New records and geographic distribution map of Elachistocleis magnus Toledo, 2010 (Anura: Microhylidae)

Abstract

New locality records and distribution map for the recently described Elachistocleis magnus are here presented. Originally described from Rondônia state, western Brazil (Amazonia), E. magnus was until now recorded for only two additional localities in the same state. The new records presented herein, which considerably enlarge the known range of the species, include three additional Brazilian states – Amazonas, Pará, and Mato Grosso (including records in the Brazilian Cerrado). We provide color description of the species in life, and discuss variation in habitats used by this species.

Geographic range extension of Elachistocleis corumbaensis Piva, Caramaschi & Albuquerque, 2017 (Anura, Microhylidae) with new records in ecotonal zones in the state of Mato Grosso, Brazil

“…Considering that flood pulses are crucial for the formation of reproductive sites and nutrient cycles (Prado et al 2000, Prado et al 2002, Prado et al 2005, Rodrigues et al 2003, these records of E. corumbaensis suggest wider ecological plasticity of the species than previously known. Similarly, E. magna was also found in ecotonal zones between Amazonia and Cerrado (Strüssmann 2012), indicating that other species of the genus are adaptable to environmental variation associated to microclimatic and vegetation differences between biomes. However, more detailed research on the use of microhabitats and the reproductive behavior of E. corumbaensis is needed to support further conclusions.…”

“…cesarii (Miranda-Ribeiro, 1920); E. helianneae Caramaschi, 2010; E. erythrogaster Kwet & Di-Bernardo, 1998; E. magna Toledo, 2010;E. matogrosso Caramaschi, 2010; E. muiraquitan Nunes-De-Almeida & Toledo, 2012; E. piauiensis Caramaschi & Jim, 1983; E. surumu Caramaschi, 2010 and E. corumbaensis Piva, Caramaschi & Albuquerque, 2017. In the Pantanal (Brazil's wetlands) only 4 species of Elachistocleis have been recorded to date: Elachistocleis bicolor, E. cesarii, E. matogrosso and E. corumbaensis (Frost 2018). The latter species was recently described based on specimens from the Parque Municipal de Piraputangas and Maciço do Urucum, both located in the central region of the Brazilian Pantanal in the state of Mato Grosso do Sul (Piva et al 2017).…”

Ficha de Elachistocleis magna

“…Amazonas, Mato Grosso, Pará, Rondônia Biomas Amazônia, Cerrado, Pantanal Bacias Hidrográficas Sub-bacia Madeira, Sub-bacia Paraguai 03, Sub-bacia Tapajós, Sub-bacia Tocantins Baixo, Sub-bacia Xingu Strüssmann et al, 2012).…”

“…Não Elachistocleis magna é noturna e encontrada em ambientes abertos naturais ou antrópicos, em manchas de campo limpo, campo úmido e mata ciliar. Sua reprodução acontece em poças temporárias em pastagens, arrozais ou poças naturais (Strüssmann et al, 2012). A espécie ocorre em áreas degradadas, inclusive na Instituto Chico Mendes de Conservação da Biodiversidade -ICMBio Processo de Avaliação do Risco de Extinção da Fauna Brasileira…”