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Necromys
''Necromys'' is a genus of South American sigmodontine rodents allied to ''Akodon''. This genus has also been known as ''Cabreramys'' or more recently ''Bolomys'', and the northern grass mouse (''N. urichi'') has recently been transferred from ''Akodon''. History Most of the Brazilian members of the genus ''Necromys'' were first described in the second half of the nineteenth century, and the species from the Andes followed in the first decades of the twentieth century. Small rodents in South America were studied by the British zoologist Oldfield Thomas, curator at the Natural History Museum, London who erected the genus ''Bolomys'' in 1916. Characteristics Members of the genus ''Necromys'' are spread out over a wide area of Central and South America. Morphologically, members of the genus are difficult to distinguish from two other genera found in the same region, the grass mice ''Akodon'' and the cane mice ''Zygodontomys''. In 1987, the Argentine zoologist Osvaldo Reig list ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Necromys Bonapartai
''Necromys'' is a genus of South American sigmodontine rodents allied to ''Akodon''. This genus has also been known as ''Cabreramys'' or more recently ''Bolomys'', and the northern grass mouse (''N. urichi'') has recently been transferred from ''Akodon''. History Most of the Brazilian members of the genus ''Necromys'' were first described in the second half of the nineteenth century, and the species from the Andes followed in the first decades of the twentieth century. Small rodents in South America were studied by the British zoologist Oldfield Thomas, curator at the Natural History Museum, London who erected the genus ''Bolomys'' in 1916. Characteristics Members of the genus ''Necromys'' are spread out over a wide area of Central and South America. Morphologically, members of the genus are difficult to distinguish from two other genera found in the same region, the grass mice ''Akodon'' and the cane mice ''Zygodontomys''. In 1987, the Argentine zoologist Osvaldo Reig liste ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Necromys Lilloi
''Necromys'' is a genus of South American sigmodontine rodents allied to ''Akodon''. This genus has also been known as ''Cabreramys'' or more recently ''Bolomys'', and the northern grass mouse (''N. urichi'') has recently been transferred from ''Akodon''. History Most of the Brazilian members of the genus ''Necromys'' were first described in the second half of the nineteenth century, and the species from the Andes followed in the first decades of the twentieth century. Small rodents in South America were studied by the British zoologist Oldfield Thomas, curator at the Natural History Museum, London who erected the genus ''Bolomys'' in 1916. Characteristics Members of the genus ''Necromys'' are spread out over a wide area of Central and South America. Morphologically, members of the genus are difficult to distinguish from two other genera found in the same region, the grass mice ''Akodon'' and the cane mice ''Zygodontomys''. In 1987, the Argentine zoologist Osvaldo Reig liste ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sigmodontinae
The rodent subfamily Sigmodontinae includes New World rats and mice, with at least 376 species. Many authorities include the Neotominae and Tylomyinae as part of a larger definition of Sigmodontinae. When those genera are included, the species count numbers at least 508. Their distribution includes much of the New World, but the genera are predominantly South American, such as brucies. They invaded South America from Central America as part of the Great American Interchange near the end of the Miocene, about 5 million years ago. Sigmodontines proceeded to diversify explosively in the formerly isolated continent. They inhabit many of the same ecological niches that the Murinae occupy in the Old World. The "Thomasomyini" from the Atlantic Forest of Brazil are generally thought to be not especially related to the "real" Thomasomyini from the northern Andes and the Amazon rainforest. The genera ''Wiedomys'' and '' Sigmodon'' are generally placed in their own tribe, and the "phyll ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spotted Bolo Mouse
The spotted bolo mouse or Ecuadorian akodont (''Necromys punctulatus'') is a species of rodent in the family Cricetidae. It is known from Ecuador and may also occur in Colombia. Little is known of its status and range. Taxonomy ''Necromys punctulatus'' is known from a single specimen in the Natural History Museum, London which was originally collected by the British zoologist Louis Fraser in Ecuador between 1857 and 1859. For a long time this was thought to be a subspecies of the short-tailed cane mouse (''Zygodontomys brevicauda'') but in 1991, the American zoologist Robert S. Voss examined the type specimen and came to the conclusion that it had many features in common with the hairy-tailed bolo mouse (''Necromys lasiurus''), then classified as ''Bolomys lasiurus'', and placed it in the same genus, as ''Bolomys punctata''. Both have since been transferred to the new genus ''Necromys''. Description The spotted bolo mouse is a medium-sized member of its genus, growing to a total ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Necromys Punctulatus
The spotted bolo mouse or Ecuadorian akodont (''Necromys punctulatus'') is a species of rodent in the family Cricetidae. It is known from Ecuador and may also occur in Colombia. Little is known of its status and range. Taxonomy ''Necromys punctulatus'' is known from a single specimen in the Natural History Museum, London which was originally collected by the British zoologist Louis Fraser in Ecuador between 1857 and 1859. For a long time this was thought to be a subspecies of the short-tailed cane mouse (''Zygodontomys brevicauda'') but in 1991, the American zoologist Robert S. Voss examined the type specimen and came to the conclusion that it had many features in common with the hairy-tailed bolo mouse (''Necromys lasiurus''), then classified as ''Bolomys lasiurus'', and placed it in the same genus, as ''Bolomys punctata''. Both have since been transferred to the new genus ''Necromys''. Description The spotted bolo mouse is a medium-sized member of its genus, growing to a total ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hairy-tailed Bolo Mouse
The hairy-tailed bolo mouse or hairy-tailed akodont (''Necromys lasiurus'') is a South American rodent species of the family Cricetidae. It is found in Argentina, Bolivia, Brazil, and Paraguay. Description The hairy-tailed bolo mouse grows to a head-and-body length between , with a tail length of . The ears are small and rounded, and have a sparse covering of hair. The body fur is variable in colour, but usually the back is olive grey to dark brown, the flanks are paler and washed with ochre, and the underparts are white or pale grey. The demarcation line between upper parts and underparts is ill-defined. The tail is bicolor, dark above and pale below, and clad in short, fairly dense fur, and the feet are brown on top with tufts of white hair between the digits, which have strong nails. Distribution and habitat The hairy-tailed bolo mouse is native to southern South America. Its range extends from eastern and central Brazil as far west as Rondônia, through eastern Paraguay to n ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Necromys Lasiurus
The hairy-tailed bolo mouse or hairy-tailed akodont (''Necromys lasiurus'') is a South American rodent species of the family Cricetidae. It is found in Argentina, Bolivia, Brazil, and Paraguay. Description The hairy-tailed bolo mouse grows to a head-and-body length between , with a tail length of . The ears are small and rounded, and have a sparse covering of hair. The body fur is variable in colour, but usually the back is olive grey to dark brown, the flanks are paler and washed with ochre, and the underparts are white or pale grey. The demarcation line between upper parts and underparts is ill-defined. The tail is bicolor, dark above and pale below, and clad in short, fairly dense fur, and the feet are brown on top with tufts of white hair between the digits, which have strong nails. Distribution and habitat The hairy-tailed bolo mouse is native to southern South America. Its range extends from eastern and central Brazil as far west as Rondônia, through eastern Paraguay to n ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Temchuk's Bolo Mouse
Temchuk's bolo mouse (''Necromys temchuki'') is a species of rodent in the family Cricetidae. It is found only in Argentina Argentina (), officially the Argentine Republic ( es, link=no, República Argentina), is a country in the southern half of South America. Argentina covers an area of , making it the second-largest country in South America after Brazil, th .... References * Pardinas, U., D'Elia, G. & Teta, P. 2008.Necromys temchuki 2008 IUCN Red List of Threatened Species. Downloaded on 19 April 2009. Necromys Mammals of Argentina Mammals described in 1980 Taxonomy articles created by Polbot {{Sigmodontinae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Argentine Bolo Mouse
The Argentine bolo mouse (''Necromys benefactus'') is a species of rodent in the family Cricetidae. It is endemic to central Argentina Argentina (), officially the Argentine Republic ( es, link=no, República Argentina), is a country in the southern half of South America. Argentina covers an area of , making it the second-largest country in South America after Brazil, th ..., where it is found in the pampas and the drier espinal (lowland thorn brush). References Mammals of Argentina Necromys Endemic fauna of Argentina Mammals described in 1919 Taxa named by Oldfield Thomas {{Sigmodontinae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rufous-bellied Bolo Mouse
The rufous-bellied bolo mouse or white-chinned akodont, (''Necromys lactens'') is a species of rodent in the family Cricetidae. It is found in Argentina and Bolivia where it inhabits the dry valleys of the eastern Andes. Its conservation status is listed by the International Union for Conservation of Nature as being of "least concern". Description The rufous-bellied bolo mouse reaches a head-and-body length of with a tail of . The head and back are a buffy-brown with fine streaks of black. The flanks are more richly coloured, reddish-brown or cinnamon, and the underparts are a variable shade of cinnamon. The ears are well-haired and there is nearly always a white spot on the chin or throat. The tail is two-coloured, blackish brown above and whitish or buff below. The claws are long and are concealed in tufts of white hair. Distribution and habitat The rufous-bellied bolo mouse is native to the eastern slopes of the Andes in central and southern Bolivia and northern Argentina. It ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paraguayan Bolo Mouse
The Paraguayan bolo mouse or Paraguayan akodont (''Necromys lenguarum'') is a species of rodent in the family Cricetidae. According to the IUCN, it is present in Bolivia, Paraguay, and Peru, and possibly also in Argentina and Brazil. It is found at elevations from in a variety of habitats, including cerrado, chaco, and heath pampas. Taxonomy The taxonomic status of this species is unclear. It was at one time thought to be a subspecies of the dark bolo mouse ''N. obscurus'', and some authorities consider it to be a synonym of '' N. lasiurus''. Mitochondrial DNA analysis supports it being a species in its own right, but the precise range occupied by each species has not been elucidated. Description The Paraguayan bolo mouse is a medium-sized species, being about long including a tail of . The upper surface of head and body is dark grey, and the rump ochre-grey. The flanks are paler and the underparts are white, sometimes with a yellowish tinge. The tail is black above and white ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Necromys Temchuki
Temchuk's bolo mouse (''Necromys temchuki'') is a species of rodent in the family Cricetidae. It is found only in Argentina Argentina (), officially the Argentine Republic ( es, link=no, República Argentina), is a country in the southern half of South America. Argentina covers an area of , making it the second-largest country in South America after Brazil, th .... References * Pardinas, U., D'Elia, G. & Teta, P. 2008.Necromys temchuki 2008 IUCN Red List of Threatened Species. Downloaded on 19 April 2009. Necromys Mammals of Argentina Mammals described in 1980 Taxonomy articles created by Polbot {{Sigmodontinae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |