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Heterotrichea: Heterotrichida: Stentoridae

 Stentor amethystinus
Leidy 1880

Stentor amethystinus Species: Body pyriform when contracted; amethyst-blue; with Chlorella; 300-600 μm long; macronucleus oval (Kudo, 1966).
Cell body broadly trumpet shaped, 250-500 μm long when fully extended; cortical granules lilac or amethystine coloured or purplish red, surround also micronuclei; with symbiotic green algae (Foissner and Wölfl, 1994).

Stentor amethystinus , cell body 430 μm long, peristome 100 μm wide, a single oval (or spherical ?) macronucleus present, x 200, x 400, Numa-no-hara marsh (Genseikaen), Madarao highland (Niigata & Nagano Pref.), Myoko village, Niigata Pref., Japan, May 15, 2005 by Y. Tsukii
scale 100 μm scale 200 μm scale 300 μm; x 200 : scale 50 μm scale 100 μm scale 150 μm; x 400
Stentor Stentor
x 400
Stentor Stentor Stentor Stentor

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