The expedition to the Ashaninka communities of Coriteni Tarso, Camantavishi and Shirampari in the summer of 2004 carried out a number of studies; primarily herpetological surveys but also vegetation, soil and hunting surveys. The work was carried out in little known areas where no previous systematic studies had been completed. The expedition recorded frogs and a snake not previously found in the department of Junín1. The expedition discovered at least one new species (to be registered as Cochranella parijarensis).