El Montoso Forest Reserve are small, mature forest redoubts, which are still almost intact and are seriously threatened by the expansion of the agricultural area. It should be noted that the Anaphidna sp. prob. hernandezi Cadena-Castañeda 2012 (Orthoptera: Tettigoniidae), which was only registered in Costa Rica, is registered for the first time in Panama and in this El Montoso Forest Reserve. Data onits updated geographical distribution and on its ecology are mentioned.