Lysapsus limellum, sometimes known as the Uruguay harlequin frog, is a species of frog in the family Hylidae found in northern Argentina, Bolivia, Brazil, Paraguay, and Uruguay.[1] Its natural habitats are moist savanna, subtropical or tropical seasonally wet or flooded lowland grassland, rivers, swamps, freshwater lakes, freshwater marshes, and pastureland. It is locally impacted by habitat loss.