Timothy G. Jessen, Allyssa L. Kilanowski, R. Nathan Gwinn, Melissa J. Merrick, John L. Koprowski
Mammalian Species 48 (935), 59-65, (25 August 2016) https://doi.org/10.1093/mspecies/sew006
KEYWORDS: Amazon Basin, Amazon dwarf squirrel, Bolivia, Brazil, Colombia, Ecuador, Lowland rainforest, Peru
Microsciurus flaviventer (Gray, 1867) is a Neotropical tree squirrel commonly known as the Amazon dwarf squirrel. Small bodied with dark brown dorsal pelage contrasted with a gray or yellowish gray venter, and a faintly banded tail. M. flaviventer is 1 of 4 species in the genus Microsciurus. The geographic range of M. flaviventer extends from the Amazon basin of South America throughout western and southeastern Colombia, Ecuador, southern Peru, Brazil west of Río Negro, and Madeira. It is most commonly associated with evergreen lowland tropical rainforest. Status of M. flaviventer is “Data Deficient” under the International Union for Conservation of Nature and Natural Resources Red List of Threatened Species; however, loss of habitat is a major concern.