Pristimantis cosnipatae, also known as Rio Cosnipata robber frog, is a species of frog in the family Strabomantidae. It is endemic to Cusco Department, Peru. It is believed to only occur in the Cosñipata Valley (also spelled Kosñipata). The specific name cosnipatae refers to this valley. Last seen in 1999, this species is considered "critically endangered".

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