Fig. 1. A–K. Hemiholosticha pantanalensis nov. spec. from life (A, G–K) and after protargol impregnation (B–F). Arrowhead in (A, B, E, G, H) marks the anterior body projection. A. Ventral view of a representative specimen. B, C, E, F. Ventral and dorsal view of ciliary pattern and nuclear apparatus in holotype (B, C) and in a paratype (E, F) specimen. D. Semi-schematic diagram of a dorsal kinety. G, H. Shape variants. I. Cross section, showing three prominent dorsal ribs (arrows). J. Intracellular green algae contain a subapical red eyespot, starch granules, and a big chloroplast. K. Division of an intracellular green alga yields four tightly packed daughter cells. AZM – adoral zone of membranelles; CH – chloroplast; DB – dorsal bristles; DK1–3 – dorsal kineties; DI – dorsal dikinetids; EM – endoral membrane; LMR – left marginal cirral row; MA – macronuclear nodules; MI – micronucleus; PM – paroral membrane; POR – postoral cirral row; R1–3 – ventral cirral rows; RMR – right marginal cirral row; SG – starch granules; ST – stigma. Scale bars: 20 µm (B, C, E, F) and 40 µm (A).