Distribution, vocalization and taxonomic status of hypsiboas roraima and h. angelicus (Amphibia: Anura: Hylidae)

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.