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Scinax rostratus Peters 1863

Least Concern (IUCN 3.1)
Scinax rostratus
STRI newsletter, 09/03/2007

Common name

Caracas Snouted Treefrog



Species description based on Ibanez et al (1999). A medium sized treefrog with a long snout (males to 46 mm, females to 48 mm). The throat of males is dark (white in females).


Dorsal coloration varies from grey, to brownish, to orangish. Most individuals have a dark brown triangular patch between the eyes; some additional dark markings are usually present on the back. The arms and legs are barred.


The ventral surface is white.

Concealed surfaces

The rear surfaces of the thighs are orange or yellow with prominent dark brown or black vertical bars.

Life history

Breeding season

Breeding occurs during the rainy season (Ibanez et al 1999). Males call from vegetation surrounding temporary and permanent ponds and lakes (Ibanez et al 1999).

Ecology behavior and evolution


One long, low note repeated often (Ibanez et al 1999).

Taxonomy and systematics


  • Kingdom:Animalia
    • Phylum:Chordata
      • Class:Amphibia


Peters 1863


Hyla foliamorta, Hyla rostrata, Ololygon rostrata

Type locality

Caracas (Venezuela)

Habitat and distribution


Lowland and premontane forest to 1300 m.


Costa Rica, French Guiana, Panama, Suriname, Venezuela


Scinax rostratus distribution
Distrubution map (IUCN)


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de Martinez, DR. 1990. Contribucion al conocimiento de las larvas de anfibios de Venezuela.Memorias de la Sociedad de Ciencias Naturales La Salle 49-50: 391-403.

Duellman, WE and JJ Wiens. 1992. The status of the hylid frog genus Ololygon and the recognition of Scinax Wagler, 1830. Occasional Papers of the Museum of Natural History, University of Kansas 151: 1-23.

Duellman, WE. 1970. The Hylid Frogs of Middle America. Volume 1. Monograph of the Museum of Natural History, University of Kansas 1: 1- 753.

Duellman, WE. 1972. South American frogs of the Hyla rostrata group (Amphibia, Anura, Hylidae). Zoologische Mededelingen. Leiden 47: 177-192.

Duellman, WE. 1977. Liste der rezenten Amphibien und Reptilien: Hylidae, Centrolenidae, Pseudidae. Das Tierreich: 1-225.

Duellman, WE. 1986. Two new species of Ololygon (Anura: Hylidae) from the Venezuelan Guayana. Copeia 1986: 864-870.

Duellman, WE. 1997. Amphibians of La Escalera region, Southeastern Venezuela: Taxonomy, Ecology, and Biogeography. Scientific papers of the Natural History Museum of the University of Kansas 2: 1-52.

Duellman, WE. 2001. The Hylid Frogs of Middle America. Society for the Study of Amphibians and Reptiles, Ithaca, New York, USA.

Fouquette, MJ, Jr. 1958. A new tree frog, genus Hyla, from the Canal Zone. Herpetologica 14: 125-128.

Fouquette, MJ, Jr. 1966. Some hylid frogs of the Canal Zone, with special reference to call structure. Caribbean Journal of Science 6(3-4): 167-172.

Fouquette, MJ, Jr. and AJ Delahoussaye. 1977. Sperm morphology in the Hyla rubra group (Amphibia: Anura: Hylidae), and its bearing on generic status. Journal of Herpetology 11: 387-396.

Frost, DR. 1985. Amphibian Species of the World: A Taxonomic and Geographic Reference. Allen Press and the Association of Systematic Collections, Lawrence, Kansas.

Gines, H. 1959. Familias y géneros de anfibios - Amphibia de Venezuela. Memoria de la Sociedad de Ciencias Naturales La Salle: 85-146.

Gorzula, S and JC Señaris. 1998. Contribution to the herpetofauna of the Venezuelan Guayana I. A database. Scientiae Guaianae 8: 1-270.

Hero, J.-M. and A Mijares Urrutia. 1995. The tadpole of Scinax rostrata (Anura: Hylidae). Journal of Herpetology 29(2): 307-311.

Ibañez, R, AS Rand, and CA Jaramillo. 1999. Los anfibios del Monumento Natural Barro Colorado, Parque Nacional Soberanía y areas adyacentes. Mizrachi, E. and Pujol, S.A., Santa Fe de Bogota.

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Köhler, J and W Bohme. 1996. Anuran amphibians from the region of Pre-Cambrian rock outcrops (inselbergs) in northeastern Bolivia, with a note on the gender of Scinax Wagler, 1830 (Hylidae). Revue Française de Aquariologie, Herpétologie 23: 133-140.

La Marca, E. 1992. Catalogo taxonomico, biogeografico y bibliografico de las ranas de Venezuela. Cuadernos Geograficos, Universidad de Los Andes, Mérida.

Leon, JR. 1969. The systematics of the frogs of the Hyla rubra group in Central America. University of Kansas Publications in Natural History 18(6): 505-545.

Lescure, J and C Marty. 2000. Atlas des Amphibiens de Guyane. Patrimoines Naturels, Paris.

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Manzanilla, J, A Fernandez-Badillo, E La Marca, and R Visbal. 1995. Fauna del Parque Nacional Henri Pittier, Venezuela. Composición y distribución de los anfibios. Acta Científica Venezolana 46: 294-302.

Peters, WCH. 1863. Fernere Mittheilungen über neue Batrachier. Monatsberichte der Königlichen Preussische Akademie des Wissenschaften zu Berlin 1863: 445-470.

Rivero, JA. 1961. Salientia of Venezuela. Bulletin of the Museum of Comparative Zoology. Cambridge, Massachusetts 126: 1-207.

Rivero, JA. 1968. Sobre la identidad de Hyla rostrata Peters (Amphibia, Salientia). Acta Biologica Venezuelica 6: 133-138.

Ruiz-Carranza, PM, MC Ardila-Robayo, and JD Lynch. 1996. Lista actualizada de la fauna de Amphibia de Colombia. Revista de la Academia Colombiana de Ciencias Exactas, Físicas y Naturales: 365-415.

Villa, J, LD Wilson, and JD Johnson. 1988. Middle American Herpetology. University of Missouri Press, Columbia.

Yustiz, E. 1996. Aspectos biogeográficos de la herpetofauna de la cuenca hidrográfica del rio Turbio (Estado Lara, Venezuela). In: Pefaur, JE. Ed. Herpetología Neotropical. ULA, Mérida.

Additional resources

Audio Files

Vocalization of Scinax rostratus