Abstract
A new strabomantid frog of the genus Pristimantis Jiménez de la Espada, 1871 is described from the Eastern Pantepui Region, Guiana Shield, northern South America. The new species, Pristimantis aureoventris sp. nov., is known so far from two neighbouring tepuis, namely Wei Assipu Tepui (type locality) at the border between Guyana and Brazil and Mount Roraima in Guyana, and occurs between 2210–2305 m elevation. The new taxon is distinguished from all known congeners by the following combination of characters: Finger I < II; tympanum distinct; basal webbing between Toes IV-V; broad lateral fringes on fingers and toes; ventral skin areolate; vocal slits absent in male; two non-spinous whitish nuptial pads and vocal sac present in male; high degree of pattern polymorphism; throat, chest, and belly golden yellow, usually with reddish brown to dark brown mottling; internal organs little or not visible through the ventral skin in life. The call of the new species consists of bouts of a single amplitude-modulated (decreasing to the end) note repeated at a rate of ca. 18 notes/min with a dominant frequency ranging from 2180 to 2430 Hz.
References
Barrio-Amorós, C.L. (2010) A new Ceuthomantis (Anura: Terrarana: Ceuthomantidae) from Sarisariñama Tepui, Southern Venezuela. Herpetologica, 66, 172–181.
Barrio-Amorós, C.L. & Brewer-Carías, C. (2008) Herpetological results of the 2002 expedition to Sarisariñama, a tepui in Venezuelan Guayana, with the description of five new species. Zootaxa, 1942, 1–68.
Barrio-Amorós, C.L. & Molina, C.R. (2006) A new Eleutherodactylus (Anura: Brachycephalidae) from the Venezuelan Guayana, and redescription of Eleutherodactylus vilarsi (Melin). Zootaxa, 1302, 1–20.
Barrio-Amorós, C.L., Mesa, J., Brewer-Carías, C. & McDiarmid, R.W. (2010) A new Pristimantis (Anura, Terrarana, Strabomantidae) from Churi-tepui in the Chimanta massif, Venezuelan Guayana. Zootaxa, 2483, 35–44.
Boulenger, G.A. (1900) Batrachians. Report on a collection made by Messrs. F.V. McConnell and J.J. Quelch at Mount Roraima in British Guiana. Transactions of the Linnean Society of London, Zoology, Series 2, 8, 55–56.
Carreño, R., Nolla, J. & Astort, J. (2002) Cavidades del Wei-Assipu-Tepui, Macizo del Roraima, Brasil. Boletín de la Sociedad Venezolana de Espeleología, 36, 36–45.
Charif, R.A., Waack, A.M. & Strickman, L.M. (2010) Raven Pro 1.4 User’s Manual. Cornell Laboratory of Ornithology, Ithaca, NY, USA.
Duellman, W.E. & Lehr, E. (2009) Terrestrial-breeding frogs (Strabomantidae) in Peru. NTV Science, Münster, 382 pp.
Duellman, W.E. & Trueb, L. (1986) Biology of amphibians. McGraw-Hill Book Company, New York, 670 pp.
Frost, D.R. (2011) Amphibian Species of the World: an Online Reference. Version 5.5 (31 January, 2011). American Museum of Natural History, New York, USA. Available at: http://research.amnh.org/herpetology/amphibia/index.php. Access in: May 2011.
Frost, D.R., Grant, T., Faivovich, J., Bain, R., Haas, A., Haddad, C.F.B., de Sá, R.O., Donnellan, S.C., Raxworthy, C.J., Wilkinson, M., Channing, A., Campbell, J.A., Blotto, B.L., Moler, P., Drewes, R.C., Nussbaum, R.A., Lynch, J.D., Green, D. & Wheeler, W.C. (2006) The amphibian tree of life. Bulletin of the American Museum of Natural History, 297, 1–370.
Fuentes-Ramos, O. & Barrio-Amorós, C.L. (2004) A new Eleutherodactylus (Anura, Leptodactylidae) from Marahuaka Tepui, Amazonas, Venezuela. Revista de la Academia Colombiana de Ciencias Exactas, Físicas y Naturales, 28, 285–290.
Hedges, S.B., Duellman, W.E. & Heinicke, M.P. (2008) New World direct-developing frogs (Anura: Terrarana): Molecular phylogeny, classification, biogeography, and conservation. Zootaxa, 1737, 1–182.
Heinicke, M.P., Duellman, W.E. & Hedges, S.B. (2007) Major Caribbean and Central American frog faunas originated by ancient oceanic dispersal. Proceedings of the National Academy of Sciences, 104, 10092–10097.
Heinicke, M.P., Duellman, W.E., Trueb, L., Means, D.B., MacCulloch, R.D. & Hedges, S.B. (2009) A new frog family (Anura: Terrarana) from South America and an expanded direct-developing clade revealed by molecular phylogeny. Zootaxa, 2211, 1–35.
Huber, O. (1995a) Geographical and physical features. In: Steyermark, J.A., Berry, P.E. & Holst, B.K. (Eds.), Flora of the Venezuelan Guayana, Vol. 1. Introduction, pp. 1–61. Missouri Botanical Garden, Timber Press, Portland, Oregon.
Huber, O. (1995b) Vegetation. In: Steyermark, J.A., Berry, P.E. & Holst, B.K. (Eds.), Flora of the Venezuelan Guayana, Vol. 1. Introduction, pp. 97–160. Missouri Botanical Garden, Timber Press, Portland, Oregon.
Jiménez de la Espada, M. (1871 "1870") Faunae neotropicalis species quaedam nondum cognitae. Jornal des Sciencias Mathematicas Physicas e Naturales, Academia Real das Sciencias de Lisboa, 3, 57–65.
Kok, P.J.R. & Kalamandeen, M. (2008) Introduction to the taxonomy of the amphibians of Kaieteur National Park, Guyana. Abc Taxa, 5, 1–278.
Lynch, J.D. (1976) The species groups of the South American frogs of the genus Eleutherodactylus (Leptodactylidae). Occasional Papers of the University of Kansas Museum of Natural History, 61, 1–24.
Lynch, J.D. & Duellman, W.E. (1997) Frogs of the genus Eleutherodactylus (Leptodactylidae) in Western Ecuador: Systematics, Ecology and Biogeography. University of Kansas Natural History Museum, Special Publication, 23, 1–236.
Lynch, J.D. & Hoogmoed, M.S.H. (1977) Two new species of Eleutherodactylus (Amphibia, Leptodactylidae) from northeastern South America. Proceedings of the Biological Society of Washington, 90, 424–439.
MacInnes, H. (1974) Climb to the Lost World. Hodder and Stoughton, Ltd., London, 224 pp.
Mägdefrau, H. & Mägdefrau, K. (1994) Biologie von Anuren auf Tepuis der Roraima-Gruppe in Venezuela. In: Herrmann, H.-J. & Zimmermann, H. (Eds.), Beiträge zur Biologie der Anuren. Tetra Werke, Melle, pp. 84–102.
McDiarmid, R.W. & Donnelly, M.A. (2005) The herpetofauna of the Guayana Highlands: amphibians and reptiles of the Lost World. In: Donnelly, M.A., Crother, B.I., Guyer, C., Wake, M.H. & White, M.E. (Eds.), Ecology and Evolution in the Tropics: A Herpetological Perspective, pp. 461–560. University of Chicago Press, Chicago, Illinois.
Means, D.B. & Savage, J.M. (2007) Three new malodorous rainfrogs of the genus Pristimantis (Anura: Brachycephalidae) from the Wokomung Massif in west-central Guyana, South America. Zootaxa, 1658, 39–55.
Melin, D. (1941) Contributions to the knowledge of the Amphibia of South America. Göteborgs Kungliga Vetenskaps och Vitter-Hets Samhalles Handlingar, Ser. B, 1, 1–71.
Myers, C.W. & Donnelly, M.A. (1996) A new herpetofauna from Cerro Yaví, Venezuela: first results of the Robert G. Goelet American Museum-Terramar Expedition to the northwestern tepuis. American Museum Novitates, 3172, 1–56.
Myers, C.W. & Donnelly, M.A. (1997) A tepui herpetofauna on a granitic mountain (Tamacuari) in the borderland between Venezuela and Brazil: Report from the Phipps Tapirapecó Expedition. American Museum Novitates, 3213, 1–71.
Myers, C.W. & Donnelly, M.A. (2008) The summit herpetofauna of Auyantepui, Venezuela: report from the Robert G. Goelet American Museum–Terramar Expedition. Bulletin of the American Museum of Natural History, 308, 1–147.
Parker, H.W. (1940) Undescribed anatomical structures and new species of reptiles and amphibians. Annals and Magazine of Natural History, Series 11(5), 257–274.
Rivero, J.A. (1968) A new species of Eleutherodactylus (Amphibia, Salientia) from the Guayana Region, Edo. Bolívar, Venezuela. Breviora, 306, 1–10.
Rödder, D. & Jungfer, K-H. (2008) A new Pristimantis (Anura, Strabomantidae) from Yuruani-tepui, Venezuela. Zootaxa, 1814, 58–68.
Savage, J.M., Hollingsworth, B.D., Lips, K.R. & Jaslow, A.P. (2004) A new species of rainfrog (genus Eleutherodactylus) from the Serranía de Tabasará, west-central Panama and reanalysis of the fitzingeri species group. Herpetologica, 60(4), 519–529.
Schlüter, A. & Rödder, D. (2007 "2006") Three new frogs of the genus Eleutherodactylus (Amphibia, Leptodactylidae) from Guaiquinima Table Mountain, Bolívar, Venezuela. Herpetotropicos, 3, 88–99.
Villarreal, O., Señaris, C. & DoNascimento, C. (2002) Contribución al conocimiento faunístico del Wei-Assipu-Tepui, Macizo del Roraima, con énfasis en la anurofauna y opiliofauna. Boletín de la Sociedad Venezolana de Espeleología, 36, 46–50.