image_list image_listE

Euglenida: Euglenales

Trachelomonas sp.

Trachelomonas Genus: Euglenas in a close fitting lorica; a single long flagellum extends through small opening; lorica with or without short collar; yellow to brown (How to know the protozoa, 1979). Lorica often possesses numerous spines, composed of ferric hydroxide impregnated with brown manganic compound (Kudo, 1966).
Species: Lorica 20-26 μm long, 9-12 μm wide (An Illustrated Guide to Freshwater Zooplankton in Japan, 2000).
Similar species -->> T. cylindrica (elongated cylindrical, smooth); T. abrupta (cylindrical/ellipsoidal, dotted); T. lacustris (elongated cylindrical, dotted);


Trachelomonas sp., lorica 24 μm long, 10 μm wide, x 400, x 640, Uruguay, November 1999, photo by Yuuji Tsukii
scale 50 μm scale 100 μm scale 150 μm; x 400 : scale 31 μm scale 63 μm scale 94 μm; x 640
Trachelomonas Trachelomonas Trachelomonas


Please click on images for viewing enlarged.
Copyright Protist Information Server