Amphileptus sp.,
cell body 310 μm long, 73 μm wide,
two macronuclei ellipsoidal (slightly tapered at one end), 39 μm long, 19 μm wide,
many contractile vacuoles aligned along both dorsal and ventral sides,
x 200, x 400, x 640, Sayama Natural Park, Higashi-Murayama city, Tokyo, Japan, December 2001 by Y. Tsukii
100 μm
200 μm
300 μm; x 200
50 μm
100 μm
150 μm; x 400
31 μm
63 μm
94 μm; x 640
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).