Litostomatea:
Haptoria: Pleurostomatida: Amphileptidae
Amphileptus sp.
Ehrenberg, 1830
Syn.: Hemiophrys Wrzesniowski, 1870
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:
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Amphileptus sp.,
similar to inquieta but pointed both anteriorly and posteriorly,
cell body 430 μm long, 64 μm wide,
two elongated ellipsoidal macronuclei, 55 μm long, 15 μm wide,
x 200 & x 400, Japan, 1997 by Y. Tsukii
100 μm
200 μm
300 μm; x 200
50 μm
100 μm
150 μm; x 400
A. 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).
A. 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).
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