Family: Cyrtos in rear 1/2 of body, hidden by ventral pellicular fold.
Genus: Cytostome in rear 1/3 of body (Illustrated Guide, 1985). Irregular, almost triangular in shape; anterior pointed; posterior rounded; distinctly flattened with a delicate keeled armour; somatic ciliation reduced; ventrally 3 longitudinal cilary rows; cytostome in a depression at posterior ventral region; tooth-like projection on the left side (Carey, 1992).
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M. simulans
34 x 19 μm
Japan, 1997
M. simulans
24 x 13 μm
Japan, 1999
M. simulans
20 x 12 μm
Wan-park-land
Kochi, 2002
M. simulans
31 x 16 μm
Kuroiso
Tochigi, 2002
M. costatus
27 x 17 μm
Uruguay, 1999
Microthorax sp.1
22 x 13 μm
Japan, 1998
Movies
Microthorax sp.
or Kreyella ?
35 x 24 μm
Saitama, 1999
Microthorax sp.
or Drepanomonas ?
30 x 16 μm
Uruguay, 1999
Microthorax ?
or Cinetochilum ?
25 μm
Japan, 1999
Microthorax sp.
17 x 9 μm
Ikenokochi marsh
Tsuruga
Fukui, 2004Similar Genus ->> Drepanomonas; Kreyella: Leptopharynx