Nephelomys levipes, also known as the nimble-footed oryzomys[2] or light-footed rice rat,[1] is a species of rodent in the genus Nephelomys of family Cricetidae.[3] It is found on the eastern slope of the Andes from southeastern Peru into west-central Bolivia in cloud forest at elevations from 1,800 to 3,200 metres (5,900 to 10,500 ft).[1] It occurs in the same general area as its congener N. keaysi, but at higher altitudes.[2]
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".[4] In 1944, Philip Hershkovitz relegated both O. levipes and O. keaysi to the synonymy of O. albigularis,[5] where it remained until it was reinstated a species in the early 1990s on the basis of genetic and other differences.[2] When O. albigularis and related species were reclassified into a new genus, Nephelomys, in 2006, it was retained as a separate species, but under the name of Nephelomys levipes.[3]
It is similar to N. keaysi, but smaller, and the fur on the underparts is buffy instead of whitish in the specimens Thomas examined. The interorbital region of the skull is narrow.[4] The incisive foramina, which perforate the palate between the incisors and the molars, are long and narrow. The bony palate is short, with its posterior end often located between the third molars. The alisphenoid strut, an extension of the alisphenoid bone of the skull that separates two foramina (openings) in the skull, is present in some individuals. The mastoid bone usually contains some openings.[6] In the holotype, the head and body length is 130 mm, the tail length is 160 mm, the hindfoot length (without claws) is 31 mm, the ear length is 27 mm, and the skull length is 35.7 mm.[4]
Referencesedit
^ abcZeballos, H. (2016). "Nephelomys levipes". IUCN Red List of Threatened Species. 2016: e.T15604A22332703. doi:10.2305/IUCN.UK.2016-2.RLTS.T15604A22332703.en. Retrieved 17 November 2021.
Hershkovitz, P. 1944. A systematic review of the Neotropical water rats of the genus Nectomys (Cricetinae). Miscellaneous Publications Museum of Zoology, University of Michigan 58: 1–88.
Don E. Wilson (2005). Mammal Species of the World: A Taxonomic and Geographic Reference. ISBN978-0-8018-8221-0.
Thomas, O. 1901. New mammals from Peru and Bolivia, with a list of those collected from the Inambari River, Upper Madre de Dios. Annals and Magazine of Natural History (7)7:178–190.
Weksler, M.; Percequillo, A. R.; Voss, R. S. (2006-10-19). "Ten new genera of oryzomyine rodents (Cricetidae: Sigmodontinae)". American Museum Novitates (3537). American Museum of Natural History: 1–29. doi:10.1206/0003-0082(2006)3537[1:TNGOOR]2.0.CO;2. hdl:2246/5815. S2CID 84088556.
Zeballos, H., Vargas, J. and Weksler, M. 2008. Nephelomys levipes. In IUCN. 2008 IUCN Red List of Threatened Species. Retrieved on April 24, 2009.
April 14, 2024
nephelomys, levipes, also, known, nimble, footed, oryzomys, light, footed, rice, species, rodent, genus, nephelomys, family, cricetidae, found, eastern, slope, andes, from, southeastern, peru, into, west, central, bolivia, cloud, forest, elevations, from, metr. Nephelomys levipes also known as the nimble footed oryzomys 2 or light footed rice rat 1 is a species of rodent in the genus Nephelomys of family Cricetidae 3 It is found on the eastern slope of the Andes from southeastern Peru into west central Bolivia in cloud forest at elevations from 1 800 to 3 200 metres 5 900 to 10 500 ft 1 It occurs in the same general area as its congener N keaysi but at higher altitudes 2 Nephelomys levipesConservation statusLeast Concern IUCN 3 1 1 Scientific classificationDomain EukaryotaKingdom AnimaliaPhylum ChordataClass MammaliaOrder RodentiaFamily CricetidaeSubfamily SigmodontinaeGenus NephelomysSpecies N levipesBinomial nameNephelomys levipes Thomas 1902 SynonymsOryzomys levipes Thomas 1902 Nephelomys levipes Weksler Percequillo and Voss 2006In 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 4 In 1944 Philip Hershkovitz relegated both O levipes and O keaysi to the synonymy of O albigularis 5 where it remained until it was reinstated a species in the early 1990s on the basis of genetic and other differences 2 When O albigularis and related species were reclassified into a new genus Nephelomys in 2006 it was retained as a separate species but under the name of Nephelomys levipes 3 It is similar to N keaysi but smaller and the fur on the underparts is buffy instead of whitish in the specimens Thomas examined The interorbital region of the skull is narrow 4 The incisive foramina which perforate the palate between the incisors and the molars are long and narrow The bony palate is short with its posterior end often located between the third molars The alisphenoid strut an extension of the alisphenoid bone of the skull that separates two foramina openings in the skull is present in some individuals The mastoid bone usually contains some openings 6 In the holotype the head and body length is 130 mm the tail length is 160 mm the hindfoot length without claws is 31 mm the ear length is 27 mm and the skull length is 35 7 mm 4 References edit a b c Zeballos H 2016 Nephelomys levipes IUCN Red List of Threatened Species 2016 e T15604A22332703 doi 10 2305 IUCN UK 2016 2 RLTS T15604A22332703 en Retrieved 17 November 2021 a b c Musser and Carleton 2005 p 1150 a b Weksler et al 2006 p 18 a b c Thomas 1902 p 129 Hershkovitz 1944 p 72 footnote 16 Weksler et al 2006 p 19Literature cited editHershkovitz P 1944 A systematic review of the Neotropical water rats of the genus Nectomys Cricetinae Miscellaneous Publications Museum of Zoology University of Michigan 58 1 88 Don E Wilson 2005 Mammal Species of the World A Taxonomic and Geographic Reference ISBN 978 0 8018 8221 0 Thomas O 1901 New mammals from Peru and Bolivia with a list of those collected from the Inambari River Upper Madre de Dios Annals and Magazine of Natural History 7 7 178 190 Weksler M Percequillo A R Voss R S 2006 10 19 Ten new genera of oryzomyine rodents Cricetidae Sigmodontinae American Museum Novitates 3537 American Museum of Natural History 1 29 doi 10 1206 0003 0082 2006 3537 1 TNGOOR 2 0 CO 2 hdl 2246 5815 S2CID 84088556 Zeballos H Vargas J and Weksler M 2008 Nephelomys levipes In IUCN 2008 IUCN Red List of Threatened Species Retrieved on April 24 2009 Retrieved from https en wikipedia org w index php title Nephelomys levipes amp oldid 1099069157, wikipedia, wiki, book, books, library,
