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      Morphological evidence for the taxonomic status of the Bridge’s Guan, Penelope bridgesi, with comments on the validity of P. obscura bronzina (Aves: Cracidae)

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          Abstract

          ABSTRACT Penelope obscura Temminck, 1815 is a forest guan found in Brazil, Paraguay, Uruguay, Argentina and Bolivia. Three subspecies are currently recognized: Penelope o. obscura Temminck, 1815, P. o. bridgesi Gray, 1860, and P. o. bronzina Hellmayr, 1914. The limits between Penelope taxa are poorly understood since few studies have evaluated their differences in plumage, distribution and taxonomy. Based on 104 specimens deposited in ornithological collections we studied the variations in the plumage of P. obscura, including all characters that have been used to describe the included subspecies. Our results show that the plumage of these birds is extremely variable in southern and southeastern Brazil. Without any morphological and morphometric characters to support P. o. bronzina as a valid taxon, we synonymized it with P. obscura. Conversely, P. o. bridgesi, which occurs in the Yungas and the Chaco, is a distinct taxon and should be treated as a separate species from P. obscura.

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          Most cited references 28

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          Measurements of birds,

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            Ornithological gazetteer of Bolivia / Raymond A. Paynter.

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              Ornithological gazetteer of Argentina / Raymond A. Paynter.

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                Author and article information

                Journal
                zool
                Zoologia (Curitiba)
                Zoologia (Curitiba)
                Sociedade Brasileira de Zoologia (Curitiba, PR, Brazil )
                1984-4670
                1984-4689
                2018
                : 35
                Affiliations
                São Paulo São Paulo orgnameUniversidade de São Paulo orgdiv1Museu de Zoologia orgdiv2Seção de Aves Brazil
                Article
                S1984-46702018000100317 S1984-4670(18)03500000317
                10.3897/zoologia.35.e12993

                This work is licensed under a Creative Commons Attribution 4.0 International License.

                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 25, Pages: 0
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                Categories
                Research Article

                Distribution, taxonomy, Penelope, morphology

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