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The distribution of the poorly known hylid frog Hypsiboas roraima Duellman & Hoogmoed, on the Guiana Shield is redefined, including new records from Venezuela. The advertisement call of this species is analyzed and Hypsiboas angelicus Myers & Donnelly is associated as a junior synonym of H. roraima.doi:10.1590/s0031-10492011000200001 fatcat:zre6rllj7jaw7phpbyrgq3nd7i