Gomphonema supersaprophilum sp. nov., a new diatom species (Gomphonemataceae, Bacillariophyceae) from Flemish rivers (Belgium)

During a biomonitoring survey of the Flemish rivers, an unknown Gomphonema taxon was observed. After detailed light and scanning electron microscopy research and careful analysis with similar species in literature, the taxon is described as Gomphonema supersaprophilum sp. nov. The new species can be separated from similar species from the G. parvulum-saprophilum complex by its larger width, the shape of the head pole and the shape of the areolae. The new species was typically found in highly eutrophic waters.