A New Dendrobatid Frog (Colostethus) from Venezuela with Notes on its Natural History and that of Related Species

A new species of Colostethus (C. guatopoensis), described from north central Vene- zuela, is unique by having fully webbed hind feet. Natural history notes on it, C. herminae, and C. bromelicola are presented. In 1979 the Venezuelan government asked us to conduct a survey of the her- petofauna of the Parque Nacional Guato- po in the states of Guarico and Miranda, Venezuela. One of us (Rivero-Blanco) resides in Caracas, Venezuela, and the other (Dixon) surveyed the park from 17 June to 11 December 1980. Our work was concentrated along the major roads that bisect the park, but principally between the north and south boundaries of the park beginning 23 km north and ending 58 km north of Al- tagracia de Orituco. The park contains 96,640 ha of premontane rainforest that varies from 200 m to 1450 m in eleva- tion (see Ewel, Madriz and Tosi, 1976, for a description of the forest). Several major streams are found in the park and