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Nassophorea: Nassulida: Nassulina: Nassulidae

 Nassula sp.

Nassula Family: Body ellipsoidal, uniformly ciliated; hypostomial frange short; prominent cytopharyngeal apparatus (Carey, 1992).
Genus: Oral aperture small, oval (Carey, 1992).
Species:
Similar species --> Paranassula

Nassula sp. , cell body 154 μm long, 100 μm wide, cyrtos 26 μm in diam., long cytopharyngeal basket, trichocyst rare, about 9 μm long, x 200, x 400, x 640, Akigase park, Saitama city, Saitama Pref., Japan, October 1998, by Y. Tsukii
scale 50 μm scale 100 μm scale 150 μm; x 400 : scale 31 μm scale 63 μm scale 94 μm; x 640
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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).

Nassula parva Kahl, 1928: Small, ovoid with large cytopharyngeal basket; 60 μm long; a spherical macronucleus; single contractile vacuole in mid-body region; details of range and suture not given (Carey, 1992).

Nassula rubens Perty, 1852: Small, ellipsoidal; 50-70 μm long; long cytopharyngeal basket; single contractile vacuole; single macronucleus; many trichocysts (Carey, 1992).

Nassula citrea Kahl, 1931: Ovoid or ellipsoidal, anterior not expanded; 70-90 μm long; frange equipped with long membranelles; cytopharyngeal appratus unremarkable; single contractile vacuole; single ovoid macronucelus (Carey, 1992).

Nassula labiata Kahl, 1933: Cell body ovoid, nearly spherical, 200 μm long; cytostome equipped with two small lips; others similar to N. aurea (Carey, 1992).

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