Akodontini

	Akodontini Akodontini is the second most speciose rodent tribe of the subfamily Sigmodontinae. It includes at least 106 living species in 19 genera and is distributed mainly in the southern half of South America, with only two genera extending into Guyana (''Podoxymys'') and Venezuela (''Necromys''). It also includes genera previously placed in tribe Scapteromyini. The following genera are now generally recognized: ''Akodon'' ''Bibimys'' '' Blarinomys'' ''Brucepattersonius'' '' Deltamys'' ''Juscelinomys'' ''Kunsia'' '' Lenoxus'' ''Necromys'' (previously ''Bolomys'' or ''Cabreramys'') '' Neomicroxus'' ''Oxymycterus'' ''Podoxymys'' ''Scapteromys'' ''Thalpomys'' '' Thaptomys'' ''Chalcomys'', ''Hypsimys'', and ''Microxus'' have been synonymized under the genus ''Akodon''. Several other genera were previously placed in Akodontini, but are now placed in a separate tribe Abrotrichini Abrotrichini, also known as the Andean clade or southern Andean clade,Musser and Carleton, 2005, ... [...More Info...] [...Related Items...] OR:* [Wikipedia] [Google] [Baidu]
	Akodontini Akodontini is the second most speciose rodent tribe of the subfamily Sigmodontinae. It includes at least 106 living species in 19 genera and is distributed mainly in the southern half of South America, with only two genera extending into Guyana (''Podoxymys'') and Venezuela (''Necromys''). It also includes genera previously placed in tribe Scapteromyini. The following genera are now generally recognized: ''Akodon'' ''Bibimys'' '' Blarinomys'' ''Brucepattersonius'' '' Deltamys'' ''Juscelinomys'' ''Kunsia'' '' Lenoxus'' ''Necromys'' (previously ''Bolomys'' or ''Cabreramys'') '' Neomicroxus'' ''Oxymycterus'' ''Podoxymys'' ''Scapteromys'' ''Thalpomys'' '' Thaptomys'' ''Chalcomys'', ''Hypsimys'', and ''Microxus'' have been synonymized under the genus ''Akodon''. Several other genera were previously placed in Akodontini, but are now placed in a separate tribe Abrotrichini Abrotrichini, also known as the Andean clade or southern Andean clade,Musser and Carleton, 2005, ... [...More Info...] [...Related Items...] OR:* [Wikipedia] [Google] [Baidu]
	Abrotrichini Abrotrichini, also known as the Andean clade or southern Andean clade,Musser and Carleton, 2005, p. 1087 is a tribe of rodents in the subfamily Sigmodontinae.D'Elía et al., 2007, p. 188 It includes about fifteen species in four genera,Musser and Carleton, 2005 distributed in South America from southern Peru to southernmost South America, including the Patagonian steppes. The earliest known fossils are from the Pliocene of Argentina. Taxonomy Abrotrichines were universally placed in the tribe Akodontini until the 1990s, and some were even classified within the genus ''Akodon''. Allozyme studies in the early 1990s first provided evidence for their distinction from Akodontini, and in 1999 a study analyzing sequences of the mitochondrial cytochrome ''b'' gene found further evidence for the distinction between Akodontini and this group and proposed the name Abrotrichini for the latter.Smith and Patton, 1999, p. 106 The name Abrotrichini remained formally unavailable ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Brucepattersonius ''Brucepattersonius'' is a genus of rodents within the tribe Akodontini from southeastern South America. Also known as brucies, the genus is named after Bruce Patterson, MacArthur Curator at the Department of Zoology (Mammals), at the Field Museum of Natural History, Chicago. History In 1998, Philip Hershkovitz described the genus and four species from the Atlantic Forest of southeastern Brazil and also included the previously described species ''B. iheringi'', which had been included in '' Oxymycterus'' and some other genera before. Two years later, Mares and Braun described three additional species from Misiones Province, northeastern Argentina, on the basis of a total of three specimens. In 2006, Vilela and others found that two of Hershkovitz's species were in fact identical. More material from Argentina was later reported, but not assigned to species.Vilela, J. F., J. A. de Oliveira, and C. R. Bonvicino (2006). Taxonomic status of ''Brucepattersonius albinasus'' (Ro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Akodon ''Akodon'' is a genus consisting of South American grass mice. They mostly occur south of the Amazon Basin and along the Andes north to Venezuela, but are absent from much of the basin itself, the far south of the continent, and the lowlands west of the Andes. ''Akodon'' is one of the most species-rich genera of Neotropical rodents. Species of ''Akodon'' are known to inhabit a variety of habitats from tropical and tropical moist forests to altiplano and desert. Fossils are known from the late Pliocene onwards. Taxonomy ''Akodon'' is the largest genus in the tribe Akodontini. Three of its synonyms—''Chalcomys'', ''Hypsimys'', and particularly ''Microxus''—have sometimes been regarded as distinct genera. Neomicroxus was separated in 2013. Previously associated with ''Akodon'', the genera ''Abrothrix'', '' Deltamys'', ''Necromys'', ''Thalpomys'', and '' Thaptomys'' are currently recognized as distinct. Some species of the tribe Abrotrichini are called akodons. The genus cont ... [...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]
	Thalpomys ''Thalpomys'' is a genus of South American rodents in the tribe Akodontini of family Cricetidae. Two species are known, both found in the cerrado tropical savanna ecoregion of central Brazil. They are as follows: * Cerrado mouse (''Thalpomys cerradensis'') * Hairy-eared cerrado mouse The hairy-eared cerrado mouse (''Thalpomys lasiotis'') or hairy-eared akodont, is a rodent species from South America. It is found in the cerrado grassland of Brazil. Description The hairy-eared cerrado mouse has a head-and-body length of less t ... (''Thalpomys lasiotis'') References Rodent genera Fauna of the Cerrado Taxa named by Oldfield Thomas {{Sigmodontinae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Scapteromys ''Scapteromys'' is a genus of South American rodents in the tribe Akodontini of family Cricetidae. Three species are known, found in northern Argentina, southern Brazil, Paraguay and Uruguay. They are as follows: * Argentine swamp rat (''Scapteromys aquaticus'') * Plateau swamp rat (''Scapteromys meridionalis'') * Waterhouse's swamp rat (''Scapteromys tumidus'') Species are semiaquatic, living in and near marshes and other bodies of water. They reach a body length of 15 to 20 cm and a tail length of 13–17 cm, and weigh 110-200 g. Fur color is dark gray on top and light gray on the underside. They are primarily crepuscular and nocturnal. Their diet consists mainly of insects; they also consume other invertebrates and plant material. The three species differ in karyotype A karyotype is the general appearance of the complete set of metaphase chromosomes in the cells of a species or in an individual organism, mainly including their sizes, numbers, and shapes. Karyotyp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Podoxymys The Roraima mouse (''Podoxymys roraimae'') is a species of rodent in the family Cricetidae The Cricetidae are a family of rodents in the large and complex superfamily Muroidea. It includes true hamsters, voles, lemmings, muskrats, and New World rats and mice. At almost 608 species, it is the second-largest family of mammals, and h .... It is the only species in the genus ''Podoxymys''. It is found only in Guyana. References Sources * Akodontini Mammals described in 1929 Taxonomy articles created by Polbot Fauna of the Tepuis {{Sigmodontinae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	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]
	Bibimys ''Bibimys'' is a genus of new world rats. Commonly known as the crimson-nosed rats, there are three species: '' Bibimys chacoensis'' - Chaco crimson-nosed rat - found in north-east Argentina and Paraguay '' Bibimys labiosus'' - Large-lipped crimson-nosed rat - south-east Brazil '' Bibimys torresi'' - Torres's crimson-nosed rat - 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 ... A extinct species '' Bibimys massoiai'' is known from Quaternary remains in northeastern Brazil. Presently, species of ''Bibimys'' are found in Argentina, Brazil and Paraguay. As with most of the species in the South American Sigmodontinae, ''Bibimys'' has been arranged as a genus based mainly on morphological differences from the other living genera. ''Bibimys'' belongs to the ... [...More Info...] [...Related Items...] OR:* [Wikipedia] [Google] [Baidu]
	Kunsia The woolly giant rat (''Kunsia tomentosus'') is a species of large burrowing rodent native to South America. No subspecies are currently recognised. It is the only member of the genus ''Kunsia''. Description The woolly giant rat is an exceptionally large rat, the largest living species of sigmodontine rodent, with short limbs and powerful claws. Nonetheless, individuals vary considerably in size, ranging from in head-body length, with a relatively short tail long. Body weight varies from ; no other sigmodontine species has a maximum weight above . The fur is thick and coarse, with an almost uniform shade of dark grey or brown across the whole of the body, although slightly paler on the throat and underside. The tail is scaly and almost hairless, and dark grey to blackish in colour. The rhinarium is large, and the ears short and rounded. Females have eight teats. Distribution and habitat Woolly giant rats inhabit the cerrado of central Brazil, and the Llanos de Moxos of norther ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]