It is found in eastern Panama and northwestern Colombia (Chocó, Antioquia, and Valle del Cauca Departments).

[3][4][5] The specific name quidditus is derived from English word quiddity, which the describer John Douglas Lynch encountered in the book "Quiddities: An Intermittently Philosophical Dictionary" by Willard Van Orman Quine; he thought the name was apt because the species was small and had been confused with Diasporus vocator and Diasporus gularis.

The tympanum is round and has its upper edge hidden by the supra-tympanic fold.

[2] Diasporus quidditus occurs humid tropical and Sub-Andean forests at elevations of 50–1,770 m (160–5,810 ft) above sea level.

Although a common species, the small size makes these frogs difficult to find.