Crocidura beccarii

Descriptive notes. Head — body 56 - 73 mm, tail 51 - 62 mm, ear 7 mm, hindfoot 12 - 13 mm; weight 5 - 8 g. Beccari’s White-toothed Shrew is one of the smallest shrews in Sumatra. General coloration is dark brown to black, slightly paler and tinged with chestnut below. Tail is slender, about the size of head — body length, cylindrical, and covered with hairs hiding scales; few long bristle hairs present along its basal quarter. Feet are black, unlike in other Sumatran shrews. The slightly larger Hutan White-toothed Shrew (C. hutanis) has more grayish underfur, a relatively shorter tail (c. 60 - 80 % of head-body length), longer hindfeet (more than 13 mm) and more robust dentition. Density and length of pelage probably depend on altitude, but it is usually dense and long (c. 4 mm at mid-dorsum). The similarsized Bangka White-toothed Shrew (C. vosmaeri) has shorter pelage (2 mm at mid-dorsum) and smaller feet, and lives allopatrically from Beccari’s White-toothed Shrew. The Sumatran White-toothed Shrew (C. neglecta) is also present on Sumatra butis even smaller (under 5 g). Chromosomal complement has 2 n = 38 and FN = 56 with subtelocentric X and submetacentric Y chromosomes; it is similar to that of other Crocidura from Sundaland.

Sumber: Soricidae