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Made available in DSpace on 2022-04-29T08:28:27Z (GMT). No. of bitstreams: 0 Previous issue date: 2019-10-02 Fundación Agencia Aragonesa para la Investigación y el Desarrollo Even though the herpetofauna richness in the Cerrado–a vast tropical savanna ecoregion of Brazil–is one of the highest of all Brazilian biomes, it still needs to be thoroughly investigated. This study reports the first records of the emerald-eyed tree frog (Boana crepitans), amazon waterfrog (Lithobates palmipes), star-fingered frog (Pipa pipa), and hemprich’s coral snake (Micrurus hemprichii hemprichii) within the states of Maranhão in the northeastern region and Tocantins in the northern region of Brazil. The first state records of Boana crepitans, Pipa pipa and Micrurus h. hemprichii in Tocantins, and Lithobates palmipes in Maranhão, appear in highly climatically suitable areas within the Species Extent of Occurrences (EOO), as predicted in Ecological Niche Modelling (ENM). Our new records of Pipa pipa and Micrurus h. hemprichii, compared to the ENM predictions, represent their southeastern distributional range limits. Our results also suggest that the current gaps on the distributional species ranges probably result from the lack of herpetological surveys in those regions. Departamento de Química Biológica Laboratório de Herpetologia Rua Cel. Antonio Luiz Pimenta Universidade Regional do Cariri Escola de Medicina Veterinária e Zootecnia Laboratório de Anatomia Animal Universidade Federal do Tocantins Centro Colinas do Tocantins Escola SESI Departamento de Ciências Biológicas Faculdade de Ciências de Bauru–campus Bauru Universidade Estadual Paulista Departamento de Química Biológica Programde de Pós-graduação em Bioprospecção Molecular Universidade Regional do Cariri Departamento de Ciências Biológicas Faculdade de Ciências de Bauru–campus Bauru Universidade Estadual Paulista

Even though the herpetofauna richness in the Cerrado – a vast tropical savanna ecoregion of Brazil – is one of the highest of all Brazilian biomes, it still needs to be thoroughly investigated. This study reports the first records of the emerald-eyed tree frog (Boana crepitans), amazon waterfrog (Lithobates palmipes), star-fingered frog (Pipa pipa), and hemprich’s coral snake (Micrurus hemprichii hemprichii) within the states of Maranhão in the northeastern region and Tocantins in the northern region of Brazil. The first state records of Boana crepitans, Pipa pipa and Micrurus h. hemprichii in Tocantins, and Lithobates palmipes in Maranhão, appear in highly climatically suitable areas within the Species Extent of Occurrences (EOO), as predicted in Ecological Niche Modelling (ENM). Our new records of Pipa pipa and Micrurus h. hemprichii, compared to the ENM predictions, represent their southeastern distributional range limits. Our results also suggest that the current gaps on the distributional species ranges probably result from the lack of herpetological surveys in those regions.

Chironectes minimus is a marsupial with unique morphological and ecological characteristics. Owing mainly to its semi-aquatic habits, it is rarely col- lected by conventional methods, being consequently underrepresented in scientific collections. Its distribu- tion in South America is currently considered disjunct, with a north-west and a south-east portion, and a large gap of more than one thousand kilometers that com- prises central Amazonia and a large portion of the Cer- rado. On the basis of four museum specimens and two photographed live animals, we present six new records for the species. These records extend the species ' distri- bution, showing that its range is continuous from south- ern Amazonia and through Cerrado gallery forests, to the southern portion of its range in southeastern South America. Most known records of C. minimus are from preserved riparian forests that usually present certain characteristics, such as fast-flowing water, stony sub- strate, and/or natural holes used as dens. Therefore, we hypothesize that the occurrence of this species is more closely related to well-preserved riparian forests con- taining these types of habitats than to the biomes them- selves. Consequently, this species is probably found through most tropical and subtropical South American biomes that present the aforementioned habitat types. Therefore, the previous distributional gap of the spe- cies, now filled on its central-east portion, was prob- ably a sampling artifact.