[3] It is named for Robert F. Inger, American zoologist from the Field Museum of Natural History.

[5] Adult males of P. ingeri measure about 36 mm (1.4 in) and adult females 47–50 mm (1.9–2.0 in) in snout–vent length (SVL);[2] it is a relatively large member of the genus Philautus.

The finger and toe tips have broad, oval discs.

[4] P. ingeri inhabits montane forests at elevations of 1,300–1,600 m (4,300–5,200 ft) above sea level.

[1] Reproduction in P. ingeri is presumed to be direct (that is, eggs hatching to froglets, without free-living tadpole stage).