Further studies on morphology, infraciliature and morphogenesis of Pseudouroleptus caudatus Hemberger, 1985 (Ciliophora, Hypotrichida)

The oxytriehide hypotrich, Pseudouroleptus caudatus Hemberger, 1985 was found in sediment samples from the Guadarrama river (Central Spain). Its morphology, infraciliature, morphogenesis and reorganization has been studied, using observations of living cells and protargol impregnation. The morphology and morphogenesis of the European population are very similar to Those of thetype population from Peru. 2% methylcelullose induces P. caudatus to shed fragments or a capsuleshaped like itself. Its morphogenesis is very similar to that of Hemiamphisiella terricola, especially in generating a postoral cirrus. A detailed description on the morphology, infraciliature, morphogenesis,reorganization and ecology are provided