The Panama cross-banded tree frog or pug-nosed tree frog (Smilisca sila) is a species of frog in the family Hylidae found in the humid Pacific lowlands of southwestern Costa Rica to eastern Panama and in the Caribbean lowlands of Panama and northern Colombia.[2][3][4][5] Males of the species utilize synchronous calling to hide their position from predators.[6][7][8][9] Females create basins during amplexus and deposit fertilized eggs onto the surface of the water.[10][11]
^Frost, Darrel R. (2015). "Smilisca sila Duellman and Trueb, 1966". Amphibian Species of the World: an Online Reference. Version 6.0. American Museum of Natural History. Retrieved 20 August 2015.
^Acosta-Galvis, A.R. (2015). "Smilisca sila Duellman & Trueb, 1966". Lista de los Anfibios de Colombia V.05.2015. www.batrachia.com. Retrieved 20 August 2015.