The Barahona rock frog or Hispaniola dwarf robber frog (Eleutherodactylus alcoae) is a species of frog in the Eleutherodactylidae family that is endemic to southern Hispaniola. It is found on the Barahona Peninsula of the Dominican Republic and immediately adjacent coastal area in Haiti. Its natural habitats are dry scrub forests; by day it retreats into caves and rock crevices. This frog is common in suitable habitat, but it is only known from three locations threatened by habitat loss. It occurs with the Jaragua National Park and Sierra de Bahoruco National Park, but significant habitat destruction occurs within these parks..