[1][3] Its specific name refers to Tecun Uman, the Guatemalan national hero.

The supra-tympanic fold is pronounced; the tympanum is distinct in females but indistinct in the male.

[2] The tadpoles measure up to 64 mm (2.5 in) in total length and have an ovoid, vertically flattened body.

[2] Plectrohyla tecunumani live in small caves with streams in the mountains of western Guatemala at elevations of 3,200–3,395 m (10,499–11,138 ft) above sea level.

The type locality has suffered from heavy habitat change; a visit there in 1989 resulted in no specimens, although a single tadpole was found nearby in 1995.