Hyla sagorum (Hartweg, 1941) Plectrohyla sagorum (common name: arcane spikethumb frog) is a species of frog in the family Hylidae.

It is found in the Sierra Madre de Chiapas from Chiapas (Mexico) to southwestern Guatemala, with a single record from northwestern El Salvador.

[1][2] Its natural habitats are cloud forests at elevations of 1,000–2,050 m (3,280–6,730 ft) above sea level.

Breeding takes place in streams.

It is very rare in Mexico and El Salvador but abundant at two Guatemalan sites.