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Litostomatea: Haptoria: Pharyngophorida: Tracheliidae

Trachelius ovum
Ehrenberg, 1833

Trachelius Genus: Body oval to round, rear rounded; 1 proboscis (Illustrated Guide, 1985). Round cytostome at base of neck; contractile vacuoles many (Kudo, 1966).

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
scale 100 μm scale 200 μm scale 300 μm; x 200
Trachelius Trachelius Trachelius
x 400, x 640
Trachelius Trachelius Trachelius Trachelius

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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