<p>Figure 1.</p>
<p>Geographic distribution of Polioptila attenboroughi and of documented records of P. paraensis in Amazonian Brazil. A red star marks the type locality of P. attenboroughi at “Tupana Lodge”. And letters adjacent to red locality dots provide documentation: S = specimen; V = vocal recording; n = undocumented sight-records. White dots mark documented records of presumed P. paraensis (type locality Benevides, Pára, near Belém), including on P. marking a site documented by a photograph archived on the website www.wikiaves.com.br (WA589871). Black lines mark the boundaries of Brazilian states as indicated by their abbreviations: AM = Amazonas; RO = Rondônia; MT = Mato Grosso; PA = Pará. The federal highways BR-319 (linking Manaus and Porto Velho, running north-south) and BR-230 (“Transamazônica” running mostly east-west) are shown in white.</p
