Penelope obscura Temminck 1815
Creators: name: Evangelista-Vargas, Oscar Diego
name: Silveira, Luís Fábio
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Aves
Galliformes
Cracidae
Penelope
Penelope obscura

description: Penelope obscura Temminck, 1815   
Holotype. The description of the species is based on the ‘ Yacuhú’, made by Azara (1805). Type locality: Paraguay.  
Common names. Portuguese: Jacuaçu. Spanish: Pava oscura. English: Dusky-legged Guan.  
 Diagnosis. Distinguished from P. bridgesi by olive brown coloration with green tinge in upperparts, and generally darker overall coloration. Underparts very variable, unlike P. bridgesi. White margins of wing coverts markedly reduced. Head, hindneck, and back coloration more uniform than in P. bridgesi.   
Re-description. No sexual dimorphism found in plumage coloration. Whitish edges extension of head feathers varies from wide to almost imperceptible. Some individuals show a moderately distinct superciliary stripe formed by short feathers with white edges. Overall color of crown feathers variable, ranging from black, gray to brown. White hue of the edge of the feathers varies individually. Brown back may show greenish, brownish or blackish tinge. Neck, breast, upper back, and shoulders conspicuously edged with white. Birds in the northern parts of the species’ range tend to have more noticeable white streaks on the back, but streaks also may be lacking. The coloration of the underparts is variable and may show a contrastingly darker chest than belly, but underparts may also be uniform dark or lighter than the breast. The belly feathers have contrasting horizontal scaling, which may range from brown to orangish, and may vary in intensity. Tail feathers are dark brown with bronze or purplish sheen. Bare skin of face slaty, legs dusky gray to blackish, and wattle red.  
Distribution. Southeastern and southern Brazil (from the east of Minas Gerais and north of Espírito Santo to Rio Grande do Sul), northeastern Argentina (Misiones, Chaco, Corrientes, Entre Ríos, Santa Fe and Buenos Aires), and the forested regions of Uruguay, with recent photographic records for Paraguay. Inhabits the biogeographic provinces of Atlantic Forest, Cerrado, Paraná Forest, Araucaria Forest and Pampa.  
 Examined material (n = 84). BRAZIL. Minas Gerais: Muriaé (1 ♀ - MNRJ 36791); Juiz de Fora Km. 118 (1 ♂ - MNRJ 45036); Juiz de Fora Km. 788 (1 ♂ - MNRJ 48346); Matias Barbosa Km. 795 (1 ♂ - MNRJ 47672); Matias Barbosa Km. 801 (1 ♀ - MNRJ 48384); Simão Pereira Km. 807 (1♀ - MNRJ 49558); Simão Pereira Km. 817 (1 ♀ - MNRJ 45542, 1 ♂ - MNRJ 48997); Simão Pereira Km. 825 (1 ♀ - MNRJ 48383); Estação do Túnel (2 ♀ - BMNH 1901.3.28.65, BMNH 1901.3.28.64); Rio de Janeiro: 2- BMNH 1889.6.1.215, RNHL no number, 1♂ - 1895.4.1.3, 1 ♀ - 1895.4.1.4; Rio de Janeiro (1 – ZSM no number); Levi Gasparian Km. 792 (1 ♂ - MNRJ 49619); Levi Gasparian (1 ♀ - MNRJ 48338); Tres Rios Km. 27 (1 ♀ - MNRJ 49080); Areal Km. 44 (1 ♂ - MNRJ 49081); Petropolis Km. 52 (1 ♂ - MNRJ 49574); Petropolis Km. 64 (1 ♂ - MNRJ 44389); Teresopolis Km. 52 (1 ♀ - MNRJ 47743); Teresopolis Km. 82 (1♀ - MNRJ 48354); Teresopolis (2 – MNRJ 9321, MNRJ 9322, 3 ♂ - MZUSP 32905, MZUSP 32906, MZUSP 32907, 2♀ - MZUSP 32904, MZUSP 32908; Guapimirim Km. 96 (1 ♂ - MNRJ 48337); Parnaso (1 ♂ - MNRJ 48336); Inga (1 ♂ - MNRJ 47552); Morro Redondo (1 ♀ - MNRJ 9405); Maromba (1♀ - MZUSP 34129, 1 ♂ - MZUSP 34130); Paraty (1 ♂ - MNRJ 36927); São Paulo: 1 – BMNH 1889.6.1.203; Bananal (1 ♂ - MZUSP 78284, 1 ♀ - MZUSP 78285); Varjão de Guaratuba (3 ♀ - MNRJ 31062, MZUSP 31576, MZUSP 43763, 1 ♂ - MZUSP 31577); Cabreúva (1 ♂ - MZUSP 93098); Morretinho e Rocha (2 ♂ - MZUSP 49382, MZUSP 49383, 1 ♀ - MZUSP 49384); Rio Ribeira (1 ♀ - MZUSP 66890, 1 ♂ - MZUSP 66891); Icapara (1 ♀ - MZUSP 73215); Paraná: Vale do Ivai (1 – MHNCI 399); Santa Barbara (1 ♀ - MHNCI 251); Fazenda Monte Alegre (1 ♂ - MZUSP 7021); Tibagi (1 ♀ - MHNCI 2041); Guaratuba-Caiobá (1 ♂ - MHNCI 1189, 2 – MHNCI 256, MHNCI 2519); Santa Catarina: Rio Negro (1 – MHNCI 5776); Joinville (1 ♂ - RNHL 1292-3, 1 – MZUSP 4863); Colonia Hansa (1 ♂ - ZSM 12415 Penelope obscura bronzina HOLOTYPE, 2 – MZUSP 1911, MFN 2759); Catanduvas (1 ♂ - MNRJ 36928); Anita Garibaldi (1 ♀ - MCNRS 2768); Jaguariaiva, Fazenda Morungava (1 – FMNH no number, 1 ♂ - 110740); Rio Grande do Sul: Potreirinhos (1 ♀ - MCNRS 682); Bom Jesus (1 ♀ - MCNRS 2544); São Francisco de Assis (1 – MCNRS 1975); Bagé (1 ♂ - MCNRS 1765). URUGUAY. 1 ♂ - BMNH 1878.1.25.1; Payssandu: 1 – BMNH 1901.2.10.24. PARAGUAY. 1 – BMNH no number. ARGENTINA. Misiones: Chantecler (2 ♂ - MACN 44034, MACN 44036, 1 ♀ - MACN 44035); Corrientes: Rincón Mercedes (1 ♂ - MACN 48384, 1 ♀ - MACN 48385).   
Mentioned photographs. Wikiaves. com.br (n = 13): BRAZIL. 700594 (Guarapuava, Paraná); 823706 (Caputira, Minas Gerais); 914588 (Taquara, Rio Grande do Sul); 1763524 (Aceguá, Rio Grande do Sul); 1782826 (São Martinho da Serra, Rio Grande do Sul); 1380991 (Afonso Cláudio, Espirito Santo); 1423978 (Afonso Cláudio, Espirito Santo); 1681568 (Pouso Alegre, Minas Gerais); 450514 (Nova Friburgo, Rio de Janeiro); 1518511 (Itatiba, São Paulo); 1084879 (Tibagi, Paraná); 1090972 (Tibagi, Paraná); 1765142 (Bocaina de Minas, Minas Gerais).  
Ecoregistros.org (n = 2). ARGENTINA: 10072 (Reserva Ecológica de Ribera del Norte – San Isidro, Buenos Aires); 10141 (Reserva Ecológica de Ribera del Norte – San Isidro, Buenos Aires.
description: Published as part of Evangelista-Vargas, Oscar Diego & Silveira, Luís Fábio, 2018, Morphological evidence for the taxonomic status of the Bridge's Guan, Penelope bridgesi, with comments on the validity of P. obscura bronzina (Aves: Cracidae), pp. 1-10 in Zoologia (e 12993) (e 12993) 35 on pages 8-9, DOI: 10.3897/zoologia.35.e12993, http://zenodo.org/record/13175438