Ecnomiohyla fimbrimembra (Taylor, 1948)
© 2008 Devin Edmonds (1 of 13)
Taylor (1948) describes the adult coloration in life as uniformly lavender-brown, the jaw edge blue-black, the upper lip edged by black, throat yellowish and reticulated in purple, undersides of hands and feet lavender, upper limb surfaces faintly barred, and venter marked with cream . The only other adult was described as "yellowish-white," while a transitional juvenile form was described as a mixture of brown, yellow, and green in a lichen-like pattern, displaying color phases (Hayes et al. 1986). In this juvenile, the reticulum of green and brown expands from the lighter to darker color phase, such that the frog ranges from yellow-cream, to green and lichen-like. The iris is red-orange, but may undergo ontogenetic change, and the pupil is horizontal and asymmetrically diamond-shaped in bright light (Hayes et al. 1986). Additionally, this individual possesses a thin, white line running transversely above the vent, and guanophores in the anal folds, limb fringes, on the heel and on the tibiae. The other collected juvenile was noted to vary from the adult in having more conspicuous bands on the limbs, small dark flecks on the flanks, pale colored edges on the upper lip and chin, less pustular skin, and less skull co-ossification (Duellman 1970).
The tadpole of H. fimbrimembra is notable for its tuberculate flanks, small labial disk, and long tail (approximately 77% of its total length). The anus is dextral, the spiracle is sinistral and located below the level of the eye, and the denticles are arranged in two upper and three lower rows. The oral disc is complete, directed ventrally, and not indented laterally. The caudal fin extends as a low ridge on the body, nearly to the spiracle, the nostrils are directed anteriolaterally, and the eyes are directed laterally (entire tadpole diagnosis taken from Savage 1980).
No call has been described for this species.
Distribution and Habitat
Country distribution from AmphibiaWeb's database: Costa Rica, Panama
The habitat has been characterized, using the designations of Holdridge, as the Lower Montane Rainforest Lifezone, prominent with epiphytes and humid forest typically less than 20 m in height (Hayes et al. 1986). Individuals have been collected in the following situations: at night on a small plant bathed in the spray of a waterfall, during the day beneath the bark of a dead, standing tree, and in the late afternoon on an epiphyte 1.2 m above the ground (Taylor 1952; Duellman 1970; Hayes et al. 1986). The only observed tadpole was found in a small borrow-pit ditch (Hayes et al. 1986 personal communication with Norman Scott).
Life History, Abundance, Activity, and Special Behaviors
Trends and Threats
A Spanish-language species account can be found at the website of Instituto Nacional de Biodiversidad (INBio).
Duellman, W.E. (1970). The Hylid Frogs of Middle America. Monograph of the Museum of Natural History, University of Kansas.
Hayes, M.P., Pounds, J.A. and Robinson, D.C. (1986). ''The Fringe-limbed Tree Frog, Hyla fimbrimembra (Anura: Hylidae): new records from Costa Rica.'' Florida Scientist, 49(4), 193-198.
Ibáñez, R., Jaramillo, C.A., Solís, F.A., and Jaramillo, F.E. (1991). ''Hyla fimbrimembra (Fringe-limbed Tree Frog).'' Herpetological Review, 22(4), 133-134.
Savage, J. M., and Heyer, W. R. (1968). ''The tree-frogs (Family Hylidae) of Costa Rica: diagnosis and distribution.'' Revista de Biologia Tropical, 16(1), 1-127.
Savage, J.M. (1980). ''The tadpole of the Costa Rican Fringe-limbed Tree-frog, Hyla fimbrimembra.'' Proceedings of the Biological Society of Washington, 93(4), 1177-1183.
Taylor, E.H. (1948). "Two new hylid frogs from Costa Rica." Copeia, 1948, 233-238.
Taylor, E.H. (1952). "A review of the frogs and toads of Costa Rica." University of Kansas Science Bulletin, 35(5), 577-942.
Originally submitted by: Sean Schoville (first posted 2000-02-25)
Description by: Michelle S. Koo (updated 2021-03-18)
Comments by: Michelle S. Koo (updated 2021-03-18)
Edited by: Meredith J. Mahoney (2021-03-18)
Species Account Citation: AmphibiaWeb 2021 Ecnomiohyla fimbrimembra: Fringe-limbed Treefrog <https://amphibiaweb.org/species/796> University of California, Berkeley, CA, USA. Accessed Mar 20, 2023.
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Citation: AmphibiaWeb. 2023. <https://amphibiaweb.org> University of California, Berkeley, CA, USA. Accessed 20 Mar 2023.
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