The Aceramarca gracile opossum or Bolivian gracile opossum (''Gracilinanus aceramarcae'') is a species of

opossum Opossums () are members of the marsupial order Didelphimorphia () endemic to the Americas. The largest order of marsupials in the Western Hemisphere, it comprises 126 species in 18 genera. Opossums originated in South America and entered North A ...

. It is native to

Bolivia Bolivia, officially the Plurinational State of Bolivia, is a landlocked country located in central South America. The country features diverse geography, including vast Amazonian plains, tropical lowlands, mountains, the Gran Chaco Province, w ...

and

Peru Peru, officially the Republic of Peru, is a country in western South America. It is bordered in the north by Ecuador and Colombia, in the east by Brazil, in the southeast by Bolivia, in the south by Chile, and in the south and west by the Pac ...

, where it occurs in tropical elfin forest habitat. This opossum is mostly arboreal, but it may forage on the ground for food. This species has been recorded at only six locations, but it is not considered to be threatened because its habitat is relatively secure from

deforestation Deforestation or forest clearance is the removal and destruction of a forest or stand of trees from land that is then converted to non-forest use. Deforestation can involve conversion of forest land to farms, ranches, or urban use. Ab ...

and other threats at this time. This mouse opossum does not have a pouch. It is reddish or grayish brown in color with a cream-colored belly and a dark eye ring. It is up to long, not including its slender, scaly tail, which may be over long.Aceramarca Gracile Mouse Opossum.
Evolutionarily Distinct and Globally Endangered (EDGE).

References

Opossums Fauna of the Andes Marsupials of Bolivia Marsupials of Peru EDGE species Mammals described in 1931 Taxa named by George Henry Hamilton Tate Taxonomy articles created by Polbot {{marsupial-stub