Marmosops

• Gray Slender Opossum Marmosops (Marmosops) incanus

  

  Males are larger than females, and coat color varies with age and region. It lives along the Atlantic coast of eastern Brazil and searches for insects on both the ground and in trees.

• White-bellied Slender Opossum Marmosops (Marmosops) noctivagus

  

  The white-bellied slender opossum has dull reddish-brown dorsal fur. In a lowland Peruvian rainforest study, it was recorded in both terrestrial and lower arboreal small-mammal communities.

• Tschudi's Slender Opossum Marmosops (Marmosops) caucae

  This small opossum ranges from southern Central America into northwestern South America. An Ecuadorian museum account describes its coat and facial pattern, and a 2025 paper reports one observation of it eating a venomous spider.

• Creighton's Slender Opossum Marmosops (Marmosops) creightoni

  Creighton's Slender Opossum is recorded from wet montane forest in Bolivia's Río Zongo valley. The original description reports a dark chocolate-brown back and a slightly paler underside.

• Spectacled Slender Opossum Marmosops (Marmosops) ocellatus

  This small opossum is recorded in Bolivia. Its back is sandy gray-brown and its underside is cream-colored. The original paper also reports the collection setting in Bolivia's Cerrado region.

• Brazilian Slender Opossum Marmosops (Marmosops) paulensis

  Its back is dark gray-brown with a reddish wash, its belly is cream-colored, and its tail is longer than its body. It lives in southeastern Brazilian mountain forests and eats many fruits.

• Soini's Slender Opossum Marmosops (Marmosops) soinii

  A small marsupial recorded in Peru's Yavarí-Ucayali interfluvium. Most of the 23 specimens in the account came from primary upland forest.

• White-bellied Slender Opossum Marmosops (Marmosops) noctivagus

  The white-bellied slender opossum has dull reddish-brown dorsal fur. In a lowland Peruvian rainforest study, it was recorded in both terrestrial and lower arboreal small-mammal communities.

• Gray Slender Opossum Marmosops (Marmosops) incanus

  Males are larger than females, and coat color varies with age and region. It lives along the Atlantic coast of eastern Brazil and searches for insects on both the ground and in trees.