Callosciurus adamsi (Kloss, 1921)
Ear-Spot Squirrel
description: The ear-spot squirrel has dull red underparts
(the hairs are gray with reddish tips), a lateral white stripe
with a dark stripe above it, and a buff y patch behind each
ear that distinguishes it from the slightly larger plantain
squirrel (C. notatus).
size: Female—HB 170.3 mm (n = 4); T 148.7 mm (n = 3); Mass
150.0 g (n = 1).
Male—HB 157.0 mm (n = 1); T 158.0 mm (n = 1).
Sex not stated—HB 167.3 mm (n = 4); T 159.5 mm (n = 2);
Mass 134.5 g (n = 2).
distribution: This species is present on the island of Bor-
neo: in the lowlands and hills of Sabah and Sarawak (Malay-
sia) and Brunei Darussalam—below the altitudinal range of
C. orestes—but it is also found at elevations of up to 900 m in
the Kelabit Highlands of Sarawak (Malaysia).
geographic variation: None.
conservation: IUCN status—vulnerable. Population
trend—decreasing.
habitat: This squirrel is found mostly in small trees in dip-
terocarp forests.
Subfamily Callosciurinae Pocock, 1923
This subfamily includes 14 genera.
Callosciurus Gray, 1867
Callosciurus means “beautiful squirrel,” and some of the 14
species in this genus match that epithet. They constitute the
unstriped tree squirrels of Southeast Asia. The members of
this genus are commonly omnivorous, feeding mainly on
vegetable matter but probably eating animal material when-
ever it is available.
Callosciurus adamsi. Photo courtesy A. Coke Smith, http://www.coke
smithphototravel.com.