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Litostomatea: Haptoria: Pleurostomatida: Amphileptidae

 Amphileptus sp.
Ehrenberg, 1830
Syn.: Hemiophrys Wrzesniowski, 1870

Amphileptus Genus: Flask-shaped; ciliation uniform and complete; slit-like cytostome not reaching the middle of body, without trichocyst-borders; two or more macronuclei (Kudo, 1966). Many contractile vacuoles along both dorsal and ventral edges (Carey, 1992).
Species:

Amphileptus sp., cell body 235 μm long, 77 μm wide, L/W=3.1, x 400, x 640, drainage ditch at Shimofukada (near Shirakobato water park), Iwatsuki-ku (formerly Iwatsuki city), Saitama city, Saitama Pref., Japan, February 5, 2006 by Y. Tsukii
scale 50 μm scale 100 μm scale 150 μm; x 400 : scale 31 μm scale 63 μm scale 94 μm; x 640
Amphileptus Amphileptus Amphileptus

Amphileptus lanceolatus Dragesco, 1965: lanceolate in form; 120 μm long; pointed both anteriorly and posteriorly; no elongate neck region; trichocysts in the buccal region and also scattered throughout cytoplasm; mucocysts present; a macronucleus consisting of two spherical bodies with a intercalated micronuleus; a single contractile vacuole with satellite vacuoles (Carey, 1992).

Amphileptus inquieta (Biernacka, 1963): 170-200 μm long; with an elongate neck & rounded posterior; a row of four contractile vacuoles present laterally; two large spherical macronuclei (Carey, 1992).

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