Fig. 8. A–D in Morphology and Ontogenesis of Hemiholosticha pantanalensis nov. spec. (Ciliophora, Hypotrichia, Psilotrichidae)

Fig. 8. A–D. Hemiholosticha pantanalensis nov. spec., early dividers in the SEM. A, C. Ventral overviews. B, D. Details of specimens shown in (A, C). The oral primordium develops near the posterior postoral cirrus and soon invaginates into a pouch. Arrow in (D) marks some short cilia that do not sink into the pouch but remain on its right margin very likely forming the opisthe's undulating membranes. AZM – adoral zone of membranelles; CS I – cirral streak I; LMR – left marginal cirral row; OP – oral primordium; PM – paroral membrane; POC – posterior postoral cirrus; R3 – ventral cirral row 3; RMR – right marginal cirral row. Scale bars: 5 µm (B, D) and 20 µm (A, C).