Clara Stefen (SNSD) checked all kind specimens, provided measurements, despatched us shade pictures of varieties, and scoured through the files at Dresden for answers to our museum bali queries. Earlier, Alfred Feiler (SNSD) had kindly loaned us samples of Prosciurillus rosenbergii. Paula Jenkins (BMNH) arranged for Sulawesi squirrel pelts to be examined for ectoparasites, measured sort specimens as well as samples of Prosciurillus topapuensis and Hyosciurus heinrichi collected by W.J.C. Frost, searched through the literature to assist us locate collection websites, and offered many other bits of helpful data. Michael Carleton (USNM) organized for Durden to survey research skins for ectoparasites and measure specimens, checked Musser’s measurement values for some specimens, and illuminated a variety of the arcane (in Musser’s view) procedures attending production of principle-components evaluation. Loïc Costeur (NMB) measured types for us, sent shade pictures of all types, and supplied other data concerning the assortment of Sulawesi squirrels at Basel. Gerhard Storch (SMF) sent measurements for the holotype of “Sciurus elbertae” and provided different related data.

Fig Fifty Four

Many species of fig kind elements of the forest habitats inside the altitudinal range of the squirrel. Several species are restricted to the understory, especially along banks of streams where ripe figs fall from the bushes and litter the ground. Fruiting tall canopy and emergent species of strangler and different figs attract birds, cover tree squirrels (Prosciurillus), and macaques during the day and fruit bats (Pteropidae) at night. The fruits not eaten within the crown of the tree eventually drop to the ground the place they’re accessible to Rubrisciurus, nocturnal rats, and different terrestrial mammals. Subsequent classifications printed after 1940 ranged from the novel to the acceptable. Zahn (1942) proposed drastic modifications in classification, all of which have been refuted by later researchers.

Fig Forty Five

The holotype of Hyosciurus ileile is a young grownup feminine (AMNH ) collected by Gerd Heinrich (collector quantity 130) on November 21, 1930. A stuffed museum examine skin and accompanying skull comprise the holotype. The pores and skin is unbroken, as is the cranium with mandibles; all enamel are current. Opening acorns, a tricky woody fruit, requires strong incisors along with forceful contributions from masseter and temporal muscular tissues, and excessive premolars and molars affording surfaces for the mechanical breakdown of nuts over the squirrels’ lifetime.

Except for the east-central peninsular region, collection localities for Prosciurillus murinus are scattered all through mainland Sulawesi and are additionally from Talise and Lembeh islands off the coast of the northeastern peninsula (see gazetteer and map in fig. 30). Likely the species can be encountered wherever on Sulawesi the place forest persists, even the east-central peninsula, which has been poorly surveyed for small mammals, especially squirrels. Habitat of Prosciurillus topapuensis in lower montane rain forest on Gunung Kanino, 1440 m. The massive, darker tree in the middle of the photograph is the oak Lithocarpus glutinosus. Prosciurillus murinus and Rubrisciurus rubriventer occupy this forest as does the ground squirrel Hyosciurus ileile. See table 2 for the range of ambient temperatures recorded through the sampling interval.

Specimen scores representing four population samples of Hyosciurus heinrichi projected onto the first and second principal parts extracted from principal-components evaluation. Ellipses define 95% confidence limits for scores of specimens from Gunung Nokilalaki (N, crammed circle), Gunung Kanino (K, star), Pegunungan Latimojong (L, crammed triangle), and Pegunungan Takolekaju (T, stuffed square). Three samples we studied usually are not included in the principal-components analysis. Specimens from Wawo and Masembo in lowlands of the southwestern peninsula (see gazetteer) have badly broken skulls and we measured solely the lengths of maxillary tooth rows.