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The article discusses the study which presents the possibility of intraspecific seismic communication in frog species on the water surface such as Physalaemus albonotatus and Pseudopaludicola mystacalis. The study observed the species in a flooded area of the northern Pantanal in Brazil and in state of Mato Grosso, Brazil. The study documented the vocalization of P. albonotatus with a Nikon D40 camera on November 28, 2007 in which 10 P. albonotatus were calling in pools at the edge of a flooded area besides a road. The study also observed the water-wave production in P. mystacalis males, which were striking the water surface with the gular region by inflating the vocal sac with and without sound production.

A new species of the genus Physalaemus from the Atlantic Rain Forest of the state of Minas Gerais is described. It belongs to P. signifer species group and is characterized by well-developed vocal sac, second finger with the same size of the fourth, granulate dorsal skin, large inguinal gland with black ocelli, presence of dorso-lateral folds, and advertisement call composed by harmonic notes, generally four, being the last shorter than the others. Information on tadpole external morphology are also presented. [ABSTRACT FROM AUTHOR]

We report the first record of Trachycephalus typhonius for the state of Rio Grande do Sul, Brazil, based on individuals found in the municipalities of Roque Gonzales and Salvador das MissÕes. The original vegetation of these municipalities is characterized as Mesophytic Semideciduous Forest (Atlantic Domain), currently replaced by agricultural activities and urbanization. This record expands the geographical distribution area of this species by approximately 270 km from the nearest known locality, Iguazú, Misiones province, Argentina. [ABSTRACT FROM AUTHOR]