Fulvous Colilargo – Oligoryzomys fulvescens

Oligoryzomys fulvescensSaussure, 1860

Accepted name, Mammal Species of the World 2005

All Middle American forms retained as subspecies by some (see Hall, 1981; Jones and Engstrom, 1986). Morphometric variation among Middle American forms evaluated by Carleton and Musser (1995) and their morphology contrasted with O. vegetus. Reported karyotypic variation intimates that more than one species occurs among the listed synonyms (Andrades-Miranda et al., 2001a; Gardner and Patton, 1976; Haiduk et al., 1979), whose status, particularly the South American taxa provisionally associated by Carleton and Musser (1995), warrants additional study. Linares (1998), e.g., recognized all Venezuelan populations (except O. griseolus) as O. fulvescens; whereas, Andrades-Miranda et al. (2001a) listed specimens from Roraima, Brazil, as O. cf. messorius, a form described from Guyana; and see Voss et al. (2001) for another regional perspective regarding discrimination and specific assignment of Guianan samples vis a vis lowla... [truncated]

• Wilson, D and Reeder, D. (eds.) 2005. Mammal Species of the World. A Taxonomic and Geographic Reference. 3rd ed. -- 2142 pp. Johns Hopkins University Press.