Borges and Silva • A NEW AREA OF ENDEMISM FOR AMAZONIAN BIRDS 
17 
«8WW 
TW*V 
Tabocal 
Barcelos 
Muirapinina 
Japura 
^ Manaus 
Igarape 
>— Cacau / 
Pereira 
Manacapuru ( 
CodajSs 
HMl3 
Castanheiro 
Santa Maria 
Acajatuba 
FIG. 2. Northwestern Amazonia, showing the study region and municipalities cited in the text. The light gray area 
indicates the suggested limits of the Jati Areu of Endemism. 
Grey-winged Trumpeter (Psophia crepitans 
ochroptera Pelzeln 1857). Pcl/.eln described this 
trumpeter as a distinct species. Psophia ochrop¬ 
tera. Ochroptera is treated as a subspecies of P. 
leucoptera in recent taxonomic literature (Pinto 
1978. Sherman 1996). We agree with Haffer 
(1974) who proposed that ochroptera is a 
subspecies of P. crepitans , the trumpeter species 
distributed north of the Amazon River. P. 
crepitans has two other subspecies in addition to 
ochroptera: crepitans inhabiting the Guianan 
AOE and napensis. inhabiting the Napo and Imeri 
AOEs. P. c. ochroptera has been recorded mostly 
in white-sand woodland and terra finite forest in 
JNP (Borges et al. 2001, Borges and Almeida 
7011). where an adult female was collected (INPA 
# 576). A recent molecular systematic study 
i Ribas et al. 2011 ). in addition to morphological 
assessment (Haffer 1974). found that ochroptera 
is diagnosable from the other subspecies in the 
Psophia crepitans complex. 
Chestnut-headed Nunlet (Nonnula anmuroce- 
phula Chapman 1921). This rare puffbird was 
known only from specimens collected in Mana¬ 
capuru used in the original description until it 
was rediscovered in JNP (Whittaker et al. 1995). 
It is associated with seasonally flooded black- 
water forest or Igapo forest (Whittaker et al. 
1995, Borges et al. 2001). The MZUSP has skins 
collected in Manacapuru (MZUSP 16561) and 
Codajas (MZUSP 16387), and one specimen was 
collected in JNP (MPEG 55855) in addition to 
specimens mentioned in Whittaker et al. (1995). 
The northernmost record of N. amaurocephala is 
the Unini River (Whittaker et al. 1995) and the 
easternmost is the Amana River (M. Cohn-Haft, 
pers. comm.) with no confirmed records from the 
upper portion of the Rio Negro (Haffer and 
Fitzpatrick 1985). It is suggested that N. 
amaurocephala forms a superspecies with N. 
ruficapilla and N. frontalis (Rassmussen and 
Collar 2002) 
Ivory-billed Aracari {Pterogtossus azara azara 
Vieilot 1819). This subspecies of the Ivory-billed 
Aracari has the upper mandible brownish colored 
and is recorded from Castanheiro. Codajas. 
Igarape Cacau Pereira (Haffer 1974). Manacapuru 
(MZUSP 16833 and 16834), Maraa (MPEG 
