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Nassophorea: Nassulida: Nassulina: Nassulidae

 Nassula aurea
Ehrenberg, 1833
->> Obertrumia aurea (Ehrenberg, 1833) Foissner, 1987

Nassula 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).
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
scale 200 μm scale 400 μm scale 600 μm; x 100 : scale 100 μm scale 200 μm scale 300 μm; x 200
Nassula Nassula
scale 50 μm scale 100 μm scale 150 μm; x 400
Nassula Nassula
scale 50 μm scale 100 μm scale 150 μm; x 400 : scale 31 μm scale 63 μm scale 94 μm; x 640
Nassula Nassula Nassula

scale 50 μm scale 100 μm scale 150 μm; x 400
Nassula Nassula
scale 31 μm scale 63 μm scale 94 μm; x 640
Nassula Nassula Nassula Nassula Nassula

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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