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SPECIES Sigmodon (Sigmodon) hirsutus

Author:Burmeister, 1854.
Citation:Abhandlungen Naturforschender Gesellschaft Halle, Sitzungberichte, 2: 16.
Common Name:Southern Cotton Rat
Type Locality:Venezuela, Zulia State, Maracaibo.
Distribution:Nicaragua to C Panamá, Central America; in South America to N Colombia and N Venezuela (see Linares, 1998:Fig. 171); northern limits uncertain.
Comments:Subgenus Sigmodon, S. hispidus species group. Central and South American taxa included as subspecies of S. hispidus (Cabrera, 1961; Hall and Kelson, 1959), observing the polytypic species template handed down from Bailey (1902). Genetic separation, inferred from cytochrome b sequence data, of southern populations revealed by Peppers and Bradley (2000), who reinstated hirsutus as species; sister species to S. alleni based on those data (and Peppers et al., 2002). Among the species-group synonyms, the South American taxa bogotenis and sanctaemartae, which have yet to be surveyed genetically, warrant additional attention; Gyldenstolpe (1932) and Ellerman (1941) listed both as species.
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Offspring:

Synonyms:

    austerulus Bangs, 1902
    bogotensis J. A. Allen, 1897
    borucae J. A. Allen, 1897
    chiriquensis J. A. Allen, 1904
    griseus J. A. Allen, 1908
    sanctaemartae Bangs, 1898

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