HOME --> CLASS MAMMALIA
--> ORDER RODENTIA
--> SUBORDER MYOMORPHA
--> SUPERFAMILY Muroidea
--> FAMILY Cricetidae
--> SUBFAMILY Sigmodontinae
--> GENUS Oligoryzomys
SPECIES Oligoryzomys microtis
Author: | J. A. Allen, 1916. | Citation: | Bull. Am. Mus. Nat. Hist., 35: 525. | Common Name: | Small-eared Colilargo | Type Locality: | Brazil, Amazonas State, north bank of lower Rio Solimões, 70 km WSW Manaus, Manacaparú (as restricted by Voss et al., 2001:118-119). | Distribution: | Amazon Basin of Brazil and contiguous lowlands of Perú, Bolivia, and Paraguay. | Status: | IUCN – Lower Risk (lc). | Comments: | Karyotype reported by Gardner and Patton (1976) as Oryzomys longicaudatus variant (2) for Peruvian sample; slightly different diploid and fundamental numbers documented for specimens from Amapá, Brazil (Andrades-Miranda et al., 2001a). Gene sequence analyses indicate that O. microtis and O. fornesi represent separate species groups (Myers et al., 1995), not populations of a single species (Carleton and Musser, 1989; Olds and Anderson, 1987). With removal of fornesi from synonymy and fixation of the type locality, specific definition and distributional limits require amendment; also see Voss et al. (2001) for comparisons with O. fulvescens and comments on taxonomy. |
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| Offspring: | Synonyms:
chaparensis (Osgood, 1916) mattogrossae (J. A. Allen, 1916)
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