image_list image_listE

Lobosea: Testacealobosia: Arcellinida: Arcellidae

 Arcella gibbosa
Ehrenberg, 1832

Arcella vulgaris Genus: Test variable, chitinoid; binucleate (Illustrated Guide, 1985).
Group [Vulgaroides]: Test hemispherical; height 1/2 ~ 4/5 diam.; lacks external shelf or rim.
Species: 70-120 μm diam., 50-75 μm high; test yellow, brwon to black with age; pseudostome round, invaginated; dorsal surface dimpled (Illustrated Guide, 1985).

Arcella gibbosa Penard, test 53 μm in diam., pseudostome 16 μm wide, P/T=0.30, x 640, Tane-ike (pond), Togakushi highland, Shinano town, Nagano Pref., Japan, May 21, 2006 by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Arcella gibbosa Arcella gibbosa Arcella gibbosa

Images of collecting locality: Tane-ike (pond), Togakushi highland, Shinano town, Nagano Pref., Japan, May 21, 2006 by Y. Tsukii

Please click on images for viewing enlarged.
Copyright Protist Information Server