[2] The specific name darlingtoni honors P. Jackson Darlington Jr., an American evolutionary biologist and zoogeographer.

[2][3] Choerophryne darlingtoni grows to a maximum snout–vent length of 27 mm (1.1 in).

The dorsal ground color varies from deep plumbeous to pale yellowish tan.

A pale, golden interocular line is almost always present but is sometimes indistinct.

[4] Its natural habitats are montane forests[1] at elevations above 2,000 m (6,600 ft).