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Litostomatea: Haptoria: Pharyngophorida: Tracheliidae

Trachelius subtilis
Penard, 1922

Trachelius subtilis Genus: Body oval to round, rear rounded; 1 proboscis (Illustrated Guide, 1985). Round cytostome at base of neck; contractile vacuoles many (Kudo, 1966).
Species: Cell body up to 280 μm long (Kahl, 1930).


Trachelius subtilis, cell body 180 μm long, 85 μm wide, two ? ovoidal macronuclei, x 400, x 640, Near Yo-Ro bridge, Kami-Fukuoka city, Saitama Pref., Japan, June 1999 by Y. Tsukii
scale 50 μm scale 100 μm scale 150 μm; x 400
Trachelius Trachelius
scale 31 μm scale 63 μm scale 94 μm; x 640
Trachelius Trachelius


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