Oryzomys keaysi J.A. Allen, 1900 Oryzomys obtusirostris J.A. Allen, 1900 Zygodontomys obtusirostris: J.A. Allen, 1913 [Nephelomys] keaysi: Weksler, Percequillo, and Voss, 2006
Nephelomys keaysi, also known as Keays's oryzomys[2] or Keays's rice rat,[1] is a species of rodent in the genus Nephelomys of family Cricetidae.[3] 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.[1] 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.[1]
In 1900, Joel Asaph Allen described two rodents from Juliaca, Peru, at an altitude of 6,000 feet (1,800 m) 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[4] and the latter to be close to O. longicaudatus.[5] Oldfield Thomas, in reporting on some specimens from Peru, concurred with the latter allocation, but considered O. keaysi to be part of the group around O. albigularis, and suggested that these should perhaps all be placed in the same species.[6] After re-examining his specimens of O. obtusirostris, Allen reclassified the animal to the genus Zygodontomys in 1913, as Zygodontomys obtusirostris, but admitted that it was atypical for its long tail.[7] In 1944, Philip Hershkovitz published a revision of the genus Nectomys as then understood, and in comparing it to what is now Sigmodontomys alfari, he listed, in a footnote, the names he understood as synonyms of Oryzomys albigularis.[8] This list included both keaysi and obtusirostris, and since then the two have remained associated with each other and with O. albigularis, initially as synonyms or subspecies. By the 1990s, however, the distinctiveness of O. keaysi with respect to both O. albigularis and O. levipes was recognized, and as a result O. keaysi was again classified as a separate species, now with O. obtusirostris as a synonym.[2] When O. albigularis and related species were transferred to the new genus Nephelomys in 2006, this arrangement remained in place, but with the species now known as Nephelomys keaysi.[3]
^ abcdZeballos, H. (2016). "Nephelomys keaysi". IUCN Red List of Threatened Species. 2016: e.T15600A22332362. doi:10.2305/IUCN.UK.2016-2.RLTS.T15600A22332362.en. Retrieved 15 November 2021.
Nephelomyskeaysi, also known as Keays's oryzomys or Keays's rice rat, is a species of rodent in the genus Nephelomys of family Cricetidae. It is found...
new genus, Nephelomys, in 2006, it was retained as a separate species, but under the name of Nephelomys levipes. It is similar to N. keaysi, but smaller...
comparisons among Euryoryzomys, Hylaeamys, Nephelomys, and Transandinomys. Among those genera, Nephelomys is unique in its short ears; in the relatively...
Nephelomys pirrensis, also known as the Mount Pirre rice rat, is a species of rodent in the genus Nephelomys of family Cricetidae. Its type locality is...
a new genus, Nephelomys; since then, the species has been known as Nephelomys devius. Bangs, 1902, p. 34 Samudio, R. (2016). "Nephelomys devius". IUCN...
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...
Nephelomys moerex is a species of rodent in the genus Nephelomys of family Cricetidae. The type locality is at Mindo in western Ecuador, where it has been...
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...
Nephelomys childi is a species of rodent in the genus Nephelomys of family Cricetidae. The type locality is at Bogotá, Colombia, and the type locality...
Nephelomys nimbosus is a species of rodent in the genus Nephelomys of family Cricetidae. Its type locality is at San Antonio on the northeastern slope...
palmipes N. rattus N. squamipes Nephelomys N. albigularis N. auriventer N. caracolus N. childi N. devius N. keaysi N. levipes N. maculiventer N. meridensis...
Nephelomys pectoralis is a species of rodent in the genus Nephelomys of family Cricetidae. Its type locality is 40 miles (64 km) west of the city of Popayán...
Nephelomys caracolus, also known as the Costa Central oryzomys or caracol rice rat, is a species of rodent in the genus Nephelomys of family Cricetidae...
Nephelomys meridensis, also known as the Mérida oryzomys, is a species of rodent in the genus Nephelomys of family Cricetidae. It is found in cloud forest...
Nephelomys auriventer, also known as the golden-bellied oryzomys or Ecuadorian rice rat, is a species of rodent in the genus Nephelomys of family Cricetidae...
least Oecomys, Handleyomys, Euryoryzomys, Transandinomys, Hylaeamys, and Nephelomys, the latter four of which were included in Oryzomys until 2006. Amphinectomys...
broad and short, with the posterior margin between the third molars (M3). Nephelomys levipes is the only other oryzomyine with such a short palate, although...
palmipes N. rattus N. squamipes Nephelomys N. albigularis N. auriventer N. caracolus N. childi N. devius N. keaysi N. levipes N. maculiventer N. meridensis...
palmipes N. rattus N. squamipes Nephelomys N. albigularis N. auriventer N. caracolus N. childi N. devius N. keaysi N. levipes N. maculiventer N. meridensis...
palmipes N. rattus N. squamipes Nephelomys N. albigularis N. auriventer N. caracolus N. childi N. devius N. keaysi N. levipes N. maculiventer N. meridensis...
Some analyses placed it closest to species now placed in Euryoryzomys or Nephelomys, but with low support. O. bolivaris was not included. Species of Oryzomys...
palmipes N. rattus N. squamipes Nephelomys N. albigularis N. auriventer N. caracolus N. childi N. devius N. keaysi N. levipes N. maculiventer N. meridensis...
palmipes N. rattus N. squamipes Nephelomys N. albigularis N. auriventer N. caracolus N. childi N. devius N. keaysi N. levipes N. maculiventer N. meridensis...
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