 Some of the species are also nicknamed by appearance, with the "M. paulensis" known as the slender opossum, the "M. noctivagus" recognized as the largest species and the "M. bishopi" the smallest of the genus.The main habitat for the "Marmosops" is found between the Neotropical humid forests ranging from Panama to the South of Brazil and sometimes in Bolivia as well.The "Marmosops" prefer to live on the grounds of forests, staying away from high branches of trees.