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

SPECIES Phyllotis xanthopygus

Author:Waterhouse, 1837.
Citation:Proc. Zool. Soc. Lond., 1837: 28.
Common Name:Yellow-rumped Pericote
Type Locality:Argentina, Santa Cruz Prov., coast of Santa Cruz.
Distribution:WC Perú, in and along the Andes to Santa Cruz Prov., S Argentina, and adjacent Magallanes Prov., S Chile; latitudinal (15-51ºS) and altitudinal ranges (sea level-5600 m) exceptional as currently defined (see Kramer et al., 1999:Fig. 3, for extent of geographic races).
Status:IUCN – Lower Risk (lc).
Comments:Viewed as a geographic race of P. darwini by Pearson (1958), Cabrera (1961), and Hershkovitz (1962). Morphometric, electrophoretic, karyotypic, and molecular differentiation supports the specific recognition of P. xanthopygus (Spotorno and Walker, 1983; Steppan, 1998; Walker et al., 1984); genetic diversity among and within isolated Patagonian demes examined by Kim et al. (1998), who postulated the early Pleistocene origin of haplotype lineages and highlighted the vicariant influence of the Río Chubut. Steppan (1998) noted the need for continued systematic examination of the populations now assigned to the highly variable xanthopygus: e.g., chilensis is sometimes treated as a species (Anderson, 1997); rupestris and vaccarum (Spotorno et al., 2001) appear distinct from xanthopygus in phylogenetic analysis of abbreviated cytochrome b sequences (Spotorno et al., 2001); xanthopygus paraphyletic with respect to P. limatus in broader molecular survey of nominal subspecies (Kuch et al., 2002). See Kramer et al. (1999, Mammalian Species, 617).



    abrocodon Thomas, 1926
    arenarius Thomas, 1902
    capito (Philippi, 1860)
    chilensis Mann, 1945
    glirinus (Philippi, 1896)
    lanatus (Philippi, 1896)
    oreigenus Cabrera, 1926
    posticalis Thomas, 1912
    ricardulus Thomas, 1919
    rupestris (Gervais, 1841)
    vaccarum Thomas, 1912
    wolffhuegeli Mann, 1944

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