The latter characterizes some samples from the central core of Sulawesi but additionally a couple of samples from the northeastern peninsula; paler venters predominate in samples museum bangka belitung obtained from terrain between these regions. A gradation from grayish buff to ochraceous grey may even be discovered inside a single population sample. While of potential interest to studies involving coat-color variation, we can not resolve the chromatic differences we see into geographic patterns which may reflect populations with distinct genetic histories. Collection localities for samples of Hyosciurus heinrichi and H. Numbers key to localities described in the gazetteer the place specimens are also identified by museum initials and catalog numbers.
Fig 51
Finding none, or just a few of those species within the east-central peninsula would definitely strengthen the position of the west-central area as an area of significant endemism in the evolutionary historical past of Sulawesi’s mammals. Of the ten species of squirrels, eight is every a host to a novel species of sucking lice in Hoplopleura. The lice comprise a monophyletic group relative to species of Hoplopleura parasitizing non-Sulawesi Indomalayan squirrels and endemic Sulawesi murid rodents (fig. 59). Their unique lineage mirrors that of the three genera of squirrels, which are monophyletic relative to other Indomalayan genera within the Nannosciurinae, one of many three subfamilies constituting Sciuridae. Paratergal plates (fig. 57C) as in male however with both apical setae on plates V and VI of intermediate length and with setae on plate VII shorter than in male. Maximum parsimony majority rule consensus tree showing phylogenetic relationships among species of Hoplopleura from rodent hosts primarily based on forty three morphological characters.
Table 6
They are differing very strikingly from our Bumbulan specimen. Both forms have the identical fulvous underside, arms and palms, legs and feet. But in the Bumbulan specimen the color of the upperside is a mix of black and fulvous-buff, in the Palopo series a mixture of brownish and buff. The reason why I do not separate the Palopo sequence, is, that it consists of old specimens (perhaps discoloured ?), whereas the Bumbulan specimen is from formaline. We introduce the genera and species of endemic squirrels right here by displaying their phylogenetic place inside the current classification of the Sciuridae as outlined by Thorington and Hoffmann (2005).
Table 31
Another squirrel, P. leucomus, and several different native Sulawesi mammals are recorded from Pulau Lembeh (see the account of P. leucomus), but samples of solely P. murinus and the macaque, Macaca nigra, come from Pulau Talisei. That island is separated from the mainland by two smaller islands and water depths of lower than 50 m, largely solely 10 m (Sheet NA 51-12). As with Pulau Lembeh, Talisei was more than likely part of mainland Sulawesi throughout Pleistocene glacial intervals when sea degree was depressed by at least one hundred twenty m, and separated throughout warm inter-glacial durations (see the account of P. leucomus). Neither squirrel nor macaque displays any vital morphological contrasts with mainland samples, suggesting relatively current isolation on Pulau Talisei. Modern specimens of the small-bodied P. murinus have been collected on the flanks of Gunung Lompobatang on the tip of the southwestern peninsula (see gazetteer and fig. 30). The squirrel probably inhabited lowland forest within the Maros region earlier than the landscape was reworked from forest to agricultural plains and may have been sympatric with Prosciurillus sp.
A year later, on one other April morning, Musser watched a person for 10–15 minutes in a special space of forest on the summit of Nokilalaki. He stood about 10 ft from the squirrel, which was sitting on a rotting tree trunk coated with thick moss. From a distance, the squirrel resembled a round, darkish brown ball of fur with a protracted face and large eyes. At first it responded to Musser’s presence by leaping to the bottom and scampering away for a few ft, however then returned to the top of the trunk to sit down, sometimes grooming and biting ectoparasite-infested areas, scratching at other locations in its fur, and typically chirping and sniffing about on the tree trunk.
Specimens from Kuala Navusu and Sungai Tolewonu collected by Musser (in AMNH), the pattern from Pinedapa obtained by H.C. Raven (in USNM), and the squirrels collected from the southeastern peninsula by G. Anderson’s shade plate of alstoni (see fig. 16), apart from the underparts that appear light, rendered orange rather than “dusky chestnut,” reveals the same diagnostic pelage highlights described by him. The magnitudes of cranial and dental dimensions measured in our samples are similar (table 19).
Hoplopleura topapuensis is understood only from Prosciurillus topapuensis, which is restricted to center elevations and mountains within the central core of Sulawesi (see fig. eleven and table 4). It has been collected from squirrels trapped at elevations between 1000 m and 1463 m. In addition to the holotype female, two extra feminine specimens, one from the same host (USNM ) as the holotype, the opposite ex male Prosciurillus leucomus (AMNH ) collected by G. Heinrich at 900 m at Rurukan (01°21′N, 124°52′E; see gazetteer and fig. 11), Propensi Sulawesi Utara, Indonesia on 22 January 1931. In spite of the big variety of named forms, geographical variation is slight compared with that in most different widespread species of Callosciurus. The dorsal pelage and tail are very uniform with only slightly native darkening, and most variation concerns the colour of the ventral pelage (pale gray to dark chestnut), the clarity of the lateral darkish and light-weight stripes, and the extent, or absence, of reddish brown hairs in the tail-tip.
