama, 1999
E. deses ?
75 x 8 μm
L/W=9.4
chl. μm
para. μm
Ina
Saitama, 2003
E. deses ?
65 x 7 μm
L/W=9.3
chl. μm
para. μm
Kurihashi
Saitama, 2001
E. deses
78-93 x 8-13 μm
chl. μm
Shiba river
near Owada Park
Saitama, 2005
E. deses
80 x 9 μm
chl. μm
Jizoh-bori
Sannoh Park
Saitama, 2005
E. deses
82 x 7 μm
chl. μm
Ayase river
Iwatsuki-ku
Saitama, 2006
Similar species ->> E. ehrenbergii