As currently defined, tree frogs of the genus Scinax comprises the most species-rich genus within Hylinae. Although in the last decades there have been an increasing number of taxonomic studies on Scinax, populations of several species still deserve further studies to assess their taxonomic status. The purpose of this paper is to contribute to the taxonomy and zoogeography of some species of Scinax from Brazil assigned to the Scinax ruber clade through the description/redescription of their advertisement calls. The advertisement call of S. duartei from topotypic specimens and the call of S. acuminatus are described here for the first time. The call of S. duartei is in disagreement with descriptions from the literature what suggests that an unnamed species is hidden under this specific name. Redescriptions of the calls of S. crospedospilus, S. eurydice, and S. hayii are also provided and compared with previous studies. In order to better assess the taxonomic status of species with advertisement calls that present more than one emphasized frequency, as in some species of the Scinax ruber clade, we recommend special attention in the descriptions of the spectral components of these calls.

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We describe a new species of the Bokermannohyla circumdata group from the Estação de Pesquisa e Desenvolvimento Ambi-ental Galheiro (EPDA-Galheiro) (19o 12′S; 47o 08′W), Municipality of Perdizes, State of Minas Gerais, a mid-altitudinal (~ 850m above sea level) riparian forest environment in the Cerrado of southeastern Brazil. Bokermannohyla napolii sp. nov. is alliedto the large-sized species of the group, diagnosed on the basis of adult morphology/morphometrics, and mainly vocalizations.Adult specimens of the new species are most closely related to those of B. luctuosa and B. circumdata, but can be differentiatedfrom the former by having distal subarticular tubercle of finger III bifid/divided in males, and finger IV bifid/divided in malesand females; and from both B. luctuosa and B. circumdata by a distinctive advertisement call structure. We also provide bioa-coustic data on seven other species of the genus, including previously unknown advertisement calls of B. circumdata and B. carvalhoi, and re-description of the advertisement calls of B. luctuosa, B. ibitiguara, B. nanuzae, B. sazimai, and B. hylax.