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Nephelomys
''Nephelomys'' is a genus of South American oryzomyine rodents found in the Andes from Bolivia to Venezuela, with a westward extension into the mountains of Costa Rica. Its generic name is derived from the Ancient Greek word ''nephelê'' "mist", referring to the cloud forest habitat of the members of the genus. The species in this genus have historically been placed in ''Oryzomys'', but in 2006, Brazilian zoologist Marcelo Weksler and coworkers described it as a separate genus, because it is not closely related to the type species of ''Oryzomys''.Weksler, 2006 They are most closely related to other members of clade B, including ''Euryoryzomys'', ''Transandinomys'', '' Hylaeamys'', '' Oecomys'', and ''Handleyomys'', with some weak evidence supporting a sister-group relationship to ''Transandinomys''.Weksler et al., 2006, p. 20 ''Oryzomys'' appears in a different part of the oryzomyine evolutionary radiation, perhaps close to ''Holochilus'' and related genera. ''Nephelomys'' spec ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nephelomys Ricardopalmai
''Nephelomys'' is a genus of South American oryzomyine rodents found in the Andes from Bolivia to Venezuela, with a westward extension into the mountains of Costa Rica. Its generic name is derived from the Ancient Greek word ''nephelê'' "mist", referring to the cloud forest habitat of the members of the genus. The species in this genus have historically been placed in ''Oryzomys'', but in 2006, Brazilian zoologist Marcelo Weksler and coworkers described it as a separate genus, because it is not closely related to the type species of ''Oryzomys''.Weksler, 2006 They are most closely related to other members of clade B, including ''Euryoryzomys'', ''Transandinomys'', ''Hylaeamys'', ''Oecomys'', and ''Handleyomys'', with some weak evidence supporting a sister-group relationship to ''Transandinomys''.Weksler et al., 2006, p. 20 ''Oryzomys'' appears in a different part of the oryzomyine evolutionary radiation, perhaps close to ''Holochilus'' and related genera. ''Nephelomys'' species ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nephelomys Albigularis
''Nephelomys albigularis'', also known as the white-throated oryzomys or Tomes's rice rat, is a species of rodent in the genus '' Nephelomys'' of family Cricetidae. Described in 1860, it was the first ''Nephelomys'' species to be discovered. It was originally described in the defunct genus '' Hesperomys'' as ''Hesperomys albigularis'' and considered related to the much smaller ''H. longicaudatus'' (currently ''Oligoryzomys longicaudatus''). By 1894, it was placed in ''Oryzomys'', as ''Oryzomys albigularis'', and associated with what is now '' Nephelomys meridensis''. In the early 1960s, the scope of the species was considerably expanded to include most of the species that are now in ''Nephelomys'', as well as a single name, ''boliviae'', that is currently a synonym of '' Euryoryzomys nitidus''. From 1976 on, several of these were reinstated as separate species.Musser and Carleton, 2005, p. 1145 In 2006, a phylogenetic analysis by Marcelo Weksler of the oryzomyine tribe, in which ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nephelomys Devius
''Nephelomys devius'', also known as the Talamancan oryzomys,Musser and Carleton, 2005 Boquete rice rat, Chiriqui rice rat,Goldman, 1918, p. 80 or montane rice rat, 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 highlands of Costa Rica and western Panama. The upperparts are light brown and become lighter towards the sides. The underparts are buffy or dull white, with a whitish area at the throat. The ears are blackish, as is the nose, and the feet are yellow to brown. The tail is dark brown above and somewhat lighter below. In juveniles, the fur of the upperparts is darker. In three specimens, the total length ranges from , the combined length of the tail vertebrae from , the hindfoot length from , and the skull length from . ''N. devius'' is the westernmost representative of its genus, with a related species, '' N. pirrensis'', known from eastern Panama. In contrast to that species, the ches ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nephelomys Caracolus
''Nephelomys caracolus'', also known as the Costa Central oryzomysMusser and Carleton, 2005, p. 1146 or caracol rice rat, 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 Cordillera de la Costa Central of Aragua, Miranda, and the Distrito Federal in north-central Venezuela at elevations from 1000 to 2500 m. It is nocturnal and terrestrial, and has a varied diet. In most ''Nephelomys'' species, the posterolateral palatal pits, perforations of the palate near the third molar, are conspicuous and receded into a fossa, but in ''N. caracolus'' and the Ecuadorian species '' N. nimbosus'', the pits are much smaller.Wekser et al., 2006, p. 19 Oldfield Thomas originally described the species, in 1914, as a member of ''Oryzomys'', ''Oryzomys caracolus''. From 1960 on, it was included in '' Oryzomys capito'', the current ''Hylaeamys megacephalus'', and subsequently in '' Oryzomys albigularis''. In the 1990 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nephelomys Levipes
''Nephelomys levipes'', also known as the nimble-footed oryzomysMusser and Carleton, 2005, p. 1150 or light-footed rice rat, is a species of rodent in the genus '' Nephelomys'' of family Cricetidae.Weksler et al., 2006, p. 18 It is found on the eastern slope of the Andes from southeastern Peru into west-central Bolivia in cloud forest at elevations from . It occurs in the same general area as its congener '' N. keaysi'', but at higher altitudes. In 1902, Oldfield Thomas first described this species, under the name ''Oryzomys levipes'', on the basis of specimens from both Peru and Bolivia. He compared it to the previously described ''O. keaysi'', the current ''Nephelomys keaysi'', of which he considered it to be a "smaller form".Thomas, 1902, p. 129 In 1944, Philip Hershkovitz relegated both ''O. levipes'' and ''O. keaysi'' to the synonymy of '' O. albigularis'', where it remained until it was reinstated a species in the early 1990s on the basis of genetic and other differences. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nephelomys Auriventer
''Nephelomys auriventer'', also known as the golden-bellied oryzomysMusser and Carleton, 2005, p. 1146 or Ecuadorian rice rat, is a species of rodent in the genus ''Nephelomys'' of family Cricetidae.Weksler et al., 2006, p. 18 Oldfield Thomas originally described it, in 1899, as a species of ''Oryzomys'', ''Oryzomys auriventer'', and considered it most similar to ''Oryzomys aureus'' (currently '' Thomasomys aureus'').Thomas, 1899, p. 380 In 1926, a subspecies was described from an Ecuadorian locality, ''Oryzomys auriventer nimbosus'', and it was suggested that ''O. auriventer'' was closely related to '' O. albigularis''. This proposal was formalized in 1961 by including ''O. auriventer'' within the species ''O. albigularis'', but by 1976 ''O. auriventer'' was recognized again as a separate species. In 2006, ''Oryzomys albigularis'' and related species, including ''O. auriventer'', were transferred to the new genus ''Nephelomys''. Simultaneously, the former subspecies ''nimbosus'' wa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 de Mérida of western Venezuela at elevations from 1100 to 4000 m. It is solitary, nocturnal and terrestrial, and has a varied diet. ''N. meridensis'' has thick fur, which is about 11 mm long at the back. The color of the upperparts is rufous, with brown on the head, and becomes lighter towards the sides. The coloration of the underparts, which is well demarcated from that of the upper parts, is greyish, with a pure white area at the chest. The very large ears are covered with thin dark hairs. The hand and feet, whitish in color, are sparsely haired. The tail is brown above and somewhat paler below, and is not well-furred. The incisive foramina, openings in the palate before the molars, are short. In the holotype, the head and body le ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 of about . The type series included five individuals.Anthony, 1926, p. 4 The fur of the upperparts is brown to blackish, becoming lighter towards the sides. The underparts are grayish, with a white patch at the throat. The long tail virtually lacks hairs and is darker above than below. In the holotype, the total length is , the head and body length is , the combined length of the tail vertebrae is , the hindfoot length (including claws) is , and the length of the skull is . In most species of ''Nephelomys'', the posterolateral palatal pits, perforations of the palate near the third molar, are conspicuous and receded into a depression or fossa, but in ''N. nimbosus'' and '' N. caracolus'', they are much smaller. It was first described, in 1 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nephelomys Keaysi
''Nephelomys keaysi'', also known as Keays's oryzomysMusser and Carleton, 2005, p. 1149 or Keays's rice rat, is a species of rodent in the genus ''Nephelomys'' of family Cricetidae.Weksler et al., 2006, p. 18 It is found from southeastern Peru to northern Bolivia on the eastern slope of the Andes in Yungas humid forest at altitudes of 1000 to 2600 m. Although its continued existence is not in serious danger and it is listed as "least concern", destruction of its habitat may pose a threat to some populations. In 1900, Joel Asaph Allen described two rodents from Juliaca, Peru, at an altitude of on the basis of specimens collected in 1899 and 1900 by H. H. Keays. One he named, after Keays, ''Oryzomys keaysi'', and the other ''Oryzomys obtusirostris''. He considered the former to have no close relatives and the latter to be close to '' O. longicaudatus''. Oldfield Thomas, in reporting on some specimens from Peru, concurred with the latter allocation, but considered ''O. keaysi'' to be ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 oryzomyine group, '' Sigmodontomys aphrastus'', ''Mindomys hammondi'', and ''Handleyomys alfaroi'', as well as three opossums, ''Chironectes minimus'' and unidentified species of ''Didelphis'' and ''Marmosa''. Mindo is a "tiny agricultural community" located at 0°02'S, 78°48'W and above sea level. It was originally described by Oldfield Thomas as a subspecies of '' Oryzomys albigularis''. It remained synonymized under this species until it was recognized as a separate species when the genus ''Nephelomys'' was established for ''Oryzomys albigularis'' and related species in 2006. Unlike in the type species of the genus, ''N. albigularis'', the lacrimal bone of the skull is connected primarily to the maxillary bone, not equally to the maxillar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 as Buenavista, about southeast of Bogotá.Allen, 1913, p. 597 It was named after Mr. George D. Child, who assisted in obtaining the type series.Thomas, 1895, p. 59 The holotype is a medium-sized animal with a long tail. The fur on the back is relatively long, at . The upperparts are generally grey–brown in color, with a darker patch at the middle of the back. There is a clear separation in color between the upperparts and the underparts, which have light grey hairs with white tips. The upper surface of the long feet is whitish. The large ears are black and covered with fine hairs. The tail is brown above and near-white below. The head and body length is , the tail length is , the hindfoot length is , and the ear length is . Both ''N. ch ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nephelomys Maculiventer
''Nephelomys maculiventer'' is a species of rodent in the genus ''Nephelomys'' of family Cricetidae. The type locality is in Colombia, at "Sierra El Libano, alt. 6000 ft, Santa Marta District". It was originally described on the basis of 47 specimens, including 34 from Sierra El Libano and 13 from "Valparaiso". ''N. maculiventer'' has long and soft fur that is rufous in color on the upperparts and becomes lighter towards the sides. This coloration changes abruptly into that of the underparts, which are pure white in some adults. Juveniles are darker in color, with the underparts dark gray. As the animal matures, the gray fur of the underparts is gradually replaced by white fur. The ears are brown and nearly unhaired. The hindfeet are gray. The tail is brown above and lighter below. In 29 individuals of both sexes, the total length varies from , the tail length from , and the hindfoot length (including claws) from . On average, males are slightly larger than females. Joel Asaph Al ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |