Two lotic tadpoles from the Andes of southern Peru:Hyla armataandBufo veraguensis, with notes on the call ofHyla armata(Amphibia: Anura: Hylidae and Bufonidae)

Abstract

The tadpoles of Hyla armata (Hylidae) and Bufo veraguensis (Bufonidae) from the Amazonian slopes of the Andes in southern Peru and Bolivia are described. These tadpoles, collected from streams draining the Cordillera Oriental in southern Peru, have modifications reflecting adaptations to stream life. These include, in Hyla armata, an enlarged oral disc with numerous labial tooth rows and complete marginal papillae and, in Bufo veraguensis, a belly sucker, unique within the genus but similar to the more fully‐developed sucker of Atelopus tadpoles. In addition, Bufo veraguensis tadpoles are unusual for Bufo in having a dextral vent, high density of labial teeth with no unbroken rows, and small external nares. The morphology of the tadpoles of Hyla armata and Bufo veraguensis is as yet uninformative regarding the relationships to these two unusual frogs. The advertisement call of Hyla armata consists of a single, high‐pitched note with a dominant frequency of 4.7 KHz.