Rhopalocarpus undulatusRhopalocarpus undulatus is a tree in the family Sphaerosepalaceae. It is endemic to Madagascar.Distribution and habitatRhopalocarpus undulatus is known only from eight locations in the northern regions of Diana and Sava. It is present and protected in the Ankarana Special Reserve. Its habitat is dry deciduous forests from to altitude.ConservationRhopalocarpus undulatus is threatened by shifting patterns of agriculture. Because the species is used as timber, subsistence harvesting is also a threat. Wildfires also threaten the species.