A new species of Hyla (Anura: Hylidae) from cloud forest in Oaxaca, Mexico, with comments on the status of the Hyla bistincta group

OCCASIONAL PAPERS of the HFn 9 i _ NATURAL HISTORY MUSEUM ^^^^ The University of Kansas Lawrence, Kansas ^^^"^^^^/rv NUMBER 174, PAGES 1-20 20 SEPTEMBER 1995 A New Species of Hyla (Anura: Hylidae) From Cloud Forest in Oaxaca, Mexico, With Comments on the Status of the Hyla bistincta Group Kevin R. Toal III' and Joseph R. Mendelson III Natural Histoiy Museum and Department of Systematics and Ecology, The University of Kansas. Lawrence. Kansas. 66045-2454. USA ABSTRACT A new species of Hyla. allocated to the H. bistincta group, is de-scribed from the cloud forest of the Sierra de Juarez and the Sierra Mixe in northern Oaxaca. Mexico. These populations previously were referred to H. siopela Duellman, but they differ in features of external morphology, osteology, and larval morphology. The taxonomic status of H. hogertae Straughan and Wright is re-viewed, and this taxon is placed in the synonymy of//, crassa (Brocchi). A revised key and a discussion of the taxonomic status of the H. bistincta group are presented. Key words: Anura: Hylidae: Hyla bistincta group: Hyla siopela: Hxia celata: Hyla bogertae: Hyla crassa: New species: Sierra de Juarez: Sierra Mixe: Oaxaca: Mexico. RESUMEN Se describe una nueva especie del genero Hyla. del grupo H. bi.stincta, de los bosques nublados de la Sierra de Juarez y la Sierra Mixe, norte de Oaxaca, Mexico. Estas poblaciones se asignaron anteriormente a H. siopela Duellman, pero son distintas en ciertas caracteristicas de la osteologia y la morfologia de adultos y renacuajos. Se examina el estado taxonomico de H. bogertae Straughan and Wright y se ubica a esta especie en la sinonimi'a de H. crassa (Brocchi). Se presenta una clave dicotomica y una discusion sobre el estado taxonomico del grupo H. bistincta. Palabras claves: Anura; Hylidae; Grupo Hyla bistincta; Hyla siopela; Hyla celata; Hyla bogertae: Hxla crassa; nueva especies; Sierra de Juarez; Sierra Mixe: Oaxaca: Mexico. 'Present Address: Department of Biological Sciences, Southeastern Louisiana Uni-versity. Hammond, Louisiana 70402. USA. © Natural llistmy Museiiiii, The Uiiiversily of Kan^as. Lawrence. ISSNiOOyi-Vy.SS