The rufous mouse opossum (''Marmosa lepida'') or little rufous mouse opossum is an opossum

species In biology, a species is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate s ...

from

South America South America is a continent entirely in the Western Hemisphere and mostly in the Southern Hemisphere, with a relatively small portion in the Northern Hemisphere at the northern tip of the continent. It can also be described as the sout ...

. The species has been found in Bolivia, Suriname,

French Guinea French Guinea (french: Guinée française) was a French colonial possession in West Africa. Its borders, while changed over time, were in 1958 those of the current independent nation of Guinea. French Guinea was established by France in 1891, ...

Brazil Brazil ( pt, Brasil; ), officially the Federative Republic of Brazil (Portuguese: ), is the largest country in both South America and Latin America. At and with over 217 million people, Brazil is the world's fifth-largest country by area ...

, Colombia,

Ecuador Ecuador ( ; ; Quechua: ''Ikwayur''; Shuar: ''Ecuador'' or ''Ekuatur''), officially the Republic of Ecuador ( es, República del Ecuador, which literally translates as "Republic of the Equator"; Quechua: ''Ikwadur Ripuwlika''; Shuar: ' ...

, Guyana,

Peru , image_flag = Flag of Peru.svg , image_coat = Escudo nacional del Perú.svg , other_symbol = Great Seal of the State , other_symbol_type = National seal , national_motto = "Firm and Happy f ...

and Suriname in lowland

tropical rainforest Tropical rainforests are rainforests that occur in areas of tropical rainforest climate in which there is no dry season – all months have an average precipitation of at least 60 mm – and may also be referred to as ''lowland equa ...

at altitudes from 100 to 1000 m. It is presumed to feed on insects and fruit, like its close relatives. It is considered a

monotype Monotyping is a type of printmaking made by drawing or painting on a smooth, non-absorbent surface. The surface, or matrix, was historically a copper etching plate, but in contemporary work it can vary from zinc or glass to acrylic glass. The ...

. It is smaller in size and has a brighter red colored fur, distinguishing it from other congeners. Though the species has been known for over a century, very few specimens have been studied, most of these from areas below 600m and taken from western edges of the Amazon basin and Guianas. Its dorsal

pelage Fur is a thick growth of hair that covers the skin of mammals. It consists of a combination of oily guard hair on top and thick underfur beneath. The guard hair keeps moisture from reaching the skin; the underfur acts as an insulating blanket ...

is reddish-brown and its

ventral Standard anatomical terms of location are used to unambiguously describe the anatomy of animals, including humans. The terms, typically derived from Latin or Greek roots, describe something in its standard anatomical position. This position prov ...

pelage is grayish. Researchers believe this coloring is product of adaptation to a humid

forest A forest is an area of land dominated by trees. Hundreds of definitions of forest are used throughout the world, incorporating factors such as tree density, tree height, land use, legal standing, and ecological function. The United Nations' ...

environment.

References

Opossums Marsupials of South America Mammals of Bolivia Mammals of Brazil Mammals of Colombia Mammals of Ecuador Mammals of Guyana Mammals of Peru Mammals of Suriname Fauna of the Amazon Mammals described in 1888 Taxa named by Oldfield Thomas {{marsupial-stub