Live specimen of Proales amplus sp. nov. observed under the optical microscope. A lateral view; B dorsal view; C ventral view; D eyespots and mastax; E gastric glands, dorsal view; F bladder and foot glands. Scale bars: A–C = 100 μm, D, F = 20 μm, E = 50 μm. Abbreviations: bl = bladder, br = brain, ey = eyespots, fg = footglands, fo = foot, gg = gastric glands, in = intestine, mx = mastax, nu = nuclei, t = toe, vi = vitellarium.