Amoebida: Tubulina: Hartmannellidae
Sacchamoeba
Frenzel, 1892; emend. Bovee, 1972
Family: Body monopodial; locomotion by slight forward bulging (Illustrated Guide, 1985).
Genus: Limax amoebae with hyaline cap reduced to shallow crescent or absent
in continuing locomotion, though always seen on initiation of pseudopodium; advance often
with non-eruptive slight antero-lateral bulging; villous-bulb uroid with more or less
rigid fine villi often present (Page, 1976).
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Sacchamoeba (limna ??), x 400, x 640, Aug. 7-13 1999, Vermont-Maine U.S.A., by Y. Tsukii
50 μm
100 μm
150 μm; x 400 :
31 μm
63 μm
94 μm; x 640
Saccamoeba limax Page, 1967: Slender, 40-75 μm long;
villous bulb common; nucleus 5.8-8.6 μm (Page, 1976).
75-100 μm long; pseudopods, lobate;
uroid, many short filaments; ectoplasm clear, thick (?), distinct (Illustrated Guide, 1985).
Saccamoeba limna Bovee, 1972: Up to 120 μm;
hyaline cap reduced in rapid locomotion; uroidal villi on
clear disc or bulb; nucleus 10-15 μm;
one contractile vacuole (Page, 1976).
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