Litostomatea:
Haptoria: Pharyngophorida: Tracheliidae
Trachelius ovum
Ehrenberg, 1833
Genus: Body oval to round, rear rounded; 1 proboscis (Illustrated Guide, 1985).
Round cytostome at base of neck; contractile vacuoles many (Kudo, 1966).
Species:
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Trachelius ovum ?,
cell body 260 μm long, 150 μm wide,
x 100, x 200, x 400, x 640, Numa-no-hara marsh (Genseikaen), Madarao highland (Niigata & Nagano Pref.), Myoko village, Niigata Pref., Japan, May 15, 2005 by Y. Tsukii
100 μm
200 μm
300 μm; x 200
x 400, x 640
T. ovum Ehrenberg, 1833:
200-400 μm long; ellipsoid body;
cytoplasm much vesiculated, granular, in bands; many water expelling (contractile) vacuoles
(How to know the protozoa, 1979).
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