Full length paper

La larva de Hyla uruguaya Schmidt, 1944 (Anura: Hylidae), con comentarios sobre su biología y su status taxonómico

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Cuadernos de Herpetología 17 (1-2): 87-100, 2003 kolenc@adinet.com.uy

Abstract

Hyla uruguaya is a poorly known species with controversial taxonomic status. Its finding in Uruguay has been sporadic. In the present work larval morphology, some aspects of reproductive biology, geographical distribution and ecology in Uruguay are addressed. The tadpole has a robust and elliptic body, lateral eyes, high fins, left spiracle, vent tube short and dextral, labial tooth row formula of [(1)(1-1)/(1-1)(2)], a single row of oral papillae with a dorsal gap and some submarginal subangular papillae. A spawn of 398 eggs of 1,3 mm diameter was obtained in the laboratory. The advertisement call, which can be sustained up to 13 min., consists of a series of multipulsed notes of 22 ms long, with a mean dominant frequency of 4146 Hz and a note repetition rate of 4,2 - 4,8 notes/s. The call was heard in the wild since late August, and tadpoles were found up to late February in ponds of open areas in hilly landscapes of NE, E y SE Uruguay. The results allow a reconsideration of the conservation status of the species in Uruguay. The relationship with the cryptic species Hyla pinima is discussed and based on larval characters taxonomic affinities with species of the ruber clade of Scinax are suggested.

Key words:

Hyla uruguaya; larva; canto de anuncio; distribución; taxonomía

Received: Jul. 01, 2003 ▪ Accepted: Nov. 03, 2003

Associate Editor: J. Faivovich
Kolenc, F.; Borteiro, C. & Tedros, M. 2003. La larva de Hyla uruguaya Schmidt, 1944 (Anura: Hylidae), con comentarios sobre su biología y su status taxonómico. Cuadernos de Herpetología 17: 87-100.