There is no author summary for this article yet. Authors can add summaries to their articles on ScienceOpen to make them more accessible to a non-specialist audience.
Here we present new records of the mouse opossum Marmosa (Stegomamosa) lepida (Thomas,
1888) collected in the recently flooded region of the Xingu River during the construction
of the Belo Monte hydropower dam in the state of Pará, Brazil. This taxon is rarely
captured, and it has often been misidentified as other similar genera of arboreal
marsupials, such as Gracilinanus. Our specimens were identified morphologically and
genetically using partial DNA of the mitochondrial cytochrome b gene. The new records
increase the known distribution by about 250 km to the southeast.