Amphibia, Anura, Ceratophryidae, Batrachyla leptopus Bell, 1843: insular distribution extension, Chile

The Archipelago of Chiloé in southern Chile includes Grande de Chiloé island and a series of small islands located on interior seas on the east, and by the Pacific Ocean on the west (Figure 1). The Andes mark the eastern limit of the interior seas, with deep glacial valleys and fjords mantled occasionally by glacial and volcanic deposits (Villagrán et al. 1986; Denton et al. 1999; Moreno and León 2003). Further, the Andes are a formidable climatic and biological boundary, harboring glaciers on the highest summits, some of which were active volcanoes during the Quaternary. The northeastern tip of Grande de Chiloé island is separated from mainland by the Chacao channel (canal de Chacao), a 25 km long seaway oriented along an east-to-west axis, having relatively shallow depths (< 80 m) and narrow width (~ 2.5 km).