The specific epithet pakayakulangun has the approximate meaning of ‘belonging among the boulders’, from a local term in Kuuku Ya’u, a language of the Pakadji, or Sandbeach People, of eastern Cape York.

[1] The species grows up to about 55 mm in length (SVL).

There are dark stripes from the snout to behind the eyes; the groin and backs of the thighs are pale orange-pink.

[1] The species is only known from the type locality, just south of Stanley Hill and north of the Pascoe River, on the Cape York Peninsula of tropical Far North Queensland.

[2] There the frogs inhabit deeply piled granite boulder fields festooned with tropical rainforest vegetation.