Order Rodentia - Family Sciuridae Author Robert S. Hoffmann Author Charles G. Anderson text 1993 Smithsonian Institution Press Washington and London Editor Don E. Wilson Editor DeeAnn M. Reeder Mammal Species of the World (2 nd Edition) 419 465 book chapter http://doi.org/10.5281/zenodo.7353130 1-56098-217-9 7353130 Microsciurus flaviventer (Gray, 1867) . Ann. Mag. Nat. Hist., ser. 3, 20:432 . TYPE LOCALITY: Brazil . Cabrera (1961) suggested the type locality could be restricted to Pebas, based on Thomas (1928b) . DISTRIBUTION: Amazon basin of Colombia , Ecuador , Peru , and Brazil west of the Rios Negro and Jurua. SYNONYMS: avunculus Thomas, 1914; brevirostris; florenciae J. A. Allen, 1914; manarius Thomas, 1920; napi (Thomas, 1900); otinus (Thomas, 1901); peruanus (J. A. Allen, 1897); rubicollis Thomas, 1914 (lapsus for rubrirostris); rubrirostris J. A. Allen, 1914; sabanillae Anthony, 1922; similis (Nelson, 1899); simonsi (Thomas, 1900); vivatus Goldman, 1912.