A new species of Adenomera (Amphibia: Anura: Leptodactylidae) from the Atlantic rain forest in Santa Catarina, southern Brazil

摘要

As part of the remarkable biodiversity of anurans in the southern range of the Brazilian Mata Atlantica, Adenomera engelsi sp. nov. is described here as a new taxon occurring on the island of Santa Catarina and adjacent coastal mainland. This litter-inhabiting frog is restricted to the Atlantic rain forest biome, living in primary and secondary woods and semi-open areas from sea level to about 900 m a.s.l.,partly in sympatry with its congener A. araucaria. Both species are also referred to the Leptodactylus marmoratus group. Adenomera engelsi sp. nov. is a medium-sized member of the genus (snout-vent length 20.9-22.7 mm in males), characterized by a brown dorsal coloration with a maculated pattern of variable dark spots and blotches and a unique advertisement call, consisting of single, unpulsed notes with duration of 95-160 ms, dominant frequency between 3500 and 4300 Hz, and note repetition rates of 10-24 notes/min.