Indo-West Pacific: Nicobar Islands to Vanuatu, north to the Ryukyu Islands, south to northwest Australia and the Great Barrier Reef.

The true D. prosopotaenia is white-breasted and lacks the large black blotch on upper sides; the yellow-breasted variation with black blotch.

The true D. prosopotaenia ranges from Singapore to Sulawesi while the yellow-breasted variant ranges from Irian Jaya to eastern Australia and Vanuatu.