Saimiri ustus I. Geoffroy 1843

Wilson, Don E. & Reeder, DeeAnn, 2005, Order Primates, Mammal Species of the World: a Taxonomic and Geographic Reference (3 rd Edition), Volume 1, Baltimore: The Johns Hopkins University Press, pp. 111-184 : 139

Saimiri ustus I. Geoffroy 1843

Saimiri ustus I. Geoffroy 1843 , C. R. Acad. Sci. Paris, 16 (21): 1157.

Type Locality: Brazil, Amazonas, Rio Madeira, Humaitu.

Vernacular Names: Bare-eared Squirrel Monkey.

Synonyms: Saimiri madeirae Thomas 1908 .

Distribution: S Brazil: south of Rio Amazon, probably from Rio Xingu to Lage Tefé, approx. 61°30’W.

Conservation: CITES – Appendix II; IUCN – Least Concern.

Discussion: S. sciureus species group. Thorington (1985) and Costello et al. (1993) argued that ustus is a synonym of S. sciureus (so that the correct name should be madeirae ), but this is not the case ( Groves, 2001 c:159). Costello et al. (1993) regarded this species as not specifically distinct from S. sciureus .