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HOME --> CLASS MAMMALIA  --> ORDER RODENTIA  --> SUBORDER MYOMORPHA  --> SUPERFAMILY Muroidea  --> FAMILY Cricetidae  --> SUBFAMILY Sigmodontinae  --> GENUS Sigmodon  --> SUBGENUS Sigmodon

SPECIES Sigmodon (Sigmodon) ochrognathus

Author:Bailey, 1902.
Citation:Proc. Biol. Soc. Wash., 15: 115.
Common Name:Yellow-nosed Cotton Rat
Type Locality:USA, Texas, Brewster Co., Chisos Mountains, 8000 ft (2438 m).
Distribution:SE Arizona, extreme SW New Mexico, and Transpecos, Texas, USA, south to C Durango, México; northern outlier population may persist in Guadalupe Mtns, Transpecos, Texas (see Stangl and Dalquest, 1991).
Status:IUCN – Lower Risk (lc).
Comments:Subgenus Sigmodon, S. hispidus species group. Basal clade within the S. hispidus assemblage according to phylogenetic interpretations of cytochrome b data (Peppers et al., 2002), not with S. fulviventer and kin (Baker, 1969). Findley and Jones (1960) detected no consistent pattern of size and pelage color variation to justify recognition of subspecies, a conclusion sustained by the low genetic distances recorded among populations (Carroll et al., 2002). See Baker and Shump (1978, Mammalian Species, 97).



    baileyi J. A. Allen, 1903
    madrensis Goldman and M. C. Gardner, 1947
    montanus Benson, 1940

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