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 93 species in 18 genera. Opossums originated in South America and entered North ...

. It is native to

Bolivia , image_flag = Bandera de Bolivia (Estado).svg , flag_alt = Horizontal tricolor (red, yellow, and green from top to bottom) with the coat of arms of Bolivia in the center , flag_alt2 = 7 × 7 square p ...

and Peru, 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 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 South America EDGE species Mammals described in 1931 Taxonomy articles created by Polbot {{marsupial-stub