The

rodent Rodents (from Latin , 'to gnaw') are mammals of the order Rodentia (), which are characterized by a single pair of continuously growing incisors in each of the upper and lower jaws. About 40% of all mammal species are rodents. They are n ...

subfamily In biological classification, a subfamily (Latin: ', plural ') is an auxiliary (intermediate) taxonomic rank, next below family but more inclusive than genus Genus ( plural genera ) is a taxonomic rank used in the biological classifica ...

Sigmodontinae includes New World rats and

mice A mouse ( : mice) is a small rodent. Characteristically, mice are known to have a pointed snout, small rounded ears, a body-length scaly tail, and a high breeding rate. The best known mouse species is the common house mouse (''Mus musculus'' ...

, 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 The term ''New World'' is often used to mean the majority of Earth's Western Hemisphere, specifically the Americas."America." ''The Oxford Companion to the English Language'' (). McArthur, Tom, ed., 1992. New York: Oxford University Press, p. ...

, but the genera are predominantly

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 sou ...

n, such as

brucie ''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 Mus ...

s. They invaded South America from Central America as part of the

Great American Interchange The Great American Biotic Interchange (commonly abbreviated as GABI), also known as the Great American Interchange and the Great American Faunal Interchange, was an important late Cenozoic paleozoogeographic biotic interchange event in which lan ...

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 niche In ecology, a niche is the match of a species to a specific environmental condition. Three variants of ecological niche are described by It describes how an organism or population responds to the distribution of resources and competitors (for ...

s that the

Murinae The Old World rats and mice, part of the subfamily Murinae in the family Muridae, comprise at least 519 species. Members of this subfamily are called murines. In terms of species richness, this subfamily is larger than all mammal families excep ...

occupy in the

Old World The "Old World" is a term for Afro-Eurasia that originated in Europe , after Europeans became aware of the existence of the Americas. It is used to contrast the continents of Africa, Europe, and Asia, which were previously thought of by thei ...

. The "Thomasomyini" from the Atlantic Forest of

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 ...

are generally thought to be not especially related to the "real" Thomasomyini from the northern

Andes The Andes, Andes Mountains or Andean Mountains (; ) are the longest continental mountain range in the world, forming a continuous highland along the western edge of South America. The range is long, wide (widest between 18°S – 20°S ...

and the

Amazon rainforest The Amazon rainforest, Amazon jungle or ; es, Selva amazónica, , or usually ; french: Forêt amazonienne; nl, Amazoneregenwoud. In English, the names are sometimes capitalized further, as Amazon Rainforest, Amazon Forest, or Amazon Jungle. ...

. The genera ''

Wiedomys ''Wiedomys'' is a genus of South American rodents 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 ...

'' and '' Sigmodon'' are generally placed in their own tribe, and the "phyllotines" ''

Irenomys ''Irenomys tarsalis'', also known as the Chilean climbing mouse, Chilean tree mouse, or long-footed irenomys,Musser and Carleton, 2005, p. 1121 is a rodent found in Chile, from about 36° to 46°S, and in adjacent Argentina, mainly in forests. It ...

'', ''

Punomys ''Punomys'' is a genus 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 sp ...

'', ''

Euneomys ''Euneomys'' is a genus 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 s ...

'', and ''

Reithrodon ''Reithrodon'' is a genus of rodent in the family Cricetidae. It contains the following living species: * Bunny rat (''Reithrodon auritus'') * Naked-soled conyrat (''Reithrodon typicus'') The scientific name translates as "channel tooth" and ...

'' are considered ''incertae sedis''. The name "Sigmodontinae" is based on the name of the

type genus In biological taxonomy, the type genus is the genus which defines a biological family and the root of the family name. Zoological nomenclature According to the International Code of Zoological Nomenclature, "The name-bearing type of a nominal ...

, ''Sigmodon''. This name in turn derives from the Greek roots for "S-tooth" ('' -'' for "S" and ''odont-'' for "tooth", as in orth''odont''ist) for the characteristic of the molars having an S-shape when viewed from above.

Species

The Sigmodontinae are divided into a number of tribes and genera: * Sigmodontalia **Tribe Sigmodontini ***Genus '' Prosigmodon'' **** ''Prosigmodon chihuahuensis'' **** ''Prosigmodon ferrusquiai'' **** ''Prosigmodon holocuspis'' **** ''Prosigmodon oroscoi'' **** ''Prosigmodon tecolotum'' ***Genus '' Sigmodon'' - cotton rats ****Subgenus '' Sigmodon'' *****''Sigmodon hispidus'' species group ****** Allen's cotton rat, ''Sigmodon alleni'' ****** Arizona cotton rat, ''Sigmodon arizonae'' ****** Southern cotton rat, ''Sigmodon hirsutus'' ******

Hispid cotton rat The hispid cotton rat (''Sigmodon hispidus'') is a rodent species long thought to occur in parts of South America, Central America, and southern North America. However, recent taxonomic revisions, based on mitochondrial DNA sequence data, ha ...

, ''Sigmodon hispidus'' ****** Jaliscan cotton rat, ''Sigmodon mascotensis'' ****** Yellow-nosed cotton rat, ''Sigmodon ochrognathus'' ****** Miahuatlán cotton rat, ''Sigmodon planifrons'' ****** Toltec cotton rat, ''Sigmodon toltecus'' ****** Montane cotton rat, ''Sigmodon zanjonensis'' *****''Sigmodon fulviventer'' species group ****** Tawny-bellied cotton rat, ''Sigmodon fulviventer'' ****** Unexpected cotton rat, ''Sigmodon inopinatus'' ****** White-eared cotton rat, ''Sigmodon leucotis'' ****** Peruvian cotton rat, ''Sigmodon peruanus'' ****Subgenus '' Sigmomys'' ***** Alston's cotton rat, ''Sigmodon alstoni'' **Tribe Ichthyomyini - fish- and crab-eating rats & water mice ***Genus '' Anotomys'' - Ecuadorian fish-eating rat **** Aquatic rat, ''Anotomys leander'' ***Genus '' Chibchanomys'' - water mice **** Las Cajas water mouse, ''Chibchanomys orcesi'' **** Chibchan water mouse, ''Chibchanomys trichotis'' ***Genus ''

Ichthyomys ''Ichthyomys'' is a genus of semiaquatic Neotropical rodents in the family Cricetidae. It contains the following species: * Crab-eating rat (''Ichthyomys hydrobates'') * Pittier's crab-eating rat (''I. pittieri'') * Stolzmann's crab-eating rat ...

'' - crab-eating rats ****

Crab-eating rat The crab-eating rat (''Ichthyomys hydrobates'') is a species of semiaquatic rodent in the family Cricetidae. It is found in Colombia, Ecuador, and Venezuela. Its natural habitats are rivers and swamp A swamp is a forested wetland.Keddy, P.A. ...

, ''Ichthyomys hydrobates'' **** Pittier's crab-eating rat, ''Ichthyomys pittieri'' **** Stolzmann's crab-eating rat, ''Ichthyomys stolzmanni'' **** Tweedy's crab-eating rat, ''Ichthyomys tweedii'' ***Genus '' Neusticomys'' - fish-eating rats **** Ferreira's fish-eating rat, ''Neusticomys ferreirai'' **** Montane fish-eating rat, ''Neusticomys monticolus'' **** Musso's fish-eating rat, ''Neusticomys mussoi'' **** Oyapock's fish-eating rat, ''Neusticomys oyapocki'' **** Peruvian fish-eating rat, ''Neusticomys peruviensis'' **** Venezuelan fish-eating rat, ''Neusticomys venezuelae'' ***Genus '' Rheomys'' - water mice **** Mexican water mouse, ''Rheomys mexicanus'' **** Goldman's water mouse, ''Rheomys raptor'' **** Thomas's water mouse, ''Rheomys thomasi'' ****

Underwood's water mouse Underwood's water mouse (''Rheomys underwoodi'') is a species of rodent in the family Cricetidae. It is found in Costa Rican and western Panamanian cloud forest at altitudes from 1500 to 2000 m. This mouse lives near streams in highland forests a ...

, ''Rheomys underwoodi'' * Oryzomyalia **Tribe

Oryzomyini Oryzomyini is a tribe of rodents in the subfamily Sigmodontinae of the family Cricetidae. It includes about 120 species in about thirty genera,Weksler et al., 2006, table 1 distributed from the eastern United States to the southernmost parts of ...

- rice rats, marsh rats, bristly mice, cane mice ***Genus '' Aegialomys'' ****

Galápagos rice rat The Galápagos rice rat (''Aegialomys galapagoensis''), also known as the Galápagos oryzomys, is a species of rodent that is endemic to the Galápagos Islands. Description The Galapagos rice rat is a medium-sized rodent, with a head-body lengt ...

, ''Aegialomys galapagoensis'' **** Yellowish rice rat, ''Aegialomys xanthaeolus'' ***Genus '' Amphinectomys'' - Ucayali water rat **** Ucayali water rat, ''Amphinectomys savamis'' ***Genus '' Cerradomys'' ****'' Cerradomys langguthi'' ****'' Cerradomys maracajuensis'' ****'' Cerradomys marinhus'' ****

Lindbergh’s oryzomys ''Cerradomys scotti'', also known as Lindbergh's oryzomys, is a rodent species from South America in the genus '' Cerradomys''. It is terrestrial and is found in the cerrado (savanna) ecozone of south central Brazil, Bolivia and Paraguay. The spec ...

, ''Cerradomys scotti'' (including ''Oryzomys andersoni'') ****

Terraced rice rat ''Cerradomys subflavus'', also known as the terraced rice rat or flavescent oryzomys, is a rodent species from South America in the genus ''Cerradomys''. It is found in the states of Goiás, São Paulo, and Minas Gerais, Brazil. Populations i ...

, ''Cerradomys subflavus'' ****'' Cerradomys vivoi'' ***Genus ''

Drymoreomys ''Drymoreomys'' is a rodent genus in the tribe Oryzomyini that lives in the Atlantic Forest of Brazil. The single species, ''D. albimaculatus'', is known only from the states of São Paulo (state), São Paulo and Santa Catarina (state), San ...

'' ****'' Drymoreomys albimaculatus'' ***Genus ''

Eremoryzomys ''Eremoryzomys polius'', also known as the gray rice rat or the Marañon oryzomys,Musser and Carleton, 2005, p. 1153 is a rodent species in the tribe Oryzomyini of the family Cricetidae. Discovered in 1912 and first described in 1913 by Wilfr ...

'' **** Grey rice rat, ''Eremoryzomys polius'' ***Genus ''

Euryoryzomys ''Euryoryzomys'' is a genus of rodents in the tribe Oryzomyini of family Cricetidae. It includes six species, which are distributed in South America. Until 2006, its members were included in the genus ''Oryzomys'', but they are not closely relat ...

'' **** Emmons's rice rat, ''Euryoryzomys emmonsae'' **** Monster rice rat, ''Euryoryzomys lamia'' **** Big-headed rice rat, ''Euryoryzomys legatus'' ****

MacConnell's rice rat ''Euryoryzomys macconnelli'', also known as MacConnell's rice rat or MacConnell's oryzomys, is a rodent species from South America. It is found in Brazil, Colombia, Ecuador, French Guiana, Guyana, Peru, Suriname and Venezuela, where it lives in ...

, ''Euryoryzomys macconnelli'' **** Elegant rice rat, ''Euryoryzomys nitidus'' ****

Russet rice rat ''Euryoryzomys russatus'', also known as the russet oryzomys, russet rice rat, or big-headed rice rat, is a species of rodent in the family Cricetidae. It is a member of the genus '' Euryoryzomys'', which was split off from '' Oryzomys'' in 2006 ...

, ''Euryoryzomys russatus'' ***Genus ''

Handleyomys ''Handleyomys'' is a genus of Central and South American rodents in the tribe Oryzomyini of family Cricetidae. It was first described in 2002 to include two species from the Colombian Andes The Andes, Andes Mountains or Andean Mountains ...

'' **** Alfaro's rice rat, ''Handleyomys alfaroi'' **** Chapman's rice rat, ''Handleyomys chapmani'' **** Dusky-footed Handley's mouse, ''Handleyomys fuscatus'' **** Colombian rice rat, ''Handleyomys intectus'' **** Black-eared rice rat, ''Handleyomys melanotis'' **** Striped rice rat, ''Handleyomys rhabdops'' **** Long-nosed rice rat, ''Handleyomys rostratus'' **** Cloud forest rice rat, ''Handleyomys saturatior'' ***Genus ''

Holochilus ''Holochilus'' is a genus of semiaquatic rodents in the tribe Oryzomyini of family Cricetidae,* sometimes called marsh rats. It contains five living species, '' H. brasiliensis'', '' H. chacarius'', '' H. nanus'', '' H. oxe'', and '' H. sciureus' ...

'' - marsh rats ****

Web-footed marsh rat ''Holochilus brasiliensis'', also known as the Brazilian marsh ratMusser, G.G. and Carleton, M.D. 2005. Superfamily Muroidea. Pp. 894–1531 in Wilson, D.E. and Reeder, D.M. (eds.)Mammal Species of the World: a taxonomic and geographic refer ...

, ''Holochilus brasiliensis'' **** Chaco marsh rat, ''Holochilus chacarius'' **** Amazonian marsh rat (or common marsh rat), ''Holochilus sciureus'' ***Genus '' Hylaeamys'' ****'' Hylaeamys acritus'' ****'' Hylaeamys laticeps'' **** Large-headed rice rat, ''Hylaeamys megacephalus'' **** Sowbug rice rat, ''Hylaeamys oniscus'' ****'' Hylaeamys perenensis'' **** Tate's rice rat, ''Hylaeamys tatei'' **** Yungas rice rat, ''Hylaeamys yunganus'' ***Genus ''

Lundomys ''Lundomys molitor'', also known as Lund's amphibious ratMusser and Carleton, 2005, p. 1124 or the greater marsh rat, is a semiaquatic rat species from southeastern South America. Its distribution is now restricted to Uruguay and nearby Rio ...

'' - Lund's amphibious rat ****

Lund's amphibious rat ''Lundomys molitor'', also known as Lund's amphibious ratMusser and Carleton, 2005, p. 1124 or the greater marsh rat, is a semiaquatic rat species from southeastern South America. Its distribution is now restricted to Uruguay and nearby ...

, ''Lundomys molitor'' ***Genus ''

Megalomys ''Megalomys'' is a genus of rodent in the family Cricetidae, part of the tribe Oryzomyini. The genus contains five large rodents from various Caribbean islands, of which two are known to have survived into modern times, but all of which are now ex ...

'' † - giant rice rats **** Barbuda giant rice-rat, ''Megalomys audreyae'' † ****'' Megalomys curazensis'' † **** Antillean giant rice rat, ''Megalomys desmarestii'' † **** Santa Lucian pilorie, ''Megalomys luciae'' † ***Genus ''

Melanomys ''Melanomys'' is a genus of rodent in the tribe Oryzomyini of family Cricetidae, which is distributed in northern South America and adjacent Central America. It contains three species, two of which—'' Melanomys robustulus'' and '' Melanom ...

'' - dark rice rats **** Dusky rice rat, ''Melanomys caliginosus'' **** Robust dark rice rat, ''Melanomys robustulus'' **** Zuniga's dark rice rat, ''Melanomys zunigae'' ***Genus ''

Microakodontomys The transitional colilargo (''Microakodontomys transitorius'') also known as the intermediate lesser grass mouse, is a species of rodent in the tribe Oryzomyini known only from two individuals found in the Brazilian Federal District, Federal Dis ...

'' - Brasilia's mouse **** Transitional colilargo, ''Microakodontomys transitorius'' ***Genus ''

Microryzomys ''Microryzomys'' is a genus of rodent in the tribe Oryzomyini of family Cricetidae. It is closely related to '' Oreoryzomys'', '' Oligoryzomys'', and '' Neacomys''.Weksler, 2006 It contains two species, both restricted to the Andes: '' M. altiss ...

'' - small rice rats ****

Highland small rice rat ''Microryzomys altissimus'', also known as the Páramo colilargo or highland small rice rat, is a species of rodent in the genus ''Microryzomys'' of family Cricetidae. It is found in Colombia, Ecuador, and Peru, but the Colombian segment may be a ...

, ''Microryzomys altissimus'' **** Forest small rice rat, ''Microryzomys minutus'' ***Genus '' Mindomys'' ****

Hammond's rice rat ''Mindomys hammondi'', also known as Hammond's rice rat or Hammond's oryzomys,Musser and Carleton, 2005, p. 1149 is an endangered species of rodent in the tribe Oryzomyini of family Cricetidae. Formerly considered to be related with ''Nect ...

, ''Mindomys hammondi'' ***Genus ''

Neacomys The genus ''Neacomys'', also known as bristly mice because of their spiny fur, includes several species of rodents in the tribe Oryzomyini of family Cricetidae. It is most closely related to ''Oligoryzomys'', ''Oreoryzomys'', and ''Microryzomys'' ...

'' - bristly mice **** Dubost's bristly mouse, ''Neacomys dubosti'' **** Guiana bristly mouse, ''Neacomys guianae'' **** Small bristly mouse, ''Neacomys minutus'' **** Musser's bristly mouse, ''Neacomys musseri'' **** Paracou bristly mouse, ''Neacomys paracou'' **** Painted bristly mouse, ''Neacomys pictus'' **** Common bristly mouse, ''Neacomys spinosus'' **** Narrow-footed bristly mouse, ''Neacomys tenuipes'' ***Genus ''

Nectomys ''Nectomys'' is a genus of rodent in the tribe Oryzomyini of family Cricetidae. Musser and Carleton, 2005. It is closely related to '' Amphinectomys'' and was formerly considered congeneric with ''Sigmodontomys''. It consists of five species, whic ...

'' - water rats **** Western Amazonian nectomys, ''Nectomys apicalis'' **** Magdalena nectomys, ''Nectomys magdalenae'' **** Trinidad water rat, ''Nectomys palmipes'' **** Amazonian nectomys, ''Nectomys rattus'' **** South American water rat, ''Nectomys squamipes'' ***Genus '' Nephelomys'' **** Tomes's rice rat, ''Nephelomys albigularis'' **** Ecuadorian rice rat, ''Nephelomys auriventer'' **** Caracol rice rat, ''Nephelomys caracolus'' ****''

Nephelomys childi ''Nephelomys childi'' is a species of rodent in the genus ''Nephelomys'' of family Cricetidae.Weksler et al., 2006, p. 18 The type locality is at Bogotá, Colombia, and the type locality of its junior synonym, ''oconnelli'', is at a place known ...

'' **** Boquete rice rat, ''Nephelomys devius'' **** Keays's rice rat, ''Nephelomys keaysi'' **** Light-footed rice rat, ''Nephelomys levipes'' ****''

Nephelomys meridensis ''Nephelomys meridensis'', also known as the Mérida oryzomys,Musser and Carleton, 2005, p. 1151 is a species of rodent in the genus ''Nephelomys'' of family Cricetidae.Weksler et al., 2006, p. 18 It is found in cloud forest in the Sierra Nevada ...

'' ****''

Nephelomys moerex ''Nephelomys moerex'' is a species of rodent in the genus ''Nephelomys'' of family Cricetidae.Weksler et al., 2006, p. 18 The type locality is at Mindo in western Ecuador, where it has been recorded together with three other rodents of the or ...

'' ****''

Nephelomys nimbosus ''Nephelomys nimbosus'' is a species of rodent in the genus ''Nephelomys'' of family Cricetidae.Weksler et al., 2006, p. 18 Its type locality is at San Antonio on the northeastern slope of the Tungurahua in the Andes of Ecuador, at an altitude ...

'' ****''

Nephelomys pectoralis ''Nephelomys pectoralis'' is a species of rodent in the genus ''Nephelomys'' of family Cricetidae. Its type locality is west of the city of Popayán, Cauca Department, Colombia, at an altitude of .Allen, 1912, p. 83 American zoologist Joel A ...

'' **** Mount Pirre rice rat, ''Nephelomys pirrensis'' ***Genus '' Nesoryzomys'' - Galapagos mice **** Darwin's Galápagos mouse, ''Nesoryzomys darwini'' † ****

Fernandina rice rat ''Nesoryzomys fernandinae'', also known as the Fernandina nesoryzomys, Fernandina rice rat, or Fernandina Galápagos mouse, is a species of rodent in the genus ''Nesoryzomys'' of family Cricetidae. It is found only on Fernandina in the Galápag ...

, ''Nesoryzomys fernandinae'' **** Indefatigable Galápagos mouse, ''Nesoryzomys indefessus'' **** Santiago Galápagos mouse, ''Nesoryzomys swarthi'' ***Genus ''

Noronhomys ''Noronhomys vespuccii'', also known as Vespucci's rodent, is an extinct rat species from the islands of Fernando de Noronha off northeastern Brazil. Italian explorer Amerigo Vespucci may have seen it on a visit to Fernando de Noronha in 1503, ...

'' - Vespucci's rodent † **** Vespucci's rodent, ''Noronhomys vespuccii'' † ***Genus '' Oecomys'' - Arboreal rice rats **** North Amazonian arboreal rice rat, ''Oecomys auyantepui'' **** Bicolored arboreal rice rat, ''Oecomys bicolor'' **** Atlantic Forest oecomys, ''Oecomys catherinae'' **** Cleber's arboreal rice rat, ''Oecomys cleberi'' **** Unicolored rice rat, ''Oecomys concolor'' **** Yellow arboreal rice rat, ''Oecomys flavicans'' ****

Mamore arboreal rice rat The mamore arboreal rice rat, (''Oecomys mamorae''), also known as the Mamore oecomysMusser and Carleton, 2005 is an arboreal species of rodent in the genus ''Oecomys'' of family Cricetidae. Its distribution extends over much of Bolivia and into ...

, ''Oecomys mamorae'' **** Brazilian arboreal rice rat, ''Oecomys paricola'' **** Dusky arboreal rice rat, ''Oecomys phaeotis'' **** King arboreal rice rat, ''Oecomys rex'' **** Robert's arboreal rice rat, ''Oecomys roberti'' **** Red arboreal rice rat, ''Oecomys rutilus'' **** Arboreal rice rat, ''Oecomys speciosus'' **** Foothill arboreal rice rat, ''Oecomys superans'' ****'' Oecomys sydandersoni'' **** Long-furred rice rat, ''Oecomys trinitatis'' ***Genus ''

Oligoryzomys ''Oligoryzomys'' is a genus of rodents in the tribe Oryzomyini of family Cricetidae. Many species are known as pygmy rice rats or colilargos.Musser and Carleton, 2005 The genus is found from Mexico to Tierra del Fuego and includes approximately 1 ...

'' - pygmy rice rats **** Andean pygmy rice rat, ''Oligoryzomys andinus'' **** Sandy pygmy rice rat, ''Oligoryzomys arenalis'' ****

Brenda's colilargo ''Oligoryzomys brendae'', also known as Brenda's colilargo,Musser and Carleton, 2005 is a South American species of rodent in the genus '' Oligoryzomys''. It is found only in Tucumán Province in northwestern Argentina, but its taxonomic Ta ...

, ''Oligoryzomys brendae'' **** Chacoan pygmy rice rat, ''Oligoryzomys chacoensis'' **** Destructive pygmy rice rat, ''Oligoryzomys destructor'' **** Yellow pygmy rice rat, ''Oligoryzomys flavescens'' ****

Fornes' colilargo ''Oligoryzomys fornesi'', also known as Fornes' colilargo,Musser and Carleton, 2005 is a species of rodent in the genus ''Oligoryzomys'' of family Cricetidae. It is found from northeastern Brazil via Paraguay into northeastern Argentina. Its ka ...

, ''Oligoryzomys fornesi'' **** Fulvous pygmy rice rat, ''Oligoryzomys fulvescens'' ****

Grayish pygmy rice rat ''Oligoryzomys griseolus'', also known as the grizzled colilargoMusser and Carleton, 2005 or the grayish pygmy rice rat, is a species of rodent in the genus ''Oligoryzomys'' of family Cricetidae. It is found in the Andes of Venezuela and nearby C ...

, ''Oligoryzomys griseolus'' **** Long-tailed pygmy rice rat, ''Oligoryzomys longicaudatus'' **** Magellanic pygmy rice rat, ''Oligoryzomys magellanicus'' ****

Small-eared pygmy rice rat ''Oligoryzomys microtis'', also known as the small-eared colilargo or small-eared pygmy rice rat, is a species of rodent in the genus ''Oligoryzomys'' of family Cricetidae. It is found in western Brazil, eastern Peru, Bolivia, and northern Pa ...

, ''Oligoryzomys microtis'' ****'' Oligoryzomys moojeni'' ****

Black-footed pygmy rice rat ''Oligoryzomys nigripes'', also known as the black-footed colilargo or the black-footed pygmy rice rat, is a rodent in the genus ''Oligoryzomys'' of family Cricetidae. Oligoryzomys nigripes is a species that has been further divided into differe ...

, ''Oligoryzomys nigripes'' ****''Oligoryzomys rupestris'' ****Straw-colored pygmy rice rat, ''Oligoryzomys stramineus'' ****Sprightly pygmy rice rat, ''Oligoryzomys vegetus'' ****St. Vincent pygmy rice rat, ''Oligoryzomys victus'' † ***Genus ''Oreoryzomys'' ****''Oreoryzomys balneator'' ***Genus ''Oryzomys'' - rice rats ****''Oryzomys albiventer'' ****Jamaican rice rat, ''Oryzomys antillarum'' † ****Coues' rice rat, ''Oryzomys couesi'' ****Thomas's rice rat, ''Oryzomys dimidiatus'' ****Gorgas's rice rat, ''Oryzomys gorgasi'' ****''Oryzomys nelsoni'' † ****Marsh rice rat, ''Oryzomys palustris'' ****Lower California rice rat, ''Oryzomys peninsulae'' ?† ***Genus ''Pseudoryzomys'' - false rice rats ****Brazilian false rice rat, ''Pseudoryzomys simplex'' ***Genus ''Scolomys''- New World spiny mice ****South American spiny mouse, ''Scolomys melanops'' ****Ucayali spiny mouse, ''Scolomys ucayalensis'' ***Genus ''Sigmodontomys'' - rice water rats ***Alfaro's rice water rat, ''Sigmodontomys alfari'' ***Genus ''Sooretamys'' ****Rat-headed rice rat, ''Sooretamys angouya'' ***Genus ''Tanyuromys'' ****Harris's rice water rat, ''Tanyuromys aphrastus'' ****Lee's long-tailed montane rat, ''Tanyuromys thomasleei'' ***Genus ''Transandinomys'' ****Long-whiskered rice rat, ''Transandinomys bolivaris'' ****''Transandinomys talamancae'' ***Genus ''Zygodontomys'' - cane mice ****Short-tailed cane mouse, ''Zygodontomys brevicauda'' ****Colombian cane mouse, ''Zygodontomys brunneus'' **Tribe Thomasomyini ***Genus ''Abrawayaomys'' - Ruschi's rat ****Ruschi's rat, ''Abrawayaomys ruschii'' ***Genus ''Aepeomys'' - montane mice ****Olive montane mouse, ''Aepeomys lugens'' ****Reig's montane mouse, ''Aepeomys reigi'' ***Genus ''Chilomys'' - Columbian forest mouse ****Colombian forest mouse, ''Chilomys instans'' ***Genus ''Delomys'' - Atlantic Forest rats ****Montane Atlantic Forest rat, ''Delomys collinus'' ****Striped Atlantic Forest rat, ''Delomys dorsalis'' ****Pallid Atlantic Forest rat, ''Delomys sublineatus'' ***Genus ''Phaenomys'' - Rio de Janeiro arboreal rat ****Rio de Janeiro arboreal rat, ''Phaenomys ferrugineus'' ***Genus ''Rhagomys'' - arboreal mice ****Long-tongued arboreal mouse, ''Rhagomys longilingua'' ****Brazilian arboreal mouse, ''Rhagomys rufescens'' ***Genus ''Rhipidomys'' - climbing mice ****Southern climbing mouse, ''Rhipidomys austrinus'' ****Cariri climbing mouse, ''Rhipidomys cariri'' ****Cauca climbing mouse, ''Rhipidomys caucensis'' ****Coues's climbing mouse, ''Rhipidomys couesi'' ****Eastern Amazon climbing mouse, ''Rhipidomys emiliae'' ****Buff-bellied climbing mouse, ''Rhipidomys fulviventer'' ****Gardner's climbing mouse, ''Rhipidomys gardneri'' ****Broad-footed climbing mouse, ''Rhipidomys latimanus'' ****White-footed climbing mouse, ''Rhipidomys leucodactylus'' ****MacConnell's climbing mouse, ''Rhipidomys macconnelli'' ****Cerrado climbing mouse, ''Rhipidomys macrurus'' ****Atlantic Forest climbing mouse, ''Rhipidomys mastacalis'' ****Peruvian climbing mouse, ''Rhipidomys modicus'' ****Splendid climbing mouse, ''Rhipidomys nitela'' ****Yellow-bellied climbing mouse, ''Rhipidomys ochrogaster'' ****Venezuelan climbing mouse, ''Rhipidomys venezuelae'' ****Charming climbing mouse, ''Rhipidomys venustus'' ****Wetzel's climbing mouse, ''Rhipidomys wetzeli'' ***Genus ''Thomasomys'' - Oldfield mice ****Anderson's Oldfield mouse, ''Thomasomys andersoni'' ****Apeco Oldfield mouse, ''Thomasomys apeco'' ****Golden Oldfield mouse, ''Thomasomys aureus'' ****Beady-eyed mouse, ''Thomasomys baeops'' ****Silky Oldfield mouse, ''Thomasomys bombycinus'' ****White-tipped Oldfield mouse, ''Thomasomys caudivarius'' ****Ashy-bellied Oldfield mouse, ''Thomasomys cinereiventer'' ****Ash-colored Oldfield mouse, ''Thomasomys cinereus'' ****Cinnamon-colored Oldfield mouse, ''Thomasomys cinnameus'' ****Daphne's Oldfield mouse, ''Thomasomys daphne'' ****Peruvian Oldfield mouse, ''Thomasomys eleusis'' ****Wandering Oldfield mouse, ''Thomasomys erro'' ****Slender Oldfield mouse, ''Thomasomys gracilis'' ****Hudson's Oldfield mouse, ''Thomasomys hudsoni'' ****Woodland Oldfield mouse, ''Thomasomys hylophilus'' ****Inca Oldfield mouse, ''Thomasomys incanus'' ****Strong-tailed Oldfield mouse, ''Thomasomys ischyrus'' ****Kalinowski's Oldfield mouse, ''Thomasomys kalinowskii'' ****Ladew's Oldfield mouse, ''Thomasomys ladewi'' ****Soft-furred Oldfield mouse, ''Thomasomys laniger''** ****Large-eared Oldfield mouse, ''Thomasomys macrotis'' ****Unicolored Oldfield mouse, ''Thomasomys monochromos'' ****Snow-footed Oldfield mouse, ''Thomasomys niveipes'' ****Distinguished Oldfield mouse, ''Thomasomys notatus'' ****Ashaninka Oldfield mouse, ''Thomasomys onkiro'' ****Montane Oldfield mouse, ''Thomasomys oreas'' ****Paramo Oldfield mouse, ''Thomasomys paramorum'' ****Popayán Oldfield mouse, ''Thomasomys popayanus'' ****Cajamarca Oldfield mouse, ''Thomasomys praetor'' ****Thomas's Oldfield mouse, ''Thomasomys pyrrhonotus'' ****Rhoads's Oldfield mouse, ''Thomasomys rhoadsi'' ****Rosalinda's Oldfield mouse, ''Thomasomys rosalinda'' ****Forest Oldfield mouse, ''Thomasomys silvestris'' ****Taczanowski's Oldfield mouse, ''Thomasomys taczanowskii'' ****Ucucha Oldfield mouse, ''Thomasomys ucucha'' ****Dressy Oldfield mouse, ''Thomasomys vestitus'' ****Pichincha Oldfield mouse, ''Thomasomys vulcani'' ***Genus ''Wilfredomys'' - Wilfred's mice ****Greater Wilfred's mouse, ''Wilfredomys oenax'' **Tribe Wiedomyini ***Genus ''Cholomys'' † ****''Cholomys pearsoni'' † ***Genus ''

'' - red-nosed mouse ****Cerrado red-nosed mouse, ''Wiedomys cerradensis'' ****Red-nosed mouse, ''Wiedomys pyrrhorhinos'' **Tribe Abrotrichini ***Genus ''Abrothrix'' ****Andean altiplano mouse, ''Abrothrix andinus'' ****Hershkovitz's grass mouse, ''Abrothrix hershkovitzi'' ****Gray grass mouse, ''Abrothrix illuteus'' ****Jelski's altiplano mouse, ''Abrothrix jelskii'' ****Woolly grass mouse, ''Abrothrix lanosus'' ****Long-haired grass mouse, ''Abrothrix longipilis'' ****Olive grass mouse, ''Abrothrix olivaceus'' ****Sanborn's grass mouse, ''Abrothrix sanborni'' ***Genus ''Chelemys'' - long-clawed mice ****Magellanic long-clawed akodont, ''Chelemys delfini'' ****Andean long-clawed mouse, ''Chelemys macronyx'' ****Large long-clawed mouse, ''Chelemys megalonyx'' ***Genus ''Geoxus'' - long-clawed mole mouse ****Long-clawed mole mouse, ''Geoxus valdivianus'' ****Pearson's long-clawed mouse, ''Geoxus annectens'' ***Genus ''Notiomys'' - Edward's long-clawed mouse ****Edwards's long-clawed mouse, ''Notiomys edwardsii'' **Tribe Akodontini ***Genus ''Akodon'' - South American grass mice ****Highland grass mouse, ''Akodon aerosus'' ****Colombian grass mouse, ''Akodon affinis'' ****White-bellied grass mouse, ''Akodon albiventer'' ****Azara's grass mouse, ''Akodon azarae'' ****Bolivian grass mouse, ''Akodon boliviensis'' ****Budin's grass mouse, ''Akodon budini'' ****''Akodon caenosus'' ****Cursor grass mouse, ''Akodon cursor'' ****Day's grass mouse, ''Akodon dayi'' ****Dolorous grass mouse, ''Akodon dolores'' ****Smoky grass mouse, ''Akodon fumeus'' ****''Akodon glaucinus'' ****Intelligent grass mouse, ''Akodon iniscatus'' ****Junín grass mouse, ''Akodon juninensis'' ****Koford's grass mouse, ''Akodon kofordi'' ****Lindbergh's grass mouse, ''Akodon lindberghi'' ****Altiplano grass mouse, ''Akodon lutescens'' ****Thespian grass mouse, ''Akodon mimus'' ****Molina's grass mouse, ''Akodon molinae'' ****Soft grass mouse, ''Akodon mollis'' ****Montane grass mouse, ''Akodon montensis'' ****Caparaó grass mouse, ''Akodon mystax'' ****Neuquén grass mouse, ''Akodon neocenus'' ****El Dorado grass mouse, ''Akodon orophilus'' ****Paraná grass mouse, ''Akodon paranaensis'' ****Tarija akodont, ''Akodon pervalens'' ****Philip Myers's akodont, ''Akodon philipmyersi'' ****''Akodon polopi'' ****Reig's grass mouse, ''Akodon reigi'' ****São Paulo grass mouse, ''Akodon sanctipaulensis'' ****Serra do Mar grass mouse, ''Akodon serrensis'' ****Cochabamba grass mouse, ''Akodon siberiae'' ****White-throated grass mouse, ''Akodon simulator'' ****Spegazzini's grass mouse, ''Akodon spegazzinii'' ****Puno grass mouse, ''Akodon subfuscus'' ****Silent grass mouse, ''Akodon surdus'' ****Forest grass mouse, ''Akodon sylvanus'' ****''Akodon tartareus'' ****Chaco grass mouse, ''Akodon toba'' ****Cloud forest grass mouse, ''Akodon torques'' ****Variable grass mouse, ''Akodon varius'' ***Genus ''Neomicroxus'' ****Bogotá grass mouse, ''Neomicroxus bogotensis'' ****Ecuadorian grass mouse, ''Neomicroxus latebricola'' ***Genus ''Bibimys'' - crimson-nosed rats ****Chaco crimson-nosed rat, ''Bibimys chacoensis'' ****Large-lipped crimson-nosed rat, ''Bibimys labiosus'' ****Torres's crimson-nosed rat, ''Bibimys torresi'' ***Genus ''Blarinomys'' - Brazilian shrew-mouse ****Brazilian shrew-mouse, ''Blarinomys breviceps'' ***Genus ''Brucepattersonius'' ****Grey-bellied brucie, ''Brucepattersonius griserufescens'' ****Guaraní brucie, ''Brucepattersonius guarani'' ****Red-bellied brucie, ''Brucepattersonius igniventris'' ****Ihering's hocicudo, ''Brucepattersonius iheringi'' ****Misiones brucie, ''Brucepattersonius misionensis'' ****Arroyo of Paradise brucie, ''Brucepattersonius paradisus'' ****Soricine brucie, ''Brucepattersonius soricinus'' ***Genus ''Deltamys'' - Kemp's grass mouse ****Kemp's grass mouse, ''Deltamys kempi'' ***Genus ''Juscelinomys'' - burrowing mice ****Candango mouse, ''Juscelinomys candango'' † ****Rio Guaporé mouse, ''Juscelinomys guaporensis'' ****Huanchaca mouse, ''Juscelinomys huanchacae'' ***Genus ''Kunsia'' - giant rats ****Fossorial giant rat, ''Kunsia fronto'' ****Woolly giant rat, ''Kunsia tomentosus'' ***Genus ''Lenoxus'' - Andean rat ****Andean rat, ''Lenoxus apicalis'' ***Genus ''Necromys'' - bolo mice ****Pleasant bolo mouse, ''Necromys amoenus'' ****Argentine bolo mouse, ''Necromys benefactus'' ****Rufous-bellied bolo mouse, ''Necromys lactens'' ****Hairy-tailed bolo mouse, ''Necromys lasiurus'' ****Paraguayan bolo mouse, ''Necromys lenguarum'' ****Dark bolo mouse, ''Necromys obscurus'' ****Spotted bolo mouse, ''Necromys punctulatus'' ****Temchuk's bolo mouse, ''Necromys temchuki'' ****Northern grass mouse, ''Necromys urichi'' ***Genus ''Oxymycterus'' - hocicudos ****Argentine hocicudo, ''Oxymycterus akodontius'' ****Amazon hocicudo, ''Oxymycterus amazonicus'' ****Angular hocicudo, ''Oxymycterus angularis'' ****Caparao hocicudo, ''Oxymycterus caparaoe'' ****Atlantic Forest hocicudo, ''Oxymycterus dasytrichus'' ****Spy hocicudo, ''Oxymycterus delator'' ****Small hocicudo, ''Oxymycterus hiska'' ****Hispid hocicudo, ''Oxymycterus hispidus'' ****Quechuan hocicudo, ''Oxymycterus hucucha'' ****Incan hocicudo, ''Oxymycterus inca'' ****Cook's hocicudo, ''Oxymycterus josei'' ****Long-nosed hocicudo, ''Oxymycterus nasutus'' ****Paramo hocicudo, ''Oxymycterus paramensis'' ****Quaestor hocicudo, ''Oxymycterus quaestor'' ****Robert's hocicudo, ''Oxymycterus roberti'' ****Red hocicudo, ''Oxymycterus rufus'' ****''Oxymycterus wayku'' ***Genus ''Podoxymys'' - Roraima mouse ****Roraima mouse, ''Podoxymys roraimae'' ***Genus ''Scapteromys'' - swamp rat ****Argentine swamp rat, ''Scapteromys aquaticus'' ****Waterhouse's swamp rat, ''Scapteromys tumidus'' ***Genus ''Thalpomys'' - cerrado mice ****Cerrado mouse, ''Thalpomys cerradensis'' ****Hairy-eared cerrado mouse, ''Thalpomys lasiotis'' ***Genus ''Thaptomys'' - ebony akodont ****Blackish grass mouse, ''Thaptomys nigrita'' **Tribe Phyllotini ***Genus ''Andalgalomys'' - chaco mice ****Olrog's chaco mouse, ''Andalgalomys olrogi'' ****Pearson's chaco mouse, ''Andalgalomys pearsoni'' ****Roig's chaco mouse, ''Andalgalomys roigi'' ***Genus ''Andinomys'' - Andean mouse ****Andean mouse, ''Andinomys edax'' ***Genus ''Auliscomys'' - big-eared mice ****Bolivian big-eared mouse, ''Auliscomys boliviensis'' ****Painted big-eared mouse, ''Auliscomys pictus'' ****Andean big-eared mouse, ''Auliscomys sublimis'' ***Genus ''Calomys'' - vesper mice ****Bolivian vesper mouse, ''Calomys boliviae'' ****Crafty vesper mouse, ''Calomys callidus'' ****Large vesper mouse, ''Calomys callosus'' ****''Calomys cerqueirai'' ****Caatinga vesper mouse, ''Calomys expulsus'' ****Fecund vesper mouse, ''Calomys fecundus'' ****Hummelinck's vesper mouse, ''Calomys hummelincki'' ****Small vesper mouse, ''Calomys laucha'' ****Andean vesper mouse, ''Calomys lepidus'' ****Drylands vesper mouse, ''Calomys musculinus'' ****Peruvian vesper mouse, ''Calomys sorellus'' ****Delicate vesper mouse, ''Calomys tener'' ****Tocantins vesper mouse, ''Calomys tocantinsi'' ****Córdoba vesper mouse, ''Calomys venustus'' ***Genus ''Chinchillula'' - altiplano chinchilla mouse ****Altiplano chinchilla mouse, ''Chinchillula sahamae'' ***Genus ''Eligmodontia'' - silky desert mice ****Monte gerbil mouse, ''Eligmodontia moreni'' ****Andean gerbil mouse, ''Eligmodontia puerulus'' ****''Eligmodontia hirtipes'' (recently separated from ''Eligmodontia puerulus'') ****Morgan's gerbil mouse, ''Eligmodontia morgani'' ****Eastern Patagonian laucha, ''Eligmodontia typus'' ****Highland gerbil mouse, ''Eligmodontia (typus) bolsonensis'' ***Genus ''

'' - chinchilla mice ****Patagonian chinchilla mouse, ''Euneomys chinchilloides'' ****Burrowing chinchilla mouse, ''Euneomys fossor'' ****Biting chinchilla mouse, ''Euneomys mordax'' ****Peterson's chinchilla mouse, ''Euneomys petersoni'' ***Genus ''Galenomys'' - Garlepp's mouse ****Garlepp's mouse, ''Galenomys garleppi'' ***Genus ''Graomys'' - leaf-eared mice ****Central leaf-eared mouse, ''Graomys centralis'' ****Pale leaf-eared mouse, ''Graomys domorum'' ****Edith's leaf-eared mouse, ''Graomys edithae'' ****Gray leaf-eared mouse, ''Graomys griseoflavus'' ***Genus ''Ichthyurodon'' † ****''Ichthyurodon ameghinoi'' † ***Genus ''

'' - Chilean climbing mouse ****Chilean climbing mouse, ''Irenomys tarsalis'' ***Genus ''Loxodontomys'' ****Southern big-eared mouse, ''Loxodontomys micropus'' ****Pikumche pericote, ''Loxodontomys pikumche'' ***Genus ''Neotomys'' - Andean swamp rat ****Andean swamp rat, ''Neotomys ebriosus'' ***Genus ''Olympicomys'' † ****''Olympicomys vossi'' † ***Genus ''Phyllotis'' - leaf-eared mice ****Friendly leaf-eared mouse, ''Phyllotis amicus'' ****Andean leaf-eared mouse, ''Phyllotis andium'' ****Anita's leaf-eared mouse, ''Phyllotis anitae'' ****Buenos Aires leaf-eared mouse, ''Phyllotis bonariensis'' ****Capricorn leaf-eared mouse, ''Phyllotis caprinus'' ****Darwin's leaf-eared mouse, ''Phyllotis darwini'' ****Definitive leaf-eared mouse, ''Phyllotis definitus'' ****Haggard's leaf-eared mouse, ''Phyllotis haggardi'' ****Lima leaf-eared mouse, ''Phyllotis limatus'' ****Master leaf-eared mouse, ''Phyllotis magister'' ****Osgood's leaf-eared mouse, ''Phyllotis osgoodi'' ****Bunchgrass leaf-eared mouse, ''Phyllotis osilae'' ****Wolffsohn's leaf-eared mouse, ''Phyllotis wolffsohni'' ****Yellow-rumped leaf-eared mouse, ''Phyllotis xanthopygus'' ***Genus ''

'' - puna mouse ****Eastern puna mouse, ''Punomys kofordi'' ****Puna mouse, ''Punomys lemminus'' ***Genus ''

'' - bunny rat ****Bunny rat, ''Reithrodon auritus'' ****Naked-soled conyrat, ''Reithrodon typicus'' ***Genus ''Salinomys'' ****Delicate salt flat mouse, ''Salinomys delicatus'' ***Genus ''Tafimys'' † ****''Tafimys powelli'' ***Genus ''Tapecomys'' - primordial tapecua ****Primordial tapecua, ''Tapecomys primus'' ''Incertae sedis'' *Genus ''Juliomys'' **''Juliomys ossitenuis'' **''Juliomys pictipes'' **''Juliomys rimofrons'' *Genus ''Megaoryzomys'' † **Galápagos giant rat, ''Megaoryzomys curioi'' †

References

* *

External links

* {{Taxonbar, from=Q133373 Sigmodontinae, Cricetidae Extant Zanclean first appearances Mammal subfamilies Taxa named by Johann Andreas Wagner

Species

See also

References

External links