Known only from the Rio Xingu watershed, Pará state, Brazil, but conflicting reports exist as to where it originates from. While some state it’s  collected from close to the river’s confluence with the Amazon, near the town of Porto de Moz, others refer to localities ‘south of Altamira’ or at São Félix do Xingu, which places the collection points much further upstream, and overlapping the range of the very similar-looking congener B. xanthellus

6cm