Isthmian mouse opossum

{{Short description|Species of marsupial}}

{{Speciesbox

| name = Isthmian mouse opossum

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| genus = Marmosa

| parent = Marmosa (Exulomarmosa)

| species = isthmica

| authority = Goldman, 1912

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The Isthmian mouse opossum (Marmosa isthmica) is a species of opossum in the family Didelphidae found in Colombia, Ecuador, and Panama.Fiona A. Reid, A field guide to the mammals of Central America & Southeast Mexico (OUP USA, 2009), [https://books.google.com/books?id=aBEbUaXTWYAC&pg=PA50 p. 50]

Foraging along branches and vines for fruit and insects, with the help of a prehensile tail, M. isthmica was formerly considered a subspecies of Robinson's mouse opossum (Marmosa robinsoni) and is supposed to be similar to it in habit, but following Rossi (2005) it is now deemed a species.

In 1935 in the Panama Canal Zone, Enders observed Marmosa isthmica to build nests with leaves in a nestbox fixed to a tree.Papéis Avulsos de Zoologia: vol. 41 (1999), Issues 1-14, p. 177