Onychomys Baird 1857

Wilson, Don E. & Reeder, DeeAnn, 2005, Order Rodentia - Family Cricetidae, Mammal Species of the World: a Taxonomic and Geographic Reference (3 rd Edition), Volume 2, Baltimore: The Johns Hopkins University Press, pp. 955-1189 : 1060

Onychomys Baird 1857

Onychomys Baird 1857 , Mammalia, in: Repts. U. S. Expl. Surv., Vol. 8, 1: 458.

Type Species: Hypudaeus leucogaster Wied-Neuwied 1841

Species and subspecies: 3 species:

Species Onychomys arenicola Mearns 1896

Species Onychomys leucogaster (Wied-Neuwied 1841)

Species Onychomys torridus Coues 1874

Discussion: Reithrodontomyini. While Vorontsov (1959) arranged Onychomys as sole member of its own tribe, apart from Reithrodontomyini, a robust body of data now supports its close phyletic affinity with Peromyscus and related genera ( Allard and Honeycutt, 1991; Carleton, 1980; Hooper and Musser, 1964 b; Stangl and Baker, 1984 b; Sullivan et al., 1995), in particular Osgoodomys ( Engel et al., 1998) , and recommends the synonymy of these two family-group taxa (Reithrodontomyini having line priority).

Revised by Hollister (1914), with later regional reviews by Engstrom and J. Choate (1979), Riddle and J. Choate (1986), and Van Cura and Hoffmeister (1966). Status of fossil forms (early Pliocene-Holocene) and affinity with living species evaluated by Carleton and Eshelman (1979). Chromosomal evolution among three species investigated by Baker et al. (1979), allozymic differentiation by Sullivan et al. (1986), and molecular relationships by Allard and Honeycutt (1991), Riddle and Honeycutt (1990), and Sullivan et al. (1995). Historical biogeography considered by Riddle and Honeycutt (1990) and Riddle (1995).