Bornean frog expert Alexander Haas told me that this was one of the two common Kalophrynus species at Kubah, but the systematics of this genus is currently a mess in need of revision, with no well-understood way to distinguish the species.

My Travelogues and Trip Lists page includes a complete list of the herps I saw in the wild on this trip to Malaysia, as well as a travelogue of the trip.