image_list image_listE

Lobosea: Testacealobosia: Arcellinida: Difflugina: Heleoperidae

Heleopera petricola
Leidy var. major Cash 1909

Heleopera Genus: Test chitinous, coloured greyish-rose or deep purple, nearly allways rough with adhering sand-grains; pseudostome narrow, elliptic, notched in lateral view, frontal view of pseudostome more or less convex or truncated, with rounded corners; (Cash, The British Freshwater Rhizopoda and Heliozoa vol. II, 1909).
Species [ var. petricola ]: Test variable in shape, 80-100 μm long; lateral margins straight or slightly convex; pseudostome linear or elliptic.
[ var. major ]: Test colorless or lightish grey, 120-125 μm long; lateral margins nearly straight; pseudostome slightly less covex, but narrowed; (Cash, The British Freshwater Rhizopoda and Heliozoa vol. II, 1909).


Heleopera petricola Leidy?, test 92 μm long, 73 μm wide, pseudostome 42 μm wide, x 640, Oyomi marsh, Hakuba village, Nagano Pref., Japan, May 8, 2006 by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Heleopera petricola Heleopera petricola

Images of collecting locality: Oyomi marsh, Hakuba village, Nagano Pref., Japan, May 8, 2006 by Y. Tsukii


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