A spine beside the thumb
It has a spine on the prepollex, a structure beside the first finger that gives spinosa its name.

Dwarf Glassfrog
It has a spine on the prepollex, a structure beside the first finger that gives spinosa its name.

Its large eyes have a greyish-ivory iris crossed by a fine network of black lines.
It lays eggs on the underside of leaves above streams, usually close to the leaf margin.
After laying, the female stays over the eggs for a few hours before leaving.
Records consulted from Chocó, Valle del Cauca and Nariño. Its international range extends from Honduras to Ecuador.