Eremoryzomys
Eremoryzomys | |
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Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Chordata |
Class: | Mammalia |
Order: | Rodentia |
Family: | Cricetidae |
Subfamily: | Sigmodontinae |
Genus: | Eremoryzomys Weksler, Percequillo, & Voss, 2006 |
Species: | E. polius
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Binomial name | |
Eremoryzomys polius (Osgood, 1913)
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Range in northern Peru[2] | |
Synonyms | |
Eremoryzomys polius, also known as the gray rice rat
A large, long-tailed rice rat, with head and body length of 138 to 164 mm (5.4 to 6.5 in), E. polius has gray fur and short ears. There are well-developed
Taxonomy
The first two specimens of Eremoryzomys polius were collected by
In 2006, Marcelo Weksler published a large-scale
In Weksler's analysis, species placed in Oryzomys did not form a coherent (
Eremoryzomys is now one of about 28 genera[11] in the tribe Oryzomyini, which includes well over a hundred species distributed mainly in South America, including nearby islands such as the Galápagos Islands and some of the Antilles. Oryzomyini is one of several tribes recognized within the subfamily Sigmodontinae, which encompasses hundreds of species found across South America and into southern North America. Sigmodontinae itself is the largest subfamily of the family Cricetidae, other members of which include voles, lemmings, hamsters, and deermice, all mainly from Eurasia and North America.[14]
Description
Eremoryzomys polius is a large, long-tailed rice rat that in color resembles some North American
Skull
In the
The incisive foramina are very long, extending well between the molars. The posterolateral palatal pits are well-developed and recessed into a
In the mandible, the mental foramen, an opening in the mandible just before the first molar, opens to the outside, not upwards as in a few other oryzomyines.[25] The upper and lower masseteric ridges, which anchor some of the chewing muscles, usually join into a single crest at a point below the first molar and do not extend forward beyond the molar.[26] There is no distinct capsular process of the lower incisor, a trait Eremoryzomys shares with only a few other oryzomyines.[27]
Molars
The
Distribution and status
As far as now known, Eremoryzomys polius is confined to a small area in central Peru, at an altitude of 760 to 2,100 m (2,490 to 6,890 ft),
Notes
- ^ Weksler et al., 2006, p. 10; Percequillo et al., 2011, p. 388. Weksler, 2006, table 5, scores Eremoryzomys (as Oryzomys polius) as having overlapping squamosals and maxillaries (see character state definitions for character 30, p. 32).
- ^ Weksler et al., 2006, p. 10. Percequillo et al., 2011, p. 367, write that the fossa does not reach between the molars in Eremoryzomys.
References
- ^ . Retrieved 14 November 2021.
- ^ Pacheco et al., 2008; Musser and Carleton, 2005, p. 1153
- ^ a b c d Osgood, 1913, p. 97
- ^ a b c d e f g h Weksler et al., 2006, p. 10
- ^ a b Musser and Carleton, 2005, p. 1153
- ^ Osgood, 1913, pp. 97–98
- ^ Weksler, 2006, table 2, p. 130; Musser and Carleton, 2005, pp. 1144, 1158
- ^ Weksler, 2006, figs. 34–40
- ^ Weksler, 2006, p. 130
- ^ Weksler, 2006, pp. 75, 77, fig. 42
- ^ a b Weksler et al., 2006, p. 1
- ^ a b c Weksler et al., 2006, p. 11
- ^ Percequillo et al., 2011, p. 372
- ^ Musser and Carleton, 2005
- ^ Weksler, 2006, p. 24
- ^ Weksler, 2006, p. 17, table 5
- ^ Weksler, 2006, table 8
- ^ Steppan, 1995, table 5
- ^ Weksler, 2006, p. 52
- ^ Weksler, 2006, pp. 27–28, table 5
- ^ Weksler, 2006, p. 30
- ^ Weksler, 2006, p. 31
- ^ Weksler, 2006, pp. 38–39; Weksler et al., 2006, p. 10
- ^ Weksler, 2006, p. 40
- ^ Weksler, 2006, p. 41, table 5
- ^ Weksler, 2006, p. 44; Weksler et al., 2006, p. 11
- ^ Weksler, 2006, pp. 41–42; Weksler et al., 2006, p. 11
- ^ Weksler, 2006, pp. 43–44
- ^ Weksler, 2006, p. 43; Weksler et al., 2006, p. 11
- ^ Percequillo et al., 2011, p. 378
- ^ Musser and Carleton, 2005, p. 1153; Pacheco et al., 2008
- ^ Percequillo et al., 2011, p. 379
Literature cited
- OCLC 62265494.
- Osgood, W.H. 1913. New Peruvian mammals. Field Museum of Natural History, Zoölogical Series 10:93–100.
- Pacheco, V.; Zeballos, H.; Vivar, E.; Weksler, M. (2008). "Eremoryzomys polius". .
- Percequillo, Alexandre R.; Weksler, Marcelo; Costa, Leonora P. (February 2011). "A new genus and species of rodent from the Brazilian Atlantic Forest (Rodentia: Cricetidae: Sigmodontinae: Oryzomyini), with comments on oryzomyine biogeography". Zoological Journal of the Linnean Society. 161 (2): 357–390. ISSN 1096-3642.
- Weksler, M. 2006. Phylogenetic relationships of oryzomyine rodents (Muroidea: Sigmodontinae): separate and combined analyses of morphological and molecular data. Bulletin of the American Museum of Natural History 296:1–149.
- Weksler, M., Percequillo, A.R. and Voss, R.S. 2006. Ten new genera of oryzomyine rodents (Cricetidae: Sigmodontinae). American Museum Novitates 3537:1–29.