Potamotrygonocotyle dromedarius
Potamotrygonocotyle dromedarius is a species of monogenean parasites of Brazilian stingrays in which it infects the gills.
Specifically, it infect four different species of stingray: Ocellate river stingray, Bigtooth river stingray, Xingu River ray, and an unidentified species of Potamotrygon.