Paradermamoeba valamo 1-3: cell surface; 4:
tangential section of the cell surface; 5: mitochondria; 6:
strange inclusion in the cytoplasm, resembling discharged
microsporidian spore; 7: nucleus; 8: dyctiosome.
Scale bar 500 nm.
Locomotive form flattened,
oblong, usually lancet-shaped. Amoeba
moves flowingly; neither discrete pseudopodia, nor
subpseudopodia are formed. Lateral parts of
the body are considerably more flattened than
the axial part. The frontal zone of hyaloplasm
has long lateral extensions toward the
posterior end of the body. As a rule these
extensions are not longer than 3/4 of the body
length, but sometimes they extend along the
whole amoeba. Lateral edge of the body
commonly is wavy, uneven and the anterior
end of the body is rounded. The dorsal
surface of the locomotive form is smooth,
without any folds or wrinkles. The wide
rounded uroidal region sometimes is of a not
clearly differentiated morular type; but the
uroidal structures are often lacking in
locomotion. The length of the locomotive form
is 51-107 mkm (the average length is 62 - 76
mkm, depending on the clone); the breadth in
the widest part of the body is 16-30 mkm (the
average breadth is 19 - 25 mkm).
Length/breadth ratio (L/B) is 2,8 - 3,5.
The cell has one spherical nucleus with a
single central endosome. The nucleus is
about 8 mkm in diameter, the endosome is
about 5 mkm in diameter (in living