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Lobosea: Testacealobosia: Arcellinida: Difflugiidae

Difflugia acuminata
Ehrenberg, 1838

Difflugia acuminata Genus: Pseudostome lacks lobed collar; test round or oval in cross-section; with or lacking a collar (Illustrated Guide, 1985).
Species: Size, 200-400 μm long, 55-100 μm diam; test, cylindroid, narrowed toward pseudostome, tapered at base to spinelike tip; round cross-section; clear; imbedded quartz particles. Pseudostome truncate, round 40-90 μm, no neck, no collar (Illustrated Guide, 1985).


Difflugia acuminata or D. curvicaulis ?, test 155 μm long, 75 μm wide, pseudostome 33 μm wide, x 400, x 640, Numa-no-hara marsh (Genseikaen), Madarao highland (Niigata & Nagano Pref.), Myoko village, Niigata Pref., Japan, May 15, 2005 by Y. Tsukii
scale 50 μm scale 100 μm scale 150 μm; x 400 : scale 31 μm scale 63 μm scale 94 μm; x 640
Difflugia Difflugia Difflugia

Difflugia acuminata or D. curvicaulis ?, test 110 μm long (excluding very short & strongly curved spine ?), 62 μm wide, L/W=1.8, pseudostome 30 μm wide, x 640, a small wetland near Numa-no-hara marsh (Genseikaen), Madarao highland (Niigata & Nagano Pref.), Myoko village, Niigata Pref., Japan, May 15, 2005 by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
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