[1][2] The specific name rookmaakeri honours Hendrik Roelof Rookmaaker, a Dutch colonial administrator who was resident on Flores.

[1][2][3] The type locality is "Rana Mese" in western Flores,[2] although the IUCN Red List of Threatened Species maps it further east on the island.

[1] One paratype, held at the Bogor Zoology Museum, measures about 26 mm (1.0 in) in snout–vent length.

[5] Oreophryne rookmaakeri occurs in tropical dry forest and shrubland[1] at elevations of 900–1,200 m (3,000–3,900 ft) above sea level.

[1] There is little specific information on threats to this species, but it would probably be suffer from extensive habitat loss.