New Species of Stream-breeding Hylid Frogs from the Northern Versant of the highlands of Oaxaca, Mexico

Abstract

Five new species of hylid frogs are described from cloud forests on the northern versant of Oaxaca, Mexico. Hyla abdivita is a member of the Hyla pinorum group and occurs in the Sierra Mazateca. Another member of Hyla pinorum group, H. melanomma bivocata Duellman and Hoyt, is elevated to specific level. Populations of frogs from the Sierra Mazateca, Sierra Juarez, and the Sierra Mizes, formerly associated with H. arborescandens in the Hyla miotynpanum Group, are recognized as a new species, H. cyclada. Hyla psarosema is a member of the Hyla bistincta Group and is found in the Sierra Mixes and seems to be closely related to H. sabrina of the Sierra Juarez Frogs from the Atlantic versant, formerly reffered to as P. erythromma and P. leonhardschultzei, are described as Ptychohyla acrochorda and P. zophodes, respectively; Hyla milleri Shannon is a junior synonym of P. leonthardschultzei. Ptychohyla erythromma and P. leonhardschultzei (sensu stricto) are restricted to the Pacific slopes of the Sierra Madre del Sur in Guerrero and Oaxaca.