The western long-legged bush frog – Philautus kakipanjang Dehling and Dehling, 2013 of Sarawak / Borneo – around 1000m ASL

Etymologically, the specific epithet kakipanjang is explicitly derived from two Malay words; kaki (“leg”) and panjang (“long”)—chosen to highlight the species’ relatively long hind limbs.

Philautus kakipanjang, is a rhacophorid bush frog described from the lower montane forests of western Sarawak (Malaysian Borneo). The type series was collected on Gunung Serapi (Kubah National Park) and Gunung Gading, with additional acoustic records from Gunung Santubong; calling males were encountered after dusk on low bushes and the tops of small trees at roughly 0.5–3 m above ground, generally from about 750 m elevation upward where lower montane forest replaces lowland mixed dipterocarp forest.

In the original publication and subsequent catalogues, the species is referred to by the English common name “Western long-legged Bush Frog,” and it has been compared morphologically to members of the Philautus aurifasciatus group. Distributional summaries in authoritative databases likewise restrict confirmed localities to the summit regions of Gunung Serapi and Gunung Gading in Sarawak.