This species is known from extreme southern Michoacán and México (state) in Mexico, south and east along the Pacific slope to western Guatemala. It also occurs in Veracruz and eastern Oaxaca, Mexico, on the Atlantic slope. In Guatemala it is known from above 2,000m asl.
Habitat and Ecology
It occurs in a great variety of habitats, from lowland forests (tropical rainforest, tropical semi-deciduous forest) to montane pine and pine-oak forests, and cloud forests. It can survive in secondary forests, but not in open habitats. It breeds by direct development.
It is a common species.
The major threat is the clearance of forest habitat for agriculture and as a result of logging, which is probably leading to the disappearance of shade, humidity and leaf-litter microhabitats on which the species depends.
This species occurs in Reserva de la Biósfera El Triunfo in Mexico.
This species was previously included in the genus Eleutherodactylus (Crawford and Smith 2005).
Georgina Santos-Barrera, Luis Canseco-Márquez 2004. Craugastor pygmaeus. In: IUCN 2014