It is regarded variously as a species,[3][4] or as a subspecies of the Brazilian Squirrel Sciurus aestuans[5] or Sciurus (Guerlinguetus) brasiliensis.[1]
It is solitary and territorial, but has been seen to act together and mob a predatory cat, the margay.[6]
^ abBordignon, M.; Monteiro-Filho, E. L. A. (2000). "Behaviour and daily activity of the squirrel Sciurus ingrami in a secondary araucaria forest in southern Brazil". Canadian Journal of Zoology. 78 (10): 1732–1739. doi:10.1139/z00-104.
^Paschoal, M.; Galetti, M. (1995). "Seasonal food use by the neotropical squirrel Sciurus ingrami in Southeastern Brazil". Biotropica. 27 (2): 268–273. doi:10.2307/2389006. JSTOR2389006.
^Alberto Solórzano-Filho, J. (2006). "Mobbing of Leopardus wiedii while hunting by a group of Sciurus ingrami in an Araucaria forest of Southeast Brazil / Assaillir du Leopardus wiedii tandis que chasse par un groupe de Sciurus ingrami dans une forêt d'Araucaria de sud-ouest au Brésil". Mammalia. 70 (1–2): 156–157. doi:10.1515/MAMM.2006.031.