Thirty silica-scaled chrysophytes, from 60 Ecuadorian water bodies, were observed using transmission and scanning electron microscopy. The taxa comprised 27 Synurophyceae (19 Mallomonas spp., 7 Synura spp., and one Chrysodidymus species) and three Chrysophyceae (two species of Paraphysomonas and one species of Spiniferomonas). All are new reports for Ecuador, and one taxon (Mallomonas lychenensis f. ecuadorensis) is described as new. The number of taxa per sample varied from none to ten