16 
THE WILSON JOURNAL OF ORNITHOLOGY • Vo/. 124. No. 1. March 2012 
cZZtoJSXSttL SST recosnized for birds in the Amazonia lowla " ds bascd - Haffa ,1974 ' 1978 
Universidade de Sao Paulo (MZUSP), Bird Cc 
lection of Instituto Nacional de Pesquisas < 
Amazonia (INPA), Field Museum of Natur 
History (FMNH), and American Museum 
Natural History (AMNH). We also compih 
information on specimens collected in the Negr 
Japura interfluvium (e.g., Maraa, Barcelos, Man 
capuru) deposited in MPEG. All relevant inform 
tion available from the taxonomic literature w; 
also used (Pinto 1944. 1978; Sherman 199- 
Winkler and Christie 2002; Borges 2004a). W 
did not attempt a complete and detailed taxonom 
revision of the bird taxa. but checked if the specit 
°heir cTof'f T" m °tphologically distinct fro, 
,heir ranges ™ 
The new area of endemism is at proximities r 
endemic to the Napo and Imeri areas of endemism 
as originally proposed by Haffer (1978) and 
Cracraft (1985). 
RESULTS 
The taxonomic and geographical distributions ol 
383 bird species and subspecies were assessed in 
the study region. The geographic distribution of 
one species, Chestnut-headed Nunlet (Nonnula 
amaurocephala), and five subspecies, Grey¬ 
winged Trumpeter (Psophia crepitans ochropierdl 
Ivory-billed Aracan ( Pteroglossus azora azQto)- 
Lafresnayes’s Piculet (Picumnns lafresnayi pail- 
lus). Ruddy Spinetai! (SynalUixis rutilims confinis). 
and Black-faced Antbird ( Myrrnoboms mother- 
inns ardesiacus) are restricted to the west of the 
lower Rio Negro anil north of the Rio Solimocs. 
I hese taxa are considered endemic to the study 
region. 
