Oligoryzomys eliurus (Wagner 1845)

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 : 1141

Oligoryzomys eliurus (Wagner 1845)

[Oligoryzomys] eliurus (Wagner 1845) , Arch. Naturgesch., 11: 147.

Type Locality: Brazil, São Paulo State, Ytararé.

Vernacular Names: Brazilian Colilargo.

Synonyms: Oligoryzomys pygmaeus (Wagner 1845) ; Oligoryzomys utiaritensis (J. A. Allen 1916) .

Distribution: C and SE Brazil; range limits uncertain.

Conservation: IUCN – Lower Risk (lc).

Discussion: Suggested as conspecific with O. nigripes (see Myers and Carleton, 1981); also see comments under O. delticola . Diploid number (2n = 62) reported as the same as O. nigripes but with lower fundamental numbers ( FN = 64-66 versus 78-82), based on specimens from Goías, C Brazil, where the two species were recorded in sympatry ( Andrades-Miranda et al., 2001 a). This karyotype resembles that earlier reported by Bonvicino and Weksler (1998) as O. fornesi from Goías, also there recorded in sympatry with O. nigripes . The latter authors instead attributed a high-FN karyotype from São Paulo (as reported by Yonenaga et al., 1976) to O. eliurus . Reconciliation of these apparent discrepancies is needed as are vouchered documentation of the species’ distributional limits and its clear morphological discrimination from O. nigripes .