Species boundaries in the Himantura uarnak species complex (Myliobatiformes: Dasyatidae)

► Stingrays of the Himantura uarnak species complex sampled throughout the Indo-West Pacific. ► Four reproductively isolated entities detected by nuclear markers. ► Four mitochondrial clades uncovered, each specific to a species. ► Cryptic species detected within recently-described H. leoparda.