Txapakura

Chapacuran, also called Txapakura or Chapacura–Wañam, is a small, close-knit family of the southern Amazon, straddling Rondônia in Brazil and the Beni and Santa Cruz lowlands of Bolivia along the Guaporé and Mamoré rivers.

Its dozen or so tongues include Wariʼ, alongside Moré, Torá and Oro Win, while Chapacura itself and many neighbours are extinct. The family has no proven relatives, though contact with Irantxe, Arawa and Puinave speakers left shared vocabulary.

On the Bolivian side, Chapacuran villagers such as the Rocorona and Napeca were drawn into the Jesuit reductions of Moxos, whose evangelizing began in the 1670s and whose main mission at Trinidad was established in 1686; groups on the Rondônia side long remained beyond the colonial frontier.