Anurans of Sete Cidades National Park, Piaui state, northeastern Brazil

The Sete Cidades National Park is located in the Brazilian municipalities of Piracuruca and Brasileira, Piaui state, in a transitional zone between the Caatinga and Cerrado biomes. Studies on its herpetofauna were limited to anuran distribution notes and a snake checklist. Thus, here we present an unpublished species list of anurans from Sete Cidades National Park, Piaui state, northeastern Brazil. We recorded one of the two highest species richness for all northeastern National Parks, and also increased the geographic distribution of one species in the state of Piaui. Most species observed are common of both Caatinga and Cerrado biomes or have wide distribution in Brazil. The anuran assemblage of Sete Cidades National Park is more similar to those registered at the Delta do Parnaiba Environmental Protection Area, Ceara, Piaui and Maranhao states, and Ubajara National Park, Ceara state. These results increase our knowledge on anuran diversity in northeastern Brazil, providing basic information for management and conservation actions of an important Brazilian National Park.