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A New Species of Marsupial Frog (Anura: Hylidae: Gastrotheca) from the Amazonian Slopes of the Cordillera Oriental in Peru

William E. Duellman, Linda Trueb and Edgar Lehr
Copeia
Vol. 2006, No. 4 (Dec. 20, 2006), pp. 595-603
Stable URL: http://www.jstor.org/stable/4126526
Page Count: 9
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Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
A New Species of Marsupial Frog (Anura: Hylidae: Gastrotheca) from the Amazonian Slopes of the Cordillera Oriental in Peru
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Abstract

A new species of marsupial frog, Gastrotheca, with prominent cranial crests is described from humid montane forest on the eastern slopes of the Andes in Departamento de Pasco, Peru. The frog has an exceedingly robust cranium that most closely resembles that of G. cornuta; however, the cranial crests of G. cornuta are less well developed, and less obvious externally, than those of the new taxon. Within the genus Gastrotheca, one of the most variable parts of the skull is the squamosal, which has a variety of articular arrangements with the maxilla, the pterygoid, and in some taxa, the frontoparietal. In contrast to the modifications of dermal cranial elements, the postcranial skeleton seems to be relatively conserved in Gastroiheca. /// Describimos una nueva especie de Gastrotheca de los bosques montanos de la vertiente oriental de los Andes en el Departamento de Pasco, Perú. La nueva especie se caracteriza por sus prominentes crestas craneales y por poseer un cráneo extremadamente robusto, similar al de G. cornuta; sin embargo, las crestas craneales de G. cornuta son menos evidentes extrenamente. En el género Gastrotheca, el hueso escamosal es una de las partes más variables del cráneo, teniendo una variedad de arreglos articulares con el maxilar superior, pterigoideo y, en algunos taxa, con el frontoparietal. En contraste con las modificaciones presentes en los elementos dermales del cráneo, el esqueleto postcraneal parece ser relativamente homogéneo en Gastroiheca.

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