conservation.arizona.edu - South America

Jessen, R. R., R. N. Gwinn, and J. L. K0prowski. 2013. Sciurillus pusillus (Rodentia: Sciuridae). Mammalian Species 49:75-79.

thackerk1 — Mon, 22 Jul 2019 18:52:32 +0000

Authors

Rosa R. Jessen

R. Nathan Gwinn

John L. Koprowski

Sciurillus pusillus (E. Geoffroy Saint-Hilaire, 1803) is a sciurid commonly called the Neotropical pygmy squirrel. S. pusillus is an exceptionally small species of tree squirrel that appears pale gray due to a grizzled pattern of light hair tips on the dorsal pelage. Ranging from Amazonian Peru and Brazil northeast to the Guianas with a patchy distribution, S. pusillus is a denizen of the upper canopy of lowland rain forest. This species is listed as ‘‘Data Deficient’’ by the International Union for Conservation of Nature and Natural Resources.

Additional Information

Sciurillus pusillus (Rodentia: Sciuridae)

Date of publication:

2013

Topics

pygmy squirrel

lowland rain forest

South America

Neotropics

Microsciurus flaviventer (Rodentia: Sciuridae)

thackerk1 — Mon, 22 Jul 2019 18:47:54 +0000

Authors

Timothy G. Jessen

Allyssa l. Kilanowski

R. Nathan Gwinn

Melissa J. Merrick

John L. Koprowski

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.

Additional Information

Mammalian Species 48:59-65

Date of publication:

2016

Topics

Amazon dwarf squirrel

Neotropical tree squirrel

geographical range

lowland tropical rainforest

South America

Research Categories

Natural History

Microsciurus santanderensis (Rodentia: Sciuridae)

thackerk1 — Thu, 27 Jun 2019 23:35:15 +0000

Authors

Sarah L. Hale

Vicki L. Greer

John L. Koprowski

Nicolás ramos-Lara

Microsciurus santanderensis (Hernández-Camacho, 1957) is a sciurid commonly called the Santander dwarf squirrel. M. santanderensis is a small tree squirrel with orange and black mixed fur and is 1 of 4 species in the genus Microsciurus. Endemic to Colombia, South America, in forests at elevations up to 3,800 m, M. santanderensis is listed as “Data Deficient” by the International Union for Conservation of Nature and Natural Resources, and more research is needed to determine its conservation needs.

Additional Information

Microsciurus santanderensis (Rodentia: Sciuridae)

Date of publication:

2018

Topics

Santander dwarf squirrel

South America

endemic

rodent

Colombia

data deficient

Research Categories

Natural History Threatened and Endangered Species

Gwinn, R. N., J. L. Koprowski, Jessen, R., and M. Merrick. 2012. Sciurus spadiceus (Rodentia: Sciuridae). Mammalian Species 44:59-63.

thackerk1 — Thu, 27 Jun 2019 23:04:22 +0000

Authors

R. Nathan Gwinn

John L. Koprowski

Rosa R. Jessen

Melissa J. Merrick

Sciurus spadiceus Olfers, 1818, is a sciurid commonly known as the southern Amazon red squirrel. S. spadiceus is a large-bodied tree squirrel with a variable color pattern, but typically has a reddish brown dorsum, a dark midline, a white venter, and a brown and orange tail. S. spadiceus ranges from southern Colombia and Venezuela, south through Peru, western Brazil, Ecuador, and Bolivia in lowland rain forest. This species is listed as “Least Concern” by the International Union for Conservation of Nature and Natural Resources.

Additional Information

Sciurus spadiceus (Rodentia: Sciuridae)

Date of publication:

2012

Topics

southern Amazon red squirrel

lowland rain forest

South America