Preridiniopsis Kevei SP. nov., A new freshwater dinoflagellate species (peridiniceae, dinophyta) from Hungary

This paper reports results from light and scanning electron microscopic study of a freshwater dinoflagellate considered as a new species for the science, Peridiniopsis keveisp. nov. It was found during the last ten years in different lake, rivers, canals in Hungary and some European countries. it frequently appeared as a water-bloom forming species. The theca morphology and and plate structure analysis of this dinoflagellate established its identity as a new species. P. kevei Grigorszky et Vasas is discussed in the paper in comparsion with related taxa, moreover data about its occurrence and ecology