AN EUROPEAN POPULATION OF BRYOMETOPUS-HAWAIIEWSIS FOISSNER, 1994 (PROTOZOA, CILIOPHORA)

Bryometopus hawaiiensis Foissner, 1994 was found in moss samples from emergent stones collected in the Guadarrama river (Central Spain). Stu dy of cell morphology and infraciliature is based on observations of l iving and silver carbonate impregnated specimens. This population show some variations when compared with type species from Hawaii consistin g on differences in number of kinetids per kinety and the presence of more than one micronucleus. The differences observed in size of cells and macronucleus are caused by the different methods used. New data on habitat and cyst formation are provided.