Natural History Museum The University of Kansas 24 Septem ber 1997 Number

نویسنده

  • Erik R. Wild
چکیده

Andean hylid frogs of the genus Hyla are reviewed. Eight groups of Hyla recognized in the Andes are defined; the species in two of these groups are treated in detail. The large H. armata, characterized by hypertrophied forelimbs and clumps of nuptial spines on the prepoUex and humerus in males, and a stream-adapted tadpole with a LTRF up to 15/17, is the sole recognized species in the H. armata group. Accounts of this species and six species (one new) in the H. piilchella group include diagnoses, descriptions of adults, larvae, advertisement calls, and information on ecology, and distribution. Hyla ocapia Andersson, 1938, is placed in the synonymy of H. albonigra Nieden, 1923; H. callipkura Boulenger 1902, is placed iiT the synonymy of H. balzani Boulenger 1898, and H. pulchella andina Miiller, 1924, is recognized as a distinct species. The H. pulchella group is characterized by hypertrophied forelimbs and projecting prepolhcal spines in adult males, and generalized, stream-adapted tadpoles. These characters are shared by frogs in the H. ciraundata group in southeastern Brazil, and the two groups are combined herein into the H. pulchella group. The presence of sharp, projecting prepollical spines is a character shared with several groups of Hyla in the neotropical lowlands. Phylogenetic analysis reveals that the H. cohimbiana and H. labialis groups are sister groups; this clade is the sister of a clade containing several groups of Hyla having a diploid number of 30 chromosomes and inhabiting Andes (H. garagoensis Group) and the neotropical lowlands. Frogs in the H. bogotensis group are characterized by the presence of a mental gland in males; this derived character is shared with H. granosa in the Amazon Basin and the Guiana Region. No unique synapomorphies exist for the frogs assigned to the H. larinopygion group. Too few data are available for Hyla chlorostea to associate it with any lineages of Hyla. Key ivords: Hylidae; Hyla armata, bogotensis, chloroseta, cohimbiana, garagoensis, abialis, larinopygion, and pulchella groups; taxonomy; new species; phylogenetic relationships; South America; Andes. RESLTvIEN Se revisan los hilidos andinos de 1 genero Hyla y se definen ocho grupos de especies. Las especies de dos de ellos son tratadas en detalle. Hyla armata es el linico miembro de su grupo Los adultos de este especie son grandes, caracterizados por tener brazos hipertrofiados y grupos de espinas nupciales en el prepollex y hiimero en los machos; las larvas estan adaptadas a corrientes rapidas, y cuya formula de filas de dientes labiales es de hasta 15/17. La informacion aportada sobre esta especie y otras seis especies (una nueva) de grupo de H. puchella incluye diagnosis, descripdones de adultos, larvas, y llamadas de advertencia, y datos sobre ecologia y distribucion. Hyla ocapia Andersson, 1938, es puesta en la sinonimia de H. albonigra Nieden, 1923; H. callipleura Boulenger, 1902, es puesta en la sinonimia de H. balzani Boulenger, 1898; H. pulchella andina Miiller, 1924, es elevada a rango especifico. El grupo de H. pulchella se caracteriza por tener brazos hipertrofiados, machos con espinas sobresalientes en el prepollex, y larvas generalizadas, adaptadas a aguas corrientes. Estos caracteres son compartidos con las ranas del grupo H. circumdata, del sudeste de Brasii, por lo cual ambos grupos son combinados en el grupo de H. pulchella. La presencia de espinas sobresalientes y afiladas en el prepollex es un caracter compartido por varios grupos de Hyla en las tierras bajas neotropicales. Los analisis filogenenticos efectuados revelan que los grupos de H. cohimbiana e H. labialis son grupos hermanos. Este clado es el grupo hermano de un clado que contiene varios grupos de Hyla con niimero diploide de 30 cromosomas y que habitan los Andes (grupo de H. garagoensis) y en las tierras bajas neotropicales. Las ranas del grupo H. bogotensis se caracterizan por la presencia de una glandula mentoniana en los machos; este caracter derivado es compartido con H. granosa, una especie de la Cuenca Amazonica y la region de las Guayanas. No hay sinapomorfias unicas para las ranas asignadas al grupo de H. larinopygion. Se dispone de muy poca informacion sobre H. chlorostea como para asociarla'con algiin grupo de Hyla. Palabras claves: Hylidae, Grupos de Hyla armata, bogotensis, chloroseta, cohimbiana, garagoensis, labialis, larinopygion, y pulchella; taxonomfa; nueva especie; relaciones filogeneticas; Sudamerica; Andes. Andean Groups of Hyla

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تاریخ انتشار 2010