Micoureus

• Alston's Mouse Opossum Marmosa (Micoureus) alstoni

  

  Alston's mouse opossum has a dull gray-brown back. The 2021 revision places the specimens and photographs it could confirm in Costa Rica's central highlands.

• North-eastern Woolly Mouse Opossum Marmosa (Micoureus) demerarae

  

  The North-eastern Woolly Mouse Opossum is a small marsupial with long, soft fur and dark rings around the eyes. Its tail is longer than the body and furred only near the base.

• South-eastern Woolly Mouse Opossum Marmosa (Micoureus) paraguayana

  

  The South-eastern Woolly Mouse Opossum is a small climbing marsupial with long, dense fur. It eats insects and fruit, and occurs in the Atlantic Forest of eastern South America.

• Little Woolly Mouse Opossum Marmosa (Micoureus) phaea

  

  It has a brown back, a cream-to-orange underside, and white spots at the tip of its tail. The appearance comes from one specimen report; recent taxonomic sources confirm specimens from the foothills of southwestern Colombia.

• Bay-colored Mouse Opossum (Marmosa constantiae) Marmosa (Micoureus) constantiae

  The Bay-colored Mouse Opossum is an arboreal marsupial of central South American forests. Its back is gray-brown, its belly buffy yellow, and the end of its tail is pale.

• North-western Woolly Mouse Opossum Marmosa (Micoureus) germana

  This opossum has pale-brown dorsal fur and a dark tail with a furred base. Records from Loreto in northeastern Peru include white-sand forest and older secondary growth.

• Bare-tailed Woolly Mouse Opossum Marmosa (Micoureus) rutteri

  Marmosa rutteri is a mouse opossum recorded in the western Amazon. Its taxonomic revision reports captures in both seasonally flooded várzea forest and unflooded forest. The coat is described as ranging from grayish olive to yellowish.

• Peruvian Woolly Mouse Opossum Marmosa parda

  Marmosa parda is an opossum known from a few localities in the cloud-forested eastern Andes of central Peru. Specimens examined in the 2020 revision had dull brownish-gray backs and mostly gray-based belly fur.

• North-eastern Woolly Mouse Opossum Marmosa (Micoureus) demerarae

  The North-eastern Woolly Mouse Opossum is a small marsupial with long, soft fur and dark rings around the eyes. Its tail is longer than the body and furred only near the base.

• Alston's Mouse Opossum Marmosa (Micoureus) alstoni

  Alston's mouse opossum has a dull gray-brown back. The 2021 revision places the specimens and photographs it could confirm in Costa Rica's central highlands.

• South-eastern Woolly Mouse Opossum Marmosa (Micoureus) paraguayana

  The South-eastern Woolly Mouse Opossum is a small climbing marsupial with long, dense fur. It eats insects and fruit, and occurs in the Atlantic Forest of eastern South America.

• Little Woolly Mouse Opossum Marmosa (Micoureus) phaea

  It has a brown back, a cream-to-orange underside, and white spots at the tip of its tail. The appearance comes from one specimen report; recent taxonomic sources confirm specimens from the foothills of southwestern Colombia.