Suborder: Paroral dikinetid shorter than other oral structures; no ribbed wall from paroral dikinetids towards cytostome (Illustrated Guide, 1985).
Family: Ovoid to ellipsoid, usually flattened; dense ventral cilia; oral area relatively large; ~ midventral; long, prominent cytoprOctober
Genus: Preoral suture prominent; anterior suture extends to right immediately forward of oral area (Illustrated Guide, 1985). Ovo-cylindroid body, dark colored; no anterior cilia; transverse ring of long cilia near anterior end; cytostome small, near anterior ring of cilia; a long caudal cilium; common in decaying vegetation (How to know the protozoa, 1979). Ovoid to cylindrical; crescentic cytostome on slightly flattened area near anterior end; a zone of cilia around body; one (or more) long caudal cilium; cytoplasm yellowish to dark brown; macronucleus ovoid; a single contractile vacuole; fresh or brackish water (Kudo, 1966).

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L. intermedius ? 158 x 52 μm Kannon-numa 2 Shimogo Fukushima, 2008	L. plagius 55 x 21 μm Saitama, 1999	L. plagius 53 x 23 μm Uruguay, 1999
L. plagius 46 x 17 μm Higashi-hiroshima Hiroshima, 1998	L. plagius 47 x 20 μm Japan, 1999	L. plagius 50 x 20 μm Kantoh area, 1999	L. plagius 47 x 18 μm Riverside green l. Sawara Chiba, 2004
L. plagius μm Iruma Saitama, 2003	L. plagius 45 x 17 μm caudal cilium ? Kaga Ishikawa, 2000	L. plagius 47 x 17 μm Konuma Sakado Saitama, 2004	L. plagius μm Naruto Chiba, 2003
L. plagius μm Kannon-numa 11 Shimogo Fukushima, 2008	L. plagius 58 x 20 μm Hazama marsh Ashikaga Tochigi, 2006

Similar genus ->> Dexiotricha;

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