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.[1]
In 1935 in the Panama Canal Zone, Enders observed Marmosa isthmica to build nests with leaves in a nestbox fixed to a tree.[2]
Notes
^ abFiona A. Reid, A field guide to the mammals of Central America & Southeast Mexico (OUP USA, 2009), p. 50
^Papéis Avulsos de Zoologia: vol. 41 (1999), Issues 1-14, p. 177