186 Sundasciurus hoogstraali
size: Female—HB 202.0 mm; T 165.4 mm.
Male—HB 203.5 mm; T 160.5 mm.
Sex not stated—HB 204.8 mm; T 176.0 mm.
distribution: This squirrel is named for the island on
which it is found, Busuanga Island (Philippines).
geographic variation: None.
conservation: IUCN status—least concern. Population
trend—no information.
habitat: The Busuanga squirrel is found in primary and
secondary lowland forests.
natural history: No information is available.
general references: Heaney, Balete, et al. 1998.
Sundasciurus jentinki (Thomas, 1887)
Jentink’s Squirrel
description: The upperparts are rather pale, speckled
brownish or creamy white, and have gray underfur. Jen-
tink’s squirrel has a distinctive creamy white “mustache,”
eye ring, and border to the ears. The tail is very thin, ap-
pearing banded dark and pale due to reddish, black, and
white bands on the hairs.
size: Female—HB 126.6 mm; T 112.6 mm; Mass 55.0 g.
Male—HB 130.6 mm; T 125.2 mm; Mass 60.0 g.
Sex not stated—HB 131.1 mm; T 118.1 mm.
distribution: This species is found in the northern part of
the island of Borneo (in the mountains of Sabah and Sar-
awak [Malaysia] and Kalimantan [Indonesia]), at elevations
above 900 m.
geographic variation: Two subspecies are recognized.
S. j. jentinki—Mount Kinabalu (900–3140 m), the Crocker
Range, and Gunung (= Mount) Trus Madi in Sabah (Ma-
laysia), as well as in the Sabah-Sarawak border hills, the
Sundasciurus hoogstraali. Photo courtesy Rey Sta. Ana.