This image shows the male holotype of the new species
Chiasmocleis quilombola. Phoyo Credit: João F. R. Tonini
The Atlantic Forest is a hotspot of biodiversity and one of the most species richness biome of anurans (frogs, tree-frogs, and toads) in the world. However, current levels of diversity might be still underestimated. In the past few years has been an increase in the description of new endemic species of this biome along with the advance of molecular techniques and availability of samples for DNA analysis.
Using a more extensive number of samples for molecular and morphological analysis, researchers from the University of Richmond and The George Washington University described a tiny new species of narrow-mouthed frog from the Microhylidae family in the open access journal ZooKeys.
Chiasmocleis quilombola occurs in the Atlantic Forest of the Espírito Santo State, southeastern Brazil. Despite its modest size, adult males reach only about 14 mm (adult females 17 mm), the new species bears a heroic name inspired by the quilombos communities typical of the Espírito Santo State in Brazil, where the frogs were collected.
The specific epithet "quilombola" used for the species' name refers to the people who inhabited these communities -- slaves who dared to escape during colonial times and find a refuge in the depths of the Atlantic Forest.
Quilombos were used as a refuge for escaped slaves during colonial Portuguese rule in Brazil between 1530 and 1815. Even today in the north of Espírito Santo State quilombola communities still remain and maintain alive their traditions, such as quilombola food and craftwork.
"We were puzzled by the morphological variation of those frogs, which is little, but after the first results of the molecular phylogeny was clear there was higher genetic disparity among them," say João Tonini, Ph. D. student at The George Washington University. Chiasmocleis quilombola occupy coastal areas north of Espírito Santo State, a region that is under strong human pressure, therefore the species may face imminent threat of habitat loss.
João Filipe Tonini, Maurício Forlani, Rafael de Sá. A new species of Chiasmocleis (Microhylidae, Gastrophryninae) from the Atlantic Forest of Espírito Santo State, Brazil. ZooKeys, 2014; 428: 109 DOI:10.3897/zookeys.428.7352