We report the occurrence in Western Panama of several previously unsuspected species of the genus Hylopedetes, including H. fuliginosus n. sp. and H. nigrithorax panamensis n. ssp. H. gemmeus Rehn 1929, previously known only from Costa Rica, is also recorded. A further spp. of Hylopedetes, H. punctatus n. sp. is described from W. Central Costa Rica. We also describe Chiriquacris quadrimaculata, n. gen, n. sp., from W. Panama, and Oedalacris cambrai n. sp. and O. lesbiae n. sp. from Eastern Panama. Oedalacris was previously known only from Colombia. We describe the previously unknown female of Piezops ensicornis (Stål 1878) and provide information on the distribution and biology of that species in Panama.