Scientists have identified a new species in the marsupial genus Marmosa from a single specimen collected on the eastern side of the Andes in San Martín department, Peru. Marmosa chachapoya. Image credit: Pedro Peloso. Marmosa is a genus of relatively small Neotropical mammals in the family Didelphidae. It is one of three genera that are known as mouse opossums; the others are Thylamys and Tlacuatzin. “Marmosa is the most speciose genus of American...
