Lobosea:
Gymnamoebia:
Amoebida: Conopodina: Mayorellidae
Mayorella penardi
Page, 1972
Genus: Clear pseudopods, formed from clear anterior, more or less broad margin
(Illustrated Guide, 1985).
Group II: subpseudopodia, broadly based mammilliform or nearly hemisperical pyramids.
(b2: Pseudopods triangular;
locomotive less than 100 μm)
Species: 50-125 (usually < 100) μm; L/B to 4.5;
with shallow anterior hyaline edge which bears several mamilliform pseudopodia;
may divide into Y shape in changing direction; floating form usually irregularly rounded,
very rarely radiate; nucleus 6.5-10 μm (Page, 1976).
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Mayorella sp.,
locomotive form 90 μm long, 40 μm wide,
nucleus μm in diam., endosome μm in diam.,
x 640, Numa-no-hara marsh (Genseikaen), Madarao highland (Niigata & Nagano Pref.), Myoko village, Niigata Pref., Japan, May 15, 2005 by Y. Tsukii
31 μm
63 μm
94 μm; x 640
M. bigemma (Schaeffer, 1918): Locomotive, 100-450 μm long;
pseudopods, clear, conical 8-90 μm long;
uroid, temporary, morulate; ectoplasm, thin, clear; endoplasm, clear, vesicular, granular;
nucleus, spherical, 10-12 μm;
endosome, 5-6 μm;
crystals, truncated, bipyramidal, 1-2 μm long
(Illustrated Guide, 1985).
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