Callosciurus nigrovittatus
Creators: name: Wilson, Don E.
name: Thomas E. Lacher, Jr
name: Mittermeier, Russell A.
Publisher: name: Zenodo
Year: 2016
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Rodentia
Sciuridae
Callosciurus
Callosciurus nigrovittatus

description: 66. Black-striped Squirrel <i>Callosciurus nigrovittatus</i> <b>French:</b> Ecureuil a bandes noires / <b>German:</b> Schwarzstreifen-Schonhérnchen / <b>Spanish:</b> Ardilla de rayas negras <b>Taxonomy.</b> Sciurus nigrovittatus Horsfield, 1823, “The island ofJava.” Restricted by J. C. Moore and G. H. H. Tate in 1965 and C. B. Kloss 1921 to west Java, (Indonesia). Four subspecies are recognized. <b>Subspecies and Distribution.</b> C.n.migrovittatusHorsfield,1823—Java. C.n.bilimitatusMiller,1903—MalayPeninsulaandTiomanI(offEMalaysia). C.n.bockiRobinson&amp;Wroughton,1911—Sumatra. C. n. klossi Miller, 1900 — Saddle I, Tambelan Archipelago (off W of Borneo). <b>Descriptive notes.</b> Head-body 184-199 mm,tail 159-182 mm; weight 202-239 g. The Black=striped Squirrel is a gray-bellied squirrel, with a buff stripe superimposed on a black stripe along each flank, a grizzled black and buffy dorsum, shoulders that are more buffy than dorsum, and brown on throat. Nominate subspecies nigrovittatus has an obscure buff lateral line, whereas subspecies bilimitatus has a sharply delineated buff line. Subspecies bocki has a bright and clearly delineated buff lateral line, and some individuals have a pale patch behind ear. Subspecies klossi is “blue-bellied,” similar to the Borneo Black-banded Squirrel (C. orestes), but it is not as brightly colored and lacks a pale patch behind ear. <b>Habitat.</b> Canopy and undercanopy of primary and secondary forests. In Malaysia, the Black-striped Squirrel is approximately twice as common in disturbed areas as in places that are less disturbed by humans. <b>Food and Feeding.</b> The diet of the Black-striped Squirrel includes fruits and insects, which were a significant proportion of diet. <b>Breeding.</b> From 1948 to 1952 in the Ulu Gombak Forest Reserve, pregnant Blackstriped Squirrel females were recorded in every month, most frequently in April-June (20%) and least often in October—December (8%). Litter size was 1-4, with a mean of 2-2 young (n = 23 litters). <b>Activity patterns.</b> The Black-striped Squirrel is diurnal and arboreal, although details on its specific activity patterns are unknown. The leaf-nest is similar to that of the Graybellied Squirrel (C. caniceps), with an outer layer of twigs or coarse leaves and an inner layer of shredded materials. <b>Movements, Home range and Social organization.</b> At Krau Wildlife Reserve (Pahang, Malaysia), estimated population density of the Black-striped Squirrel is 5 ind/100 ha. In Ulu Gombak Forest Reserve (Selangor, Malaysia), a single female had a home range estimated, in two different ways, to be 1-4 ha or 2 ha. In Ulu Gombak Forest Reserve, it reacts to terrestrial predators with a repeated staccato bark and tail flicking, which causes conspecific squirrels to run up a tree and be silent. The Black-striped Squirrel responds to an aerial predator with a soft “chuckle” if not immediately threatened, and with a “rattle” soundif it is a close encounter. Nearby squirrels react by freezing in position, and perhaps byjoining in the rattle call. In response to snakes,it give a squeak call, which causes other squirrels, sometimes ofthree different species, to join in mobbing the snake. <b>Status and Conservation.</b> Classified as Near Threatened on The IUCN Red List. The Black-striped Squirrel is threatened by continued habitat degradation across its range. <b>Bibliography.</b> Corbet &amp; Hill (1992), Duckworth, Lee &amp; Tizard (2008a), Kloss (1921), Lekagul &amp; McNeely (1977), Lundahl &amp; Olsson (2002), Medway (1969), Miller (1900, 1903, 1942), Moore &amp; Tate (1965), Oshida, Yasuda et al. (2001), Payne (1980), Robinson &amp; Wroughton (1911), Saiful &amp; Nordin (2004), Saiful et al. (2001), Tamura &amp; Yong Hoisen (1993), Thorington et al. (2012).
description: Published as part of <i>Don E. Wilson, Thomas E. Lacher, Jr &amp; Russell A. Mittermeier, 2016, Sciuridae, pp. 648-837 in Handbook of the Mammals of the World – Volume 6 Lagomorphs and Rodents I, Barcelona :Lynx Edicions</i> on pages 735-736, DOI: 10.5281/zenodo.6840226