Nassophorea:
Nassulida: Nassulina: Nassulidae
Nassula aurea
Ehrenberg, 1833
->> Obertrumia aurea (Ehrenberg, 1833) Foissner, 1987
Family: Body ellipsoidal, uniformly ciliated; hypostomial frange short; prominent cytopharyngeal apparatus
(Carey, 1992).
Genus: Oral aperture small, oval (Carey, 1992).
Species: Cell body ovoid or ellipsoidal, 250 μm long;
frange reduced; cytopharyngeal basket long; a single contractile vacuole
(Carey, 1992).
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Similar species --> Paranassula
Nassula aurea Ehrenberg, 1833,
cell body 237 μm long, 125 μm wide,
cyrtos 25 μm in diam.,
frange passes from left to right but not travel further than the cytostome,
trichocyst absent, a contractile vacuole with many peripheral small vacuoles,
x 100, x 200, x 400, x 640, Saitama Pref. Japan, May 2000, by Y. Tsukii
200 μm
400 μm
600 μm; x 100 :
100 μm
200 μm
300 μm; x 200
50 μm
100 μm
150 μm; x 400
50 μm
100 μm
150 μm; x 400 :
31 μm
63 μm
94 μm; x 640
50 μm
100 μm
150 μm; x 400
31 μm
63 μm
94 μm; x 640
Nassula ornata Ehrenberg, 1833: 250 μm long,
180 μm wide (Kahl, 1931).
Ovoid, 250 μm long; frange presents; a single contractile
vacuole lie in the mid-body region; macronucleus with at least three micronuclei; many trichocysts present
(Carey, 1992).
* Nassula aurea Ehrenberg, 1833: 250 μm long;
L/W=2 (Kahl, 1931).
Ovoid or elliptical, 250 μm long; reduced frange presents;
long cytopharyngeal apparatus "cyrtos" presents; macronucleus with 2 to 4 micronuclei; a single contractile
vacuole; trichocysts absent (Carey, 1992).
Nassula terminalis Ozaki & Yagiu, 1941:
Ovoid, flattened and flexible; 150-210 μm long;
anterior quarter narrower than the rest of the body; cytopharyngeal opening very long;
macronucleus ovoid; single micronucleus; single contractile vacuole terminal;
trichocysts absent (Carey, 1992).
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