Mammal Species of the World Logo


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

SPECIES Oligoryzomys fornesi

Author:Massoia, 1973.
Citation:Rev. Invest. Agropec. Ser. 1, Biol. Prod. Anim., 10: 22.
Common Name:Fornes’ Colilargo
Type Locality:Argentina, Formosa Prov., Naineck.
Distribution:NE Argentina, E Paraguay, and SC Brazil (Goiás to Paraíba; Bonvicino and Weksler, 1998).
Comments:Viewed as a synonym of O. microtis (Carleton and Musser, 1989; Olds and Anderson, 1987), an assignment contradicted by morphometric (Bonvicino and Weksler, 1998) and cytochrome b (Myers et al., 1995) data. Bonvicino and Weksler (1998) recorded the species as present in Brazil, but Andrades-Miranda et al. (2001a) did not. Bonvicino and Weksler (1998) reidentified certain Paraguayan specimens reported as O. fornesi by Myers and Carleton (1981) as O. flavescens based on possession of lower diploid (62) and fundamental (64) numbers and certain cranial shape differences. Myers and Carleton interpreted these minor chromosome differences as populational variation (2n = 62-66, FN = 64-68), nor can we readily grasp the purported shape differences from Bonvicino and Weksler’s principle component results. Also see comments on O. flavescens.



  Bucknell Home Page   Biology Department Home Page


©Bucknell Univesity All Rights Reserved
Comments and questions to