Sigmodon Say and Ord, 1825

Guy G. Musser & Michael D. Carleton, 1993, Order Rodentia - Family Muridae, Mammal Species of the World (2 nd Edition), Washington and London: Smithsonian Institution Press, pp. 501-755 : 746

Sigmodon Say and Ord, 1825 . J. Acad. Nat. Sci. Philadelphia, 4(2):352.

TYPE SPECIES: Sigmodon hispidus Say and Ord, 1825 .

SYNONYMS: Deilemys , Lasiomys, Sigmomys .

COMMENTS: North American forms revised by Bailey (1902), with subsequent partial revisions by Baker (1969), Voss (1992), and Zimmerman (1970); further alphataxonomic study dearly needed. Standard karyology summarized by Zimmerman (1970), banded karyotypes by Elder (1980) and Elder and Lee (1985), albumin differentiation by Fuller et al. (1984). Skin-skull morphology ( Bailey, 1902; Baker, 1969) and karyology ( Elder and Lee, 1985; Zimmerman, 1970) have yielded conflicting pictures of species-group associations. Sigmomys , type species Sigmodon alstoni , variously treated as a distinct genus ( Handley, 1976), a subgenus of Sigmodon ( Husson, 1978) , or a full synonym (Cabrera, 1961). Hershkovitz (1955a) arrayed Sigmodon with Holochilus , Neotomys , and Reithrodon as the sigmodont group, but other evidence has questioned the close affinity of each to Sigmodon (see those generic accounts).