The members of the genus Ecnomiohyla from Mexico and Nuclear Central America have had their taxonomic names applied inconsistently in the literature, notably with much confusion surrounding specimens from the Maya Mountains of Belize. We refer those individuals to E. minera and, based on examination of almost all known specimens of Ecnomiohyla from Mexico, Guatemala, Belize, and Honduras, provide revised diagnoses for the recognized species: E. echinata, E. minera, E. salvaje, and E. valancifer. These frogs are rarely encountered and some species have not been seen in many decades.